From colinj@hidden Mon Nov 3 20:36:06 2008 From: colinj@hidden (Colin Johnston) Date: Mon Nov 3 21:36:21 2008 Subject: samba via nfs = bad In-Reply-To: <49039C01.5040703@mansfield.co.uk> References: <126d63860810250647p5c38bf72kc700e03ba1f34982@mail.gmail.com> <27936.192.168.2.100.1224972105.squirrel@home.the-hug.net> <49039C01.5040703@mansfield.co.uk> Message-ID: and make sure you monitor the mirror status :) Colin On 25 Oct 2008, at 23:21, Paul wrote: > Paul Oldham wrote: >> Why not just slap a second disk drive of the same spec as the >> original in >> the server box (assuming there's a spare slot) and then configure the >> drives as a software RAID 1 pair? Minimal hardware cost and simple >> enough >> to do. > > agreed, > definitely the cheapest and quickest option. > possibly better thing, a hardware raid card installation, two new > drives > to create a mirror, and copying files over would be the next best > thing. > > BTW, in recent benchmarking, we found the Dell perc6 raid cards in > raid5 > gave massively higher performance than a cheap server with native > sata - > about four-fold improvement, using bonnie++ for testing, for > reading and > random I/O, and higher but not massively write speeds. > > oh, and of course, to take regular backups :-) and test them! > _______________________________________________ > CLUG mailing list > clug@cambridge-lug.org > Website: http://www.cambridge-lug.org > From paul-clug@hidden Tue Nov 4 14:52:11 2008 From: paul-clug@hidden (Paul M) Date: Tue Nov 4 15:52:25 2008 Subject: samba via nfs = bad In-Reply-To: References: <126d63860810250647p5c38bf72kc700e03ba1f34982@mail.gmail.com> <27936.192.168.2.100.1224972105.squirrel@home.the-hug.net> <49039C01.5040703@mansfield.co.uk> Message-ID: <4910619B.6020706@mansfield.co.uk> Colin Johnston wrote: > and make sure you monitor the mirror status :) this is as trivial as something like this... #!/bin/bash for S in server1 server2 ... serverN do ssh $S "cat /proc/mdstat" | grep F > /dev/null if [ $? -eq 0 ] ; then echo "Server $S has a mirror problem" | mail -s "mirror report" xyz@example.com fi done typed blindly, not debugged or tested. cron it up, watch for errors. whilst you're at it, for each disk, also do smartctl --all /dev/sda | grep Reallocated_Sector_Ct and look for numbers creeping up, it's the first sign of a failing disk IME. From tuxbox.guru@hidden Wed Nov 5 07:10:19 2008 From: tuxbox.guru@hidden (Richard) Date: Wed Nov 5 08:10:28 2008 Subject: OT best free wifi in Cambridge Re: Q: Why does my firewall hate the cambridge picturehouse? In-Reply-To: <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> References: <20081022105729.GL2994@omphalos.singularity> <0AE4ACE7-6BBC-4CAB-8602-5738FA6C8AE4@scotgate.org> <48FF1B17.7070907@gmail.com> <200810221513.30721.dom@latter.org> <48FF2EAE.6080300@gmail.com> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> Message-ID: <491146DB.5060409@gmail.com> Sam Kuper wrote: > 2008/10/22 Richard > > > Its easy to do a 20KM linkup using really inexpensive hardware. (I > have done this on 2.4Ghz and 5.8Ghz ISM hardware) using miniPCI > cards with Atheros chips. And sticking to the 100mW limits. > > I really do like the mesh thing tho.. but I am looking at a real > MAN grown up network. I am going to ask Matrix more about thier > network and how to connect using standard commodity hardware. > > > Please keep us (the list) posted. > > spk > ------------------------------------------------------------------------ > > _______________________________________________ > CLUG mailing list > clug@cambridge-lug.org > Website: http://www.cambridge-lug.org > Update: I have figured out their mail processing system.. after 2 emails to enquiries. forward:enquiries@matrix.co.uk > /dev/null It's really a disappointment for a company of this caliber to act in this manner. So I am looking at 'going it alone' as they dont seem interested in public relations. Richard From dom@hidden Wed Nov 5 16:17:18 2008 From: dom@hidden (Dom Latter) Date: Wed Nov 5 16:17:41 2008 Subject: OT best free wifi in Cambridge Re: Q: Why does my firewall hate the cambridge picturehouse? In-Reply-To: <491146DB.5060409@gmail.com> References: <20081022105729.GL2994@omphalos.singularity> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> <491146DB.5060409@gmail.com> Message-ID: <200811051617.20866.dom@latter.org> On Wednesday 05 November 2008 08:10:19 Richard wrote: [Cambridge Matrix] > I have figured out their mail processing system.. after 2 emails to > enquiries. > > forward:enquiries@matrix.co.uk > /dev/null > > It's really a disappointment for a company of this caliber to act in > this manner. So I am looking at 'going it alone' as they dont seem > interested in public relations. I've contacted Cambridge Matrix and they should by now have contacted Richard directly. Turns out that they use SORBS which unfortunately managed to misidentify Richard's email as spam. From tuxbox.guru@hidden Wed Nov 5 15:20:42 2008 From: tuxbox.guru@hidden (Richard) Date: Wed Nov 5 16:20:50 2008 Subject: Matrix In-Reply-To: <200811051617.20866.dom@latter.org> References: <20081022105729.GL2994@omphalos.singularity> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> <491146DB.5060409@gmail.com> <200811051617.20866.dom@latter.org> Message-ID: <4911B9CA.5050003@gmail.com> Dom Latter wrote: > On Wednesday 05 November 2008 08:10:19 Richard wrote: > > [Cambridge Matrix] > > >> I have figured out their mail processing system.. after 2 emails to >> enquiries. >> >> forward:enquiries@matrix.co.uk > /dev/null >> >> It's really a disappointment for a company of this caliber to act in >> this manner. So I am looking at 'going it alone' as they dont seem >> interested in public relations. >> > > I've contacted Cambridge Matrix and they should by now have contacted > Richard directly. > > Turns out that they use SORBS which unfortunately managed to misidentify > Richard's email as spam. > _______________________________________________ > CLUG mailing list > clug@cambridge-lug.org > Website: http://www.cambridge-lug.org > Thanks a million, I got an email from Graham and things have started to progress. Lets see what the future holds :-D Richard P From clug@hidden Thu Nov 6 16:22:15 2008 From: clug@hidden (Longman) Date: Thu Nov 6 17:22:37 2008 Subject: Keep two IMAP servers in Sync Message-ID: <491319B7.8010100@gasops.co.uk> What's the easiest way to have two IMAP servers with an identical set of email on each? imapsync ? rsync ? neither? Basically I'd like to have a central IMAP server accessible via the net but sadly I have to go with it being a box on the internal net (due to bandwidth and disk space reasons). This is fine for 99% of the time but if we need to move to another building (in case of fire) I'd need a duplicate box at the other location with all the email (unless I stick the box in the boot of a car which isn't a viable option!). What would be a good way of solving this kind of prob? From paul@hidden Thu Nov 6 16:46:18 2008 From: paul@hidden (Paul Oldham) Date: Thu Nov 6 17:46:18 2008 Subject: Keep two IMAP servers in Sync In-Reply-To: <491319B7.8010100@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> Message-ID: <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> On Thu, November 6, 2008 16:22, Longman said: > What's the easiest way to have two IMAP servers with an identical set of > email on each? > > imapsync ? rsync ? neither? > > Basically I'd like to have a central IMAP server accessible via the net > but sadly I have to go with it being a box on the internal net (due to > bandwidth and disk space reasons). This is fine for 99% of the time but > if we need to move to another building (in case of fire) I'd need a > duplicate box at the other location with all the email (unless I stick > the box in the boot of a car which isn't a viable option!). > > What would be a good way of solving this kind of prob? Which IMAP server are you using? For example rsync won't work so well with Cyrus if the server is running at the same time but should with Courier ... -- Paul From clug@hidden Thu Nov 6 16:52:58 2008 From: clug@hidden (Longman) Date: Thu Nov 6 17:53:07 2008 Subject: Keep two IMAP servers in Sync In-Reply-To: <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> Message-ID: <491320EA.3080600@gasops.co.uk> * Paul Oldham wrote: > Which IMAP server are you using? For example rsync won't work so well with > Cyrus if the server is running at the same time but should with Courier > ... Courier-IMAP 1.6.0 From paul@hidden Thu Nov 6 16:57:49 2008 From: paul@hidden (Paul Oldham) Date: Thu Nov 6 17:57:49 2008 Subject: Keep two IMAP servers in Sync In-Reply-To: <491320EA.3080600@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> Message-ID: <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> On Thu, November 6, 2008 16:52, Longman said: > * Paul Oldham wrote: >> Which IMAP server are you using? For example rsync won't work so well >> with Cyrus if the server is running at the same time but should with >> Courier ... > > Courier-IMAP 1.6.0 Well in that case rsync is a valid solution as Courier uses and extended version of Maildir - so it's all just files and directories, no fancy database like Cyrus. Having said that having just read the imapsync man page that seems like an equally valid solution so it probably depends what you're used to: if you already know rsync use that. But it is a bit fiddly to set up so if you're starting from scratch you might as well go for imapsync and that's probably slightly more robust. -- Paul From clug@hidden Thu Nov 6 17:01:27 2008 From: clug@hidden (Longman) Date: Thu Nov 6 18:01:35 2008 Subject: Keep two IMAP servers in Sync In-Reply-To: <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> Message-ID: <491322E7.8000000@gasops.co.uk> * Paul Oldham wrote: > On Thu, November 6, 2008 16:52, Longman said: > >> * Paul Oldham wrote: >>> Which IMAP server are you using? For example rsync won't work so well >>> with Cyrus if the server is running at the same time but should with >>> Courier ... >> Courier-IMAP 1.6.0 > > Well in that case rsync is a valid solution as Courier uses and extended > version of Maildir - so it's all just files and directories, no fancy > database like Cyrus. > > Having said that having just read the imapsync man page that seems like an > equally valid solution so it probably depends what you're used to: if you > already know rsync use that. But it is a bit fiddly to set up so if you're > starting from scratch you might as well go for imapsync and that's > probably slightly more robust. Well I already quite familiar with rsync using it extensively for various backup and transaction shipping type shenanigans -- great tool. I was more worried about what would happen if I try and rsync an active system where files are changing constantly. I can try a cron job at 4am or something but I don't want to copy any files that are in an invalid/incomplete state and end up with an unusable IMAP Maildir at the other end. From paul@hidden Thu Nov 6 17:13:25 2008 From: paul@hidden (Paul Oldham) Date: Thu Nov 6 18:13:24 2008 Subject: Keep two IMAP servers in Sync In-Reply-To: <491322E7.8000000@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> <491322E7.8000000@gasops.co.uk> Message-ID: <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> On Thu, November 6, 2008 17:01, Longman said: > * Paul Oldham wrote: > >> Well in that case rsync is a valid solution as Courier uses and extended >> version of Maildir - so it's all just files and directories, no fancy >> database like Cyrus. >> >> [...] > > I was more worried about what would happen if I try and rsync an active > system where files are changing constantly. I can try a cron job at 4am > or something but I don't want to copy any files that are in an > invalid/incomplete state and end up with an unusable IMAP Maildir at the > other end. I think the worse that could happen is that an email could be corrupted, but I'm assuming that in the even of an emergency you would have time to do a 'kill' rather than just pulling the plug, so I'm hope rsync would be pretty atomic. But if you're worried imapsync does look like it could be your friend. Funnily enough we backup a customer's Cyrus IMAP mailbase over rsync every night and, having looked at imapsync, I may now switch to using that! -- Paul From clug@hidden Fri Nov 7 13:06:01 2008 From: clug@hidden (Longman) Date: Fri Nov 7 14:06:16 2008 Subject: Keep two IMAP servers in Sync In-Reply-To: <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> <491322E7.8000000@gasops.co.uk> <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> Message-ID: <49143D39.4070509@gasops.co.uk> * Paul Oldham wrote: > But if you're worried imapsync does look like it could be your friend. > > Funnily enough we backup a customer's Cyrus IMAP mailbase over rsync every > night and, having looked at imapsync, I may now switch to using that! Shall try both and see where I get. I need to rysnc to a box that has a tape so that it gets included in an overnight backup and also to the clone IMAP server. rsync can copy two SRC directories to one DEST but I don't seem to be able to see an option to copy one SRC to two DESTs. From magnus@hidden Fri Nov 7 19:44:36 2008 From: magnus@hidden (Magnus Therning) Date: Fri Nov 7 20:44:55 2008 Subject: Keep two IMAP servers in Sync In-Reply-To: <491319B7.8010100@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> Message-ID: <49149AA4.1040704@therning.org> Longman wrote: > What's the easiest way to have two IMAP servers with an identical set of > email on each? > > imapsync ? rsync ? neither? > > Basically I'd like to have a central IMAP server accessible via the net > but sadly I have to go with it being a box on the internal net (due to > bandwidth and disk space reasons). This is fine for 99% of the time but > if we need to move to another building (in case of fire) I'd need a > duplicate box at the other location with all the email (unless I stick > the box in the boot of a car which isn't a viable option!). > > What would be a good way of solving this kind of prob? Assuming you use a maildir-based IMAP server then I'd use unison, since it offers proper two-way sync. /M -- Magnus Therning (OpenPGP: 0xAB4DFBA4) magnus?therning?org Jabber: magnus?therning?org http://therning.org/magnus Haskell is an even 'redder' pill than Lisp or Scheme. -- PaulPotts -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 197 bytes Desc: OpenPGP digital signature Url : http://lists.infowares.com/archive/clug/attachments/20081107/e1a98ea9/signature.pgp From jt@hidden Tue Nov 11 09:53:18 2008 From: jt@hidden (jt@camalyn.org) Date: Tue Nov 11 10:58:57 2008 Subject: JOB: MYSQL DBA (Zurich, Switzerland) Message-ID: <1226397198.3973.36.camel@linux-qtk6.site> JOB: Hi List, Although I know this is the Cambridge-based LUG I have had much success with finding better than good people from this list for jobs so I really hope that nobody minds this posting. ?I am working with a Swiss client that try and use only open source solutions, whenever possible. They are looking to recruit a MySQL DBA to join a team of 6 in Zurich. Flights are paid for by the client to attend the interview and relocation assistance is offered too. Although the official language spoken in Zurich is German, you truly will manage to survive speaking English as this is widely spoken in hotels, restaurants, shops and business settings. ?The scope of the DBA role is that the DBA has to take care of all the client's database systems, concerning deployment, maintenance, patching, optimisation of performance. Plus, the DBA should be to have knowledge on common daily production systems administration and integration procedures, so that they will be able to run the daily checks as well as fixing the issues that the client might encounter. Bash shell scripting is definitely a required knowledge. The clients production database handles incoming data in many different ways but as an example they'd suggest that they do 100 million write operations per working day (spread around all the production databases). ?There are a total of 273 Linux servers, of which are around 55/60 run MySQL 5.0.x community edition (se MyISAM) ?on Linux both 32 and 64 bit, typically Fedora 6/8/9, some RHEL5 and they are trying to introduce CentOS There are around 60 databases across multiple services, size changes depending on the usage (production systems DB are around 200-250 MB each per day, archive data DB much bigger. The client's existing challenges/ most pressing issues relate to high volume transactions and replication. If anyone is interested in discussing with me further please contact me off-list. My e-mail address is james@camalyn.org All the best, JAMES From onepoint@hidden Thu Nov 13 11:13:02 2008 From: onepoint@hidden (Jeremy Henty) Date: Thu Nov 13 12:13:12 2008 Subject: For free: 2 PS2 keyboards Message-ID: <20081113111302.GI2975@omphalos.singularity> This is probably coals to Newcastle, but I've got two PS2 keyboards going free to anyone who wants them. Both well-used but serviceable. One Logitech, one Trust Power Plus, both UK layout, full-size 100+ keys. Pick up from Bateman Street (or any convenient pub). Cheers, Jeremy Henty From jt@hidden Thu Nov 13 16:43:34 2008 From: jt@hidden (jt@camalyn.org) Date: Thu Nov 13 17:44:41 2008 Subject: JOB: Unix/ Linux Systems Admin to support existing MySQL DBA Message-ID: <1226594614.5417.75.camel@linux-qtk6.site> Hi, I'm working with a client in Cambridge who is looking to recruit a permanent Unix/ Linux Systems admin to support the existing MySQL DBA. For more information please contact me off-list to discuss further. Thanks JAMES mailto: james@camalyn.org From marcus@hidden Tue Nov 18 09:16:19 2008 From: marcus@hidden (Marcus Williams) Date: Tue Nov 18 10:16:37 2008 Subject: KVM over IP or similar solutions Message-ID: <1226999267-sup-8445@stampy> Hi - Anyone know of any cheap kvm over ip solutions? Basically I've got a noname 1U rack from DNUK and need BIOS access :) Unfortunately its in a server room somewhere in Studley and my only access at the moment is ssh :( I was thinking of getting a kvm over ip card until I saw the price of them and then I remembered the remote insight boards for compaqs which are stupidly cheap on ebay. Any one know if these work in any rack or do they need to be attached to a compaq? Other solns welcome... Thanks Marcus From jt@hidden Tue Nov 18 11:05:40 2008 From: jt@hidden (jt@camalyn.org) Date: Tue Nov 18 12:06:48 2008 Subject: JOB: DBA/ *Nix Sysadmin - CAMBRIDGE In-Reply-To: <1226594614.5417.75.camel@linux-qtk6.site> References: <1226594614.5417.75.camel@linux-qtk6.site> Message-ID: <1227006340.4957.42.camel@linux-qtk6.site> hi List, ?Following on from the "very" short post below, our Cambridge-based client, is looking to hire a DBA/ *nix sysadmin type person - to form part of a multi-skilled sysadmin team who's main focus is to be involved and take responsibility for all aspects of the client's production environment. This is a position that requires someone to pick up and run with a number of tasks and be able to change from one operating environment to another quickly. This is a role that would definitely suit a workaholic. Ideally we are looking for a very intelligent and passionate sysadmin, someone who's specialities may include: Open Source Software, FreeBSD, Solaris and MySQL. ?It would be ideal if the sysadmin had development experience with several languages, such as Python, Java, Perl and PHP and in their spare time may even contribute to open source projects. The sysadmin should be competent with most Linux distributions, especially Ubuntu, Debian and RedHat. ?BSD or Solaris skills would be a plus. Networking and firewall understanding, especially Cisco and/or BSD-PacketFilter. Zeus or other layer7 application proxies/load balancers desirable. Configuring and tuning Apache, NFS and file-system replication. To discuss further please e-mail me at james@camalyn.org Kind regards JAMES >> to learn more about Camalyn please visit http://www.camalyn.org On Thu, 2008-11-13 at 16:43 +0000, jt@camalyn.org wrote: > Hi, > > I'm working with a client in Cambridge who is looking to recruit a > permanent Unix/ Linux Systems admin to support the existing MySQL DBA. > For more information please contact me off-list to discuss further. > > Thanks JAMES > > mailto: james@camalyn.org > > From paul-clug@hidden Tue Nov 18 11:56:46 2008 From: paul-clug@hidden (Paul M) Date: Tue Nov 18 12:56:59 2008 Subject: KVM over IP or similar solutions In-Reply-To: <1226999267-sup-8445@stampy> References: <1226999267-sup-8445@stampy> Message-ID: <4922AD7E.7030202@mansfield.co.uk> Marcus Williams wrote: > Anyone know of any cheap kvm over ip solutions? Basically I've got a > noname 1U rack from DNUK and need BIOS access :) Unfortunately its in > a server room somewhere in Studley and my only access at the moment is > ssh :( we have a couple of belkin ones, it takes modules which connect to the base unit over cat5 cables (not ethernet), offers usb and ps/2 modules. you can buy the modules in bundles which keeps the cost down. still not too cheap though. only snag is that they only work using activeX in windows. I'd advise staying clear of startech KVMs, ours have been a major PITA. having been through pain with various different cheap boxes with poor or no remote management card, recently eval'd HP's DL180 and found it lacking, we're going to be sticking with Dell. The DRAC5 cards (with latest firmware) can be remote managed using firefox3 and linux, 'cos the ip kvm viewer is a java app. From clug@hidden Tue Nov 25 10:47:28 2008 From: clug@hidden (Longman) Date: Tue Nov 25 11:45:34 2008 Subject: Linux Firewalling Message-ID: <492BD7C0.7020604@gasops.co.uk> Whenever I use a Linux box for a firewall I always run out of NIC space in the box itself. What do others do in these situations? Can you buy purpose built boxes with, say, room for 20 cards? From gareth.pullen@hidden Tue Nov 25 10:53:02 2008 From: gareth.pullen@hidden (Gareth Pullen) Date: Tue Nov 25 11:53:07 2008 Subject: Linux Firewalling In-Reply-To: <492BD7C0.7020604@gasops.co.uk> References: <492BD7C0.7020604@gasops.co.uk> Message-ID: If you can find somewhere which sells them, there's always things like this: http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ A bit pricey if you can find some (~$100 each from what I've seen). Gareth 2008/11/25 Longman : > > Whenever I use a Linux box for a firewall I always run out of NIC space > in the box itself. What do others do in these situations? Can you buy > purpose built boxes with, say, room for 20 cards? > _______________________________________________ > CLUG mailing list > clug@cambridge-lug.org > Website: http://www.cambridge-lug.org > From gareth.pullen@hidden Tue Nov 25 10:56:01 2008 From: gareth.pullen@hidden (Gareth Pullen) Date: Tue Nov 25 11:56:06 2008 Subject: Linux Firewalling In-Reply-To: References: <492BD7C0.7020604@gasops.co.uk> Message-ID: 2008/11/25 Gareth Pullen : > If you can find somewhere which sells them, there's always things like this: > http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ > A bit pricey if you can find some (~$100 each from what I've seen). > > Gareth Edit: The one linked above appears to present 1 NIC to the host OS, rather than the 4 ports. There are ones which present all 4 ports as individual NIC's to the host OS... Gareth From will.pink@hidden Tue Nov 25 11:03:20 2008 From: will.pink@hidden (william pink) Date: Tue Nov 25 12:03:29 2008 Subject: Linux Firewalling In-Reply-To: References: <492BD7C0.7020604@gasops.co.uk> Message-ID: <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> I use virtual interfaces for my firewalls I am intrigued on why you need physical NIC's? Will On 11/25/08, Gareth Pullen wrote: > 2008/11/25 Gareth Pullen : >> If you can find somewhere which sells them, there's always things like >> this: >> http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ >> A bit pricey if you can find some (~$100 each from what I've seen). >> >> Gareth > > Edit: > The one linked above appears to present 1 NIC to the host OS, rather > than the 4 ports. There are ones which present all 4 ports as > individual NIC's to the host OS... > > Gareth > _______________________________________________ > CLUG mailing list > clug@cambridge-lug.org > Website: http://www.cambridge-lug.org > From clug@hidden Tue Nov 25 11:15:28 2008 From: clug@hidden (Longman) Date: Tue Nov 25 12:13:32 2008 Subject: Linux Firewalling In-Reply-To: <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> Message-ID: <492BDE50.9000007@gasops.co.uk> * william pink wrote: > I use virtual interfaces for my firewalls I am intrigued on why you > need physical NIC's? I use IP aliasing for configuring more than one IP on the same network on one NIC but I've never done this where I need to connect to lots of different networks - only where I've wanted to run different services on different IPs but not use DNAT. If you need to connect NIC 192.168.1.1 to router 192.168.1.2 and NIC 192.168.4.1 to router 192.168.4.2 are you saying rather than connecting them directly you use IP aliasing and a hub? How do I physically connect the routers 192.168.1.2 and 192.168.4.2 to my firewall if I'm using virtual addresses? From will.pink@hidden Tue Nov 25 11:29:38 2008 From: will.pink@hidden (william pink) Date: Tue Nov 25 12:29:44 2008 Subject: Linux Firewalling In-Reply-To: <492BDE50.9000007@gasops.co.uk> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> Message-ID: <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> Apologies I have only done it like you say but with different WAN IP's addresses, I wouldn't of thought what you want to do is possible with virtual interfaces but my knowledge of routing isn't great so I wouldn't assume it isn't possible. Will On 11/25/08, Longman wrote: > * william pink wrote: >> I use virtual interfaces for my firewalls I am intrigued on why you >> need physical NIC's? > > I use IP aliasing for configuring more than one IP on the same network > on one NIC but I've never done this where I need to connect to lots of > different networks - only where I've wanted to run different services on > different IPs but not use DNAT. If you need to connect NIC 192.168.1.1 > to router 192.168.1.2 and NIC 192.168.4.1 to router 192.168.4.2 are you > saying rather than connecting them directly you use IP aliasing and a hub? > > How do I physically connect the routers 192.168.1.2 and 192.168.4.2 to > my firewall if I'm using virtual addresses? > _______________________________________________ > CLUG mailing list > clug@cambridge-lug.org > Website: http://www.cambridge-lug.org > From paul-clug@hidden Tue Nov 25 15:46:03 2008 From: paul-clug@hidden (Paul M) Date: Tue Nov 25 16:46:14 2008 Subject: Linux Firewalling In-Reply-To: <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> Message-ID: <492C1DBB.8090002@mansfield.co.uk> get yourself a .1q & VLAN capable switch*, install the vlan package on the machine, encapsulate in .1q. put the unfirewalled wan on (say) vlan666, make the lan vlan2 (don't use default vlan, 1), dmz on say vlan3, etc. ensure you disable auto-negotiation of switch port encapsulation otherwise DMZ hosts could in theory break your security and tap into every vlan. unless you really are pumping gigabits through your firewall, a single good quality giga nic will pretty much handle it all. * cisco 35xx switch has excellent management functions, you can point cacti at it and monitor switch port usage. procurve switches also good, probably cheaper and use less power. some linksys switches might achieve this. avoid dlink or netgear, their so-called managed switches are awful. the Dell-branded Huawei are loved by a few, hated by many. From clug@hidden Tue Nov 25 15:55:32 2008 From: clug@hidden (Longman) Date: Tue Nov 25 16:53:35 2008 Subject: Linux Firewalling In-Reply-To: <492C1DBB.8090002@mansfield.co.uk> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> <492C1DBB.8090002@mansfield.co.uk> Message-ID: <492C1FF4.1060106@gasops.co.uk> * Paul M wrote: > get yourself a .1q & VLAN capable switch*, install the vlan package on > the machine, encapsulate in .1q. put the unfirewalled wan on (say) Completely lost me there. I think it's RTFM time... :) From jt@hidden Tue Nov 25 19:23:12 2008 From: jt@hidden (jt@camalyn.org) Date: Tue Nov 25 20:24:27 2008 Subject: job: web designer [Cambridge] Message-ID: <1227640992.9813.41.camel@linux-qtk6.site> hi everyone, I am hoping that a CLUG member may be able to help as I'm looking for a web designer comfortable with working in a Unix environment for a permanent job in Cambridge. The web designer should have at least a couple of years experience and be confident and capable of working with stylesheets, javascript and xml (think "ajax"). Ideally an on-line portfolio would be useful. Salary is negotiable as always. Kind regards James ________ James @ Camalyn ++44 (0) 7952 145 127 - mobile to learn more about Camalyn please visit http://www.camalyn.org From paul-clug@hidden Wed Nov 26 10:45:03 2008 From: paul-clug@hidden (Paul M) Date: Wed Nov 26 11:45:16 2008 Subject: datacentres in Cambridgeshire? Message-ID: <492D28AF.9010609@mansfield.co.uk> I know of two companies who provide this service, Telstra and Redstone. Both are pretty much full. I was wondering if anyone knew of any plans for any other companies who are setting up in this arena, or who do it but I didn't know about them? Or, is there anyone who has a proper computer room who'd has about four racks spare and would be interesting in renting then out? Conversely, we are considering kitting out one of our offices with a professional-grade UPS etc, and would end up with spare room; would anyone be interested? It doesn't have to be Cambridge, but somewhere close-ish idea (a circle 30m radius-ish). The closest I can see is the upcoming BlueSquare in Milton Keynes. Paul From paul@hidden Wed Nov 26 10:57:01 2008 From: paul@hidden (Paul Oldham) Date: Wed Nov 26 11:57:07 2008 Subject: datacentres in Cambridgeshire? In-Reply-To: <492D28AF.9010609@mansfield.co.uk> References: <492D28AF.9010609@mansfield.co.uk> Message-ID: <492D2B7D.6080900@the-hug.org> On 26/11/08 10:45, Paul M wrote: > I know of two companies who provide this service, Telstra and Redstone. > Both are pretty much full. > > I was wondering if anyone knew of any plans for any other companies who > are setting up in this arena, or who do it but I didn't know about them? > > Or, is there anyone who has a proper computer room who'd has about four > racks spare and would be interesting in renting then out? Conversely, we > are considering kitting out one of our offices with a professional-grade > UPS etc, and would end up with spare room; would anyone be interested? > > It doesn't have to be Cambridge, but somewhere close-ish idea (a circle > 30m radius-ish). The closest I can see is the upcoming BlueSquare in > Milton Keynes. Merula at Huntingdon have their own data centre -- Paul From colinj at mx5.org.uk Mon Nov 3 21:36:06 2008 From: colinj at mx5.org.uk (Colin Johnston) Date: Mon, 3 Nov 2008 20:36:06 +0000 Subject: samba via nfs = bad In-Reply-To: <49039C01.5040703@mansfield.co.uk> References: <126d63860810250647p5c38bf72kc700e03ba1f34982@mail.gmail.com> <27936.192.168.2.100.1224972105.squirrel@home.the-hug.net> <49039C01.5040703@mansfield.co.uk> Message-ID: and make sure you monitor the mirror status :) Colin On 25 Oct 2008, at 23:21, Paul wrote: > Paul Oldham wrote: >> Why not just slap a second disk drive of the same spec as the >> original in >> the server box (assuming there's a spare slot) and then configure the >> drives as a software RAID 1 pair? Minimal hardware cost and simple >> enough >> to do. > > agreed, > definitely the cheapest and quickest option. > possibly better thing, a hardware raid card installation, two new > drives > to create a mirror, and copying files over would be the next best > thing. > > BTW, in recent benchmarking, we found the Dell perc6 raid cards in > raid5 > gave massively higher performance than a cheap server with native > sata - > about four-fold improvement, using bonnie++ for testing, for > reading and > random I/O, and higher but not massively write speeds. > > oh, and of course, to take regular backups :-) and test them! > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > From paul-clug at mansfield.co.uk Tue Nov 4 15:52:11 2008 From: paul-clug at mansfield.co.uk (Paul M) Date: Tue, 04 Nov 2008 14:52:11 +0000 Subject: samba via nfs = bad In-Reply-To: References: <126d63860810250647p5c38bf72kc700e03ba1f34982@mail.gmail.com> <27936.192.168.2.100.1224972105.squirrel@home.the-hug.net> <49039C01.5040703@mansfield.co.uk> Message-ID: <4910619B.6020706@mansfield.co.uk> Colin Johnston wrote: > and make sure you monitor the mirror status :) this is as trivial as something like this... #!/bin/bash for S in server1 server2 ... serverN do ssh $S "cat /proc/mdstat" | grep F > /dev/null if [ $? -eq 0 ] ; then echo "Server $S has a mirror problem" | mail -s "mirror report" xyz at example.com fi done typed blindly, not debugged or tested. cron it up, watch for errors. whilst you're at it, for each disk, also do smartctl --all /dev/sda | grep Reallocated_Sector_Ct and look for numbers creeping up, it's the first sign of a failing disk IME. From tuxbox.guru at gmail.com Wed Nov 5 08:10:19 2008 From: tuxbox.guru at gmail.com (Richard) Date: Wed, 05 Nov 2008 07:10:19 +0000 Subject: OT best free wifi in Cambridge Re: Q: Why does my firewall hate the cambridge picturehouse? In-Reply-To: <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> References: <20081022105729.GL2994@omphalos.singularity> <0AE4ACE7-6BBC-4CAB-8602-5738FA6C8AE4@scotgate.org> <48FF1B17.7070907@gmail.com> <200810221513.30721.dom@latter.org> <48FF2EAE.6080300@gmail.com> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> Message-ID: <491146DB.5060409@gmail.com> Sam Kuper wrote: > 2008/10/22 Richard > > > Its easy to do a 20KM linkup using really inexpensive hardware. (I > have done this on 2.4Ghz and 5.8Ghz ISM hardware) using miniPCI > cards with Atheros chips. And sticking to the 100mW limits. > > I really do like the mesh thing tho.. but I am looking at a real > MAN grown up network. I am going to ask Matrix more about thier > network and how to connect using standard commodity hardware. > > > Please keep us (the list) posted. > > spk > ------------------------------------------------------------------------ > > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > Update: I have figured out their mail processing system.. after 2 emails to enquiries. forward:enquiries at matrix.co.uk > /dev/null It's really a disappointment for a company of this caliber to act in this manner. So I am looking at 'going it alone' as they dont seem interested in public relations. Richard From dom at latter.org Wed Nov 5 16:17:18 2008 From: dom at latter.org (Dom Latter) Date: Wed, 5 Nov 2008 16:17:18 +0100 Subject: OT best free wifi in Cambridge Re: Q: Why does my firewall hate the cambridge picturehouse? In-Reply-To: <491146DB.5060409@gmail.com> References: <20081022105729.GL2994@omphalos.singularity> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> <491146DB.5060409@gmail.com> Message-ID: <200811051617.20866.dom@latter.org> On Wednesday 05 November 2008 08:10:19 Richard wrote: [Cambridge Matrix] > I have figured out their mail processing system.. after 2 emails to > enquiries. > > forward:enquiries at matrix.co.uk > /dev/null > > It's really a disappointment for a company of this caliber to act in > this manner. So I am looking at 'going it alone' as they dont seem > interested in public relations. I've contacted Cambridge Matrix and they should by now have contacted Richard directly. Turns out that they use SORBS which unfortunately managed to misidentify Richard's email as spam. From tuxbox.guru at gmail.com Wed Nov 5 16:20:42 2008 From: tuxbox.guru at gmail.com (Richard) Date: Wed, 05 Nov 2008 15:20:42 +0000 Subject: Matrix In-Reply-To: <200811051617.20866.dom@latter.org> References: <20081022105729.GL2994@omphalos.singularity> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> <491146DB.5060409@gmail.com> <200811051617.20866.dom@latter.org> Message-ID: <4911B9CA.5050003@gmail.com> Dom Latter wrote: > On Wednesday 05 November 2008 08:10:19 Richard wrote: > > [Cambridge Matrix] > > >> I have figured out their mail processing system.. after 2 emails to >> enquiries. >> >> forward:enquiries at matrix.co.uk > /dev/null >> >> It's really a disappointment for a company of this caliber to act in >> this manner. So I am looking at 'going it alone' as they dont seem >> interested in public relations. >> > > I've contacted Cambridge Matrix and they should by now have contacted > Richard directly. > > Turns out that they use SORBS which unfortunately managed to misidentify > Richard's email as spam. > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > Thanks a million, I got an email from Graham and things have started to progress. Lets see what the future holds :-D Richard P From clug at gasops.co.uk Thu Nov 6 17:22:15 2008 From: clug at gasops.co.uk (Longman) Date: Thu, 06 Nov 2008 16:22:15 +0000 Subject: Keep two IMAP servers in Sync Message-ID: <491319B7.8010100@gasops.co.uk> What's the easiest way to have two IMAP servers with an identical set of email on each? imapsync ? rsync ? neither? Basically I'd like to have a central IMAP server accessible via the net but sadly I have to go with it being a box on the internal net (due to bandwidth and disk space reasons). This is fine for 99% of the time but if we need to move to another building (in case of fire) I'd need a duplicate box at the other location with all the email (unless I stick the box in the boot of a car which isn't a viable option!). What would be a good way of solving this kind of prob? From paul at the-hug.org Thu Nov 6 17:46:18 2008 From: paul at the-hug.org (Paul Oldham) Date: Thu, 6 Nov 2008 16:46:18 -0000 (UTC) Subject: Keep two IMAP servers in Sync In-Reply-To: <491319B7.8010100@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> Message-ID: <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> On Thu, November 6, 2008 16:22, Longman said: > What's the easiest way to have two IMAP servers with an identical set of > email on each? > > imapsync ? rsync ? neither? > > Basically I'd like to have a central IMAP server accessible via the net > but sadly I have to go with it being a box on the internal net (due to > bandwidth and disk space reasons). This is fine for 99% of the time but > if we need to move to another building (in case of fire) I'd need a > duplicate box at the other location with all the email (unless I stick > the box in the boot of a car which isn't a viable option!). > > What would be a good way of solving this kind of prob? Which IMAP server are you using? For example rsync won't work so well with Cyrus if the server is running at the same time but should with Courier ... -- Paul From clug at gasops.co.uk Thu Nov 6 17:52:58 2008 From: clug at gasops.co.uk (Longman) Date: Thu, 06 Nov 2008 16:52:58 +0000 Subject: Keep two IMAP servers in Sync In-Reply-To: <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> Message-ID: <491320EA.3080600@gasops.co.uk> * Paul Oldham wrote: > Which IMAP server are you using? For example rsync won't work so well with > Cyrus if the server is running at the same time but should with Courier > ... Courier-IMAP 1.6.0 From paul at the-hug.org Thu Nov 6 17:57:49 2008 From: paul at the-hug.org (Paul Oldham) Date: Thu, 6 Nov 2008 16:57:49 -0000 (UTC) Subject: Keep two IMAP servers in Sync In-Reply-To: <491320EA.3080600@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> Message-ID: <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> On Thu, November 6, 2008 16:52, Longman said: > * Paul Oldham wrote: >> Which IMAP server are you using? For example rsync won't work so well >> with Cyrus if the server is running at the same time but should with >> Courier ... > > Courier-IMAP 1.6.0 Well in that case rsync is a valid solution as Courier uses and extended version of Maildir - so it's all just files and directories, no fancy database like Cyrus. Having said that having just read the imapsync man page that seems like an equally valid solution so it probably depends what you're used to: if you already know rsync use that. But it is a bit fiddly to set up so if you're starting from scratch you might as well go for imapsync and that's probably slightly more robust. -- Paul From clug at gasops.co.uk Thu Nov 6 18:01:27 2008 From: clug at gasops.co.uk (Longman) Date: Thu, 06 Nov 2008 17:01:27 +0000 Subject: Keep two IMAP servers in Sync In-Reply-To: <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> Message-ID: <491322E7.8000000@gasops.co.uk> * Paul Oldham wrote: > On Thu, November 6, 2008 16:52, Longman said: > >> * Paul Oldham wrote: >>> Which IMAP server are you using? For example rsync won't work so well >>> with Cyrus if the server is running at the same time but should with >>> Courier ... >> Courier-IMAP 1.6.0 > > Well in that case rsync is a valid solution as Courier uses and extended > version of Maildir - so it's all just files and directories, no fancy > database like Cyrus. > > Having said that having just read the imapsync man page that seems like an > equally valid solution so it probably depends what you're used to: if you > already know rsync use that. But it is a bit fiddly to set up so if you're > starting from scratch you might as well go for imapsync and that's > probably slightly more robust. Well I already quite familiar with rsync using it extensively for various backup and transaction shipping type shenanigans -- great tool. I was more worried about what would happen if I try and rsync an active system where files are changing constantly. I can try a cron job at 4am or something but I don't want to copy any files that are in an invalid/incomplete state and end up with an unusable IMAP Maildir at the other end. From paul at the-hug.org Thu Nov 6 18:13:25 2008 From: paul at the-hug.org (Paul Oldham) Date: Thu, 6 Nov 2008 17:13:25 -0000 (UTC) Subject: Keep two IMAP servers in Sync In-Reply-To: <491322E7.8000000@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> <491322E7.8000000@gasops.co.uk> Message-ID: <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> On Thu, November 6, 2008 17:01, Longman said: > * Paul Oldham wrote: > >> Well in that case rsync is a valid solution as Courier uses and extended >> version of Maildir - so it's all just files and directories, no fancy >> database like Cyrus. >> >> [...] > > I was more worried about what would happen if I try and rsync an active > system where files are changing constantly. I can try a cron job at 4am > or something but I don't want to copy any files that are in an > invalid/incomplete state and end up with an unusable IMAP Maildir at the > other end. I think the worse that could happen is that an email could be corrupted, but I'm assuming that in the even of an emergency you would have time to do a 'kill' rather than just pulling the plug, so I'm hope rsync would be pretty atomic. But if you're worried imapsync does look like it could be your friend. Funnily enough we backup a customer's Cyrus IMAP mailbase over rsync every night and, having looked at imapsync, I may now switch to using that! -- Paul From clug at gasops.co.uk Fri Nov 7 14:06:01 2008 From: clug at gasops.co.uk (Longman) Date: Fri, 07 Nov 2008 13:06:01 +0000 Subject: Keep two IMAP servers in Sync In-Reply-To: <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> <491322E7.8000000@gasops.co.uk> <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> Message-ID: <49143D39.4070509@gasops.co.uk> * Paul Oldham wrote: > But if you're worried imapsync does look like it could be your friend. > > Funnily enough we backup a customer's Cyrus IMAP mailbase over rsync every > night and, having looked at imapsync, I may now switch to using that! Shall try both and see where I get. I need to rysnc to a box that has a tape so that it gets included in an overnight backup and also to the clone IMAP server. rsync can copy two SRC directories to one DEST but I don't seem to be able to see an option to copy one SRC to two DESTs. From magnus at therning.org Fri Nov 7 20:44:36 2008 From: magnus at therning.org (Magnus Therning) Date: Fri, 07 Nov 2008 19:44:36 +0000 Subject: Keep two IMAP servers in Sync In-Reply-To: <491319B7.8010100@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> Message-ID: <49149AA4.1040704@therning.org> Longman wrote: > What's the easiest way to have two IMAP servers with an identical set of > email on each? > > imapsync ? rsync ? neither? > > Basically I'd like to have a central IMAP server accessible via the net > but sadly I have to go with it being a box on the internal net (due to > bandwidth and disk space reasons). This is fine for 99% of the time but > if we need to move to another building (in case of fire) I'd need a > duplicate box at the other location with all the email (unless I stick > the box in the boot of a car which isn't a viable option!). > > What would be a good way of solving this kind of prob? Assuming you use a maildir-based IMAP server then I'd use unison, since it offers proper two-way sync. /M -- Magnus Therning (OpenPGP: 0xAB4DFBA4) magnus?therning?org Jabber: magnus?therning?org http://therning.org/magnus Haskell is an even 'redder' pill than Lisp or Scheme. -- PaulPotts -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 197 bytes Desc: OpenPGP digital signature Url : http://lists.infowares.com/archive/clug/attachments/20081107/e1a98ea9/attachment.pgp From jt at camalyn.org Tue Nov 11 10:53:18 2008 From: jt at camalyn.org (jt at camalyn.org) Date: Tue, 11 Nov 2008 09:53:18 +0000 Subject: JOB: MYSQL DBA (Zurich, Switzerland) Message-ID: <1226397198.3973.36.camel@linux-qtk6.site> JOB: Hi List, Although I know this is the Cambridge-based LUG I have had much success with finding better than good people from this list for jobs so I really hope that nobody minds this posting. ?I am working with a Swiss client that try and use only open source solutions, whenever possible. They are looking to recruit a MySQL DBA to join a team of 6 in Zurich. Flights are paid for by the client to attend the interview and relocation assistance is offered too. Although the official language spoken in Zurich is German, you truly will manage to survive speaking English as this is widely spoken in hotels, restaurants, shops and business settings. ?The scope of the DBA role is that the DBA has to take care of all the client's database systems, concerning deployment, maintenance, patching, optimisation of performance. Plus, the DBA should be to have knowledge on common daily production systems administration and integration procedures, so that they will be able to run the daily checks as well as fixing the issues that the client might encounter. Bash shell scripting is definitely a required knowledge. The clients production database handles incoming data in many different ways but as an example they'd suggest that they do 100 million write operations per working day (spread around all the production databases). ?There are a total of 273 Linux servers, of which are around 55/60 run MySQL 5.0.x community edition (se MyISAM) ?on Linux both 32 and 64 bit, typically Fedora 6/8/9, some RHEL5 and they are trying to introduce CentOS There are around 60 databases across multiple services, size changes depending on the usage (production systems DB are around 200-250 MB each per day, archive data DB much bigger. The client's existing challenges/ most pressing issues relate to high volume transactions and replication. If anyone is interested in discussing with me further please contact me off-list. My e-mail address is james at camalyn.org All the best, JAMES From onepoint at starurchin.org Thu Nov 13 12:13:02 2008 From: onepoint at starurchin.org (Jeremy Henty) Date: Thu, 13 Nov 2008 11:13:02 +0000 Subject: For free: 2 PS2 keyboards Message-ID: <20081113111302.GI2975@omphalos.singularity> This is probably coals to Newcastle, but I've got two PS2 keyboards going free to anyone who wants them. Both well-used but serviceable. One Logitech, one Trust Power Plus, both UK layout, full-size 100+ keys. Pick up from Bateman Street (or any convenient pub). Cheers, Jeremy Henty From jt at camalyn.org Thu Nov 13 17:43:34 2008 From: jt at camalyn.org (jt at camalyn.org) Date: Thu, 13 Nov 2008 16:43:34 +0000 Subject: JOB: Unix/ Linux Systems Admin to support existing MySQL DBA Message-ID: <1226594614.5417.75.camel@linux-qtk6.site> Hi, I'm working with a client in Cambridge who is looking to recruit a permanent Unix/ Linux Systems admin to support the existing MySQL DBA. For more information please contact me off-list to discuss further. Thanks JAMES mailto: james at camalyn.org From marcus at quintic.co.uk Tue Nov 18 10:16:19 2008 From: marcus at quintic.co.uk (Marcus Williams) Date: Tue, 18 Nov 2008 09:16:19 +0000 Subject: KVM over IP or similar solutions Message-ID: <1226999267-sup-8445@stampy> Hi - Anyone know of any cheap kvm over ip solutions? Basically I've got a noname 1U rack from DNUK and need BIOS access :) Unfortunately its in a server room somewhere in Studley and my only access at the moment is ssh :( I was thinking of getting a kvm over ip card until I saw the price of them and then I remembered the remote insight boards for compaqs which are stupidly cheap on ebay. Any one know if these work in any rack or do they need to be attached to a compaq? Other solns welcome... Thanks Marcus From jt at camalyn.org Tue Nov 18 12:05:40 2008 From: jt at camalyn.org (jt at camalyn.org) Date: Tue, 18 Nov 2008 11:05:40 +0000 Subject: JOB: DBA/ *Nix Sysadmin - CAMBRIDGE In-Reply-To: <1226594614.5417.75.camel@linux-qtk6.site> References: <1226594614.5417.75.camel@linux-qtk6.site> Message-ID: <1227006340.4957.42.camel@linux-qtk6.site> hi List, ?Following on from the "very" short post below, our Cambridge-based client, is looking to hire a DBA/ *nix sysadmin type person - to form part of a multi-skilled sysadmin team who's main focus is to be involved and take responsibility for all aspects of the client's production environment. This is a position that requires someone to pick up and run with a number of tasks and be able to change from one operating environment to another quickly. This is a role that would definitely suit a workaholic. Ideally we are looking for a very intelligent and passionate sysadmin, someone who's specialities may include: Open Source Software, FreeBSD, Solaris and MySQL. ?It would be ideal if the sysadmin had development experience with several languages, such as Python, Java, Perl and PHP and in their spare time may even contribute to open source projects. The sysadmin should be competent with most Linux distributions, especially Ubuntu, Debian and RedHat. ?BSD or Solaris skills would be a plus. Networking and firewall understanding, especially Cisco and/or BSD-PacketFilter. Zeus or other layer7 application proxies/load balancers desirable. Configuring and tuning Apache, NFS and file-system replication. To discuss further please e-mail me at james at camalyn.org Kind regards JAMES >> to learn more about Camalyn please visit http://www.camalyn.org On Thu, 2008-11-13 at 16:43 +0000, jt at camalyn.org wrote: > Hi, > > I'm working with a client in Cambridge who is looking to recruit a > permanent Unix/ Linux Systems admin to support the existing MySQL DBA. > For more information please contact me off-list to discuss further. > > Thanks JAMES > > mailto: james at camalyn.org > > From paul-clug at mansfield.co.uk Tue Nov 18 12:56:46 2008 From: paul-clug at mansfield.co.uk (Paul M) Date: Tue, 18 Nov 2008 11:56:46 +0000 Subject: KVM over IP or similar solutions In-Reply-To: <1226999267-sup-8445@stampy> References: <1226999267-sup-8445@stampy> Message-ID: <4922AD7E.7030202@mansfield.co.uk> Marcus Williams wrote: > Anyone know of any cheap kvm over ip solutions? Basically I've got a > noname 1U rack from DNUK and need BIOS access :) Unfortunately its in > a server room somewhere in Studley and my only access at the moment is > ssh :( we have a couple of belkin ones, it takes modules which connect to the base unit over cat5 cables (not ethernet), offers usb and ps/2 modules. you can buy the modules in bundles which keeps the cost down. still not too cheap though. only snag is that they only work using activeX in windows. I'd advise staying clear of startech KVMs, ours have been a major PITA. having been through pain with various different cheap boxes with poor or no remote management card, recently eval'd HP's DL180 and found it lacking, we're going to be sticking with Dell. The DRAC5 cards (with latest firmware) can be remote managed using firefox3 and linux, 'cos the ip kvm viewer is a java app. From clug at gasops.co.uk Tue Nov 25 11:47:28 2008 From: clug at gasops.co.uk (Longman) Date: Tue, 25 Nov 2008 10:47:28 +0000 Subject: Linux Firewalling Message-ID: <492BD7C0.7020604@gasops.co.uk> Whenever I use a Linux box for a firewall I always run out of NIC space in the box itself. What do others do in these situations? Can you buy purpose built boxes with, say, room for 20 cards? From gareth.pullen at gmail.com Tue Nov 25 11:53:02 2008 From: gareth.pullen at gmail.com (Gareth Pullen) Date: Tue, 25 Nov 2008 10:53:02 +0000 Subject: Linux Firewalling In-Reply-To: <492BD7C0.7020604@gasops.co.uk> References: <492BD7C0.7020604@gasops.co.uk> Message-ID: If you can find somewhere which sells them, there's always things like this: http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ A bit pricey if you can find some (~$100 each from what I've seen). Gareth 2008/11/25 Longman : > > Whenever I use a Linux box for a firewall I always run out of NIC space > in the box itself. What do others do in these situations? Can you buy > purpose built boxes with, say, room for 20 cards? > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > From gareth.pullen at gmail.com Tue Nov 25 11:56:01 2008 From: gareth.pullen at gmail.com (Gareth Pullen) Date: Tue, 25 Nov 2008 10:56:01 +0000 Subject: Linux Firewalling In-Reply-To: References: <492BD7C0.7020604@gasops.co.uk> Message-ID: 2008/11/25 Gareth Pullen : > If you can find somewhere which sells them, there's always things like this: > http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ > A bit pricey if you can find some (~$100 each from what I've seen). > > Gareth Edit: The one linked above appears to present 1 NIC to the host OS, rather than the 4 ports. There are ones which present all 4 ports as individual NIC's to the host OS... Gareth From will.pink at gmail.com Tue Nov 25 12:03:20 2008 From: will.pink at gmail.com (william pink) Date: Tue, 25 Nov 2008 11:03:20 +0000 Subject: Linux Firewalling In-Reply-To: References: <492BD7C0.7020604@gasops.co.uk> Message-ID: <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> I use virtual interfaces for my firewalls I am intrigued on why you need physical NIC's? Will On 11/25/08, Gareth Pullen wrote: > 2008/11/25 Gareth Pullen : >> If you can find somewhere which sells them, there's always things like >> this: >> http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ >> A bit pricey if you can find some (~$100 each from what I've seen). >> >> Gareth > > Edit: > The one linked above appears to present 1 NIC to the host OS, rather > than the 4 ports. There are ones which present all 4 ports as > individual NIC's to the host OS... > > Gareth > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > From clug at gasops.co.uk Tue Nov 25 12:15:28 2008 From: clug at gasops.co.uk (Longman) Date: Tue, 25 Nov 2008 11:15:28 +0000 Subject: Linux Firewalling In-Reply-To: <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> Message-ID: <492BDE50.9000007@gasops.co.uk> * william pink wrote: > I use virtual interfaces for my firewalls I am intrigued on why you > need physical NIC's? I use IP aliasing for configuring more than one IP on the same network on one NIC but I've never done this where I need to connect to lots of different networks - only where I've wanted to run different services on different IPs but not use DNAT. If you need to connect NIC 192.168.1.1 to router 192.168.1.2 and NIC 192.168.4.1 to router 192.168.4.2 are you saying rather than connecting them directly you use IP aliasing and a hub? How do I physically connect the routers 192.168.1.2 and 192.168.4.2 to my firewall if I'm using virtual addresses? From will.pink at gmail.com Tue Nov 25 12:29:38 2008 From: will.pink at gmail.com (william pink) Date: Tue, 25 Nov 2008 11:29:38 +0000 Subject: Linux Firewalling In-Reply-To: <492BDE50.9000007@gasops.co.uk> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> Message-ID: <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> Apologies I have only done it like you say but with different WAN IP's addresses, I wouldn't of thought what you want to do is possible with virtual interfaces but my knowledge of routing isn't great so I wouldn't assume it isn't possible. Will On 11/25/08, Longman wrote: > * william pink wrote: >> I use virtual interfaces for my firewalls I am intrigued on why you >> need physical NIC's? > > I use IP aliasing for configuring more than one IP on the same network > on one NIC but I've never done this where I need to connect to lots of > different networks - only where I've wanted to run different services on > different IPs but not use DNAT. If you need to connect NIC 192.168.1.1 > to router 192.168.1.2 and NIC 192.168.4.1 to router 192.168.4.2 are you > saying rather than connecting them directly you use IP aliasing and a hub? > > How do I physically connect the routers 192.168.1.2 and 192.168.4.2 to > my firewall if I'm using virtual addresses? > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > From paul-clug at mansfield.co.uk Tue Nov 25 16:46:03 2008 From: paul-clug at mansfield.co.uk (Paul M) Date: Tue, 25 Nov 2008 15:46:03 +0000 Subject: Linux Firewalling In-Reply-To: <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> Message-ID: <492C1DBB.8090002@mansfield.co.uk> get yourself a .1q & VLAN capable switch*, install the vlan package on the machine, encapsulate in .1q. put the unfirewalled wan on (say) vlan666, make the lan vlan2 (don't use default vlan, 1), dmz on say vlan3, etc. ensure you disable auto-negotiation of switch port encapsulation otherwise DMZ hosts could in theory break your security and tap into every vlan. unless you really are pumping gigabits through your firewall, a single good quality giga nic will pretty much handle it all. * cisco 35xx switch has excellent management functions, you can point cacti at it and monitor switch port usage. procurve switches also good, probably cheaper and use less power. some linksys switches might achieve this. avoid dlink or netgear, their so-called managed switches are awful. the Dell-branded Huawei are loved by a few, hated by many. From clug at gasops.co.uk Tue Nov 25 16:55:32 2008 From: clug at gasops.co.uk (Longman) Date: Tue, 25 Nov 2008 15:55:32 +0000 Subject: Linux Firewalling In-Reply-To: <492C1DBB.8090002@mansfield.co.uk> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> <492C1DBB.8090002@mansfield.co.uk> Message-ID: <492C1FF4.1060106@gasops.co.uk> * Paul M wrote: > get yourself a .1q & VLAN capable switch*, install the vlan package on > the machine, encapsulate in .1q. put the unfirewalled wan on (say) Completely lost me there. I think it's RTFM time... :) From jt at camalyn.org Tue Nov 25 20:23:12 2008 From: jt at camalyn.org (jt at camalyn.org) Date: Tue, 25 Nov 2008 19:23:12 +0000 Subject: job: web designer [Cambridge] Message-ID: <1227640992.9813.41.camel@linux-qtk6.site> hi everyone, I am hoping that a CLUG member may be able to help as I'm looking for a web designer comfortable with working in a Unix environment for a permanent job in Cambridge. The web designer should have at least a couple of years experience and be confident and capable of working with stylesheets, javascript and xml (think "ajax"). Ideally an on-line portfolio would be useful. Salary is negotiable as always. Kind regards James ________ James @ Camalyn ++44 (0) 7952 145 127 - mobile to learn more about Camalyn please visit http://www.camalyn.org From paul-clug at mansfield.co.uk Wed Nov 26 11:45:03 2008 From: paul-clug at mansfield.co.uk (Paul M) Date: Wed, 26 Nov 2008 10:45:03 +0000 Subject: datacentres in Cambridgeshire? Message-ID: <492D28AF.9010609@mansfield.co.uk> I know of two companies who provide this service, Telstra and Redstone. Both are pretty much full. I was wondering if anyone knew of any plans for any other companies who are setting up in this arena, or who do it but I didn't know about them? Or, is there anyone who has a proper computer room who'd has about four racks spare and would be interesting in renting then out? Conversely, we are considering kitting out one of our offices with a professional-grade UPS etc, and would end up with spare room; would anyone be interested? It doesn't have to be Cambridge, but somewhere close-ish idea (a circle 30m radius-ish). The closest I can see is the upcoming BlueSquare in Milton Keynes. Paul From paul at the-hug.org Wed Nov 26 11:57:01 2008 From: paul at the-hug.org (Paul Oldham) Date: Wed, 26 Nov 2008 10:57:01 +0000 Subject: datacentres in Cambridgeshire? In-Reply-To: <492D28AF.9010609@mansfield.co.uk> References: <492D28AF.9010609@mansfield.co.uk> Message-ID: <492D2B7D.6080900@the-hug.org> On 26/11/08 10:45, Paul M wrote: > I know of two companies who provide this service, Telstra and Redstone. > Both are pretty much full. > > I was wondering if anyone knew of any plans for any other companies who > are setting up in this arena, or who do it but I didn't know about them? > > Or, is there anyone who has a proper computer room who'd has about four > racks spare and would be interesting in renting then out? Conversely, we > are considering kitting out one of our offices with a professional-grade > UPS etc, and would end up with spare room; would anyone be interested? > > It doesn't have to be Cambridge, but somewhere close-ish idea (a circle > 30m radius-ish). The closest I can see is the upcoming BlueSquare in > Milton Keynes. Merula at Huntingdon have their own data centre -- Paul From colinj at mx5.org.uk Mon Nov 3 21:36:06 2008 From: colinj at mx5.org.uk (Colin Johnston) Date: Mon, 3 Nov 2008 20:36:06 +0000 Subject: samba via nfs = bad In-Reply-To: <49039C01.5040703@mansfield.co.uk> References: <126d63860810250647p5c38bf72kc700e03ba1f34982@mail.gmail.com> <27936.192.168.2.100.1224972105.squirrel@home.the-hug.net> <49039C01.5040703@mansfield.co.uk> Message-ID: and make sure you monitor the mirror status :) Colin On 25 Oct 2008, at 23:21, Paul wrote: > Paul Oldham wrote: >> Why not just slap a second disk drive of the same spec as the >> original in >> the server box (assuming there's a spare slot) and then configure the >> drives as a software RAID 1 pair? Minimal hardware cost and simple >> enough >> to do. > > agreed, > definitely the cheapest and quickest option. > possibly better thing, a hardware raid card installation, two new > drives > to create a mirror, and copying files over would be the next best > thing. > > BTW, in recent benchmarking, we found the Dell perc6 raid cards in > raid5 > gave massively higher performance than a cheap server with native > sata - > about four-fold improvement, using bonnie++ for testing, for > reading and > random I/O, and higher but not massively write speeds. > > oh, and of course, to take regular backups :-) and test them! > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > From paul-clug at mansfield.co.uk Tue Nov 4 15:52:11 2008 From: paul-clug at mansfield.co.uk (Paul M) Date: Tue, 04 Nov 2008 14:52:11 +0000 Subject: samba via nfs = bad In-Reply-To: References: <126d63860810250647p5c38bf72kc700e03ba1f34982@mail.gmail.com> <27936.192.168.2.100.1224972105.squirrel@home.the-hug.net> <49039C01.5040703@mansfield.co.uk> Message-ID: <4910619B.6020706@mansfield.co.uk> Colin Johnston wrote: > and make sure you monitor the mirror status :) this is as trivial as something like this... #!/bin/bash for S in server1 server2 ... serverN do ssh $S "cat /proc/mdstat" | grep F > /dev/null if [ $? -eq 0 ] ; then echo "Server $S has a mirror problem" | mail -s "mirror report" xyz at example.com fi done typed blindly, not debugged or tested. cron it up, watch for errors. whilst you're at it, for each disk, also do smartctl --all /dev/sda | grep Reallocated_Sector_Ct and look for numbers creeping up, it's the first sign of a failing disk IME. From tuxbox.guru at gmail.com Wed Nov 5 08:10:19 2008 From: tuxbox.guru at gmail.com (Richard) Date: Wed, 05 Nov 2008 07:10:19 +0000 Subject: OT best free wifi in Cambridge Re: Q: Why does my firewall hate the cambridge picturehouse? In-Reply-To: <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> References: <20081022105729.GL2994@omphalos.singularity> <0AE4ACE7-6BBC-4CAB-8602-5738FA6C8AE4@scotgate.org> <48FF1B17.7070907@gmail.com> <200810221513.30721.dom@latter.org> <48FF2EAE.6080300@gmail.com> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> Message-ID: <491146DB.5060409@gmail.com> Sam Kuper wrote: > 2008/10/22 Richard > > > Its easy to do a 20KM linkup using really inexpensive hardware. (I > have done this on 2.4Ghz and 5.8Ghz ISM hardware) using miniPCI > cards with Atheros chips. And sticking to the 100mW limits. > > I really do like the mesh thing tho.. but I am looking at a real > MAN grown up network. I am going to ask Matrix more about thier > network and how to connect using standard commodity hardware. > > > Please keep us (the list) posted. > > spk > ------------------------------------------------------------------------ > > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > Update: I have figured out their mail processing system.. after 2 emails to enquiries. forward:enquiries at matrix.co.uk > /dev/null It's really a disappointment for a company of this caliber to act in this manner. So I am looking at 'going it alone' as they dont seem interested in public relations. Richard From dom at latter.org Wed Nov 5 16:17:18 2008 From: dom at latter.org (Dom Latter) Date: Wed, 5 Nov 2008 16:17:18 +0100 Subject: OT best free wifi in Cambridge Re: Q: Why does my firewall hate the cambridge picturehouse? In-Reply-To: <491146DB.5060409@gmail.com> References: <20081022105729.GL2994@omphalos.singularity> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> <491146DB.5060409@gmail.com> Message-ID: <200811051617.20866.dom@latter.org> On Wednesday 05 November 2008 08:10:19 Richard wrote: [Cambridge Matrix] > I have figured out their mail processing system.. after 2 emails to > enquiries. > > forward:enquiries at matrix.co.uk > /dev/null > > It's really a disappointment for a company of this caliber to act in > this manner. So I am looking at 'going it alone' as they dont seem > interested in public relations. I've contacted Cambridge Matrix and they should by now have contacted Richard directly. Turns out that they use SORBS which unfortunately managed to misidentify Richard's email as spam. From tuxbox.guru at gmail.com Wed Nov 5 16:20:42 2008 From: tuxbox.guru at gmail.com (Richard) Date: Wed, 05 Nov 2008 15:20:42 +0000 Subject: Matrix In-Reply-To: <200811051617.20866.dom@latter.org> References: <20081022105729.GL2994@omphalos.singularity> <4126b3450810220657u357158a4kde6e076daab73e50@mail.gmail.com> <491146DB.5060409@gmail.com> <200811051617.20866.dom@latter.org> Message-ID: <4911B9CA.5050003@gmail.com> Dom Latter wrote: > On Wednesday 05 November 2008 08:10:19 Richard wrote: > > [Cambridge Matrix] > > >> I have figured out their mail processing system.. after 2 emails to >> enquiries. >> >> forward:enquiries at matrix.co.uk > /dev/null >> >> It's really a disappointment for a company of this caliber to act in >> this manner. So I am looking at 'going it alone' as they dont seem >> interested in public relations. >> > > I've contacted Cambridge Matrix and they should by now have contacted > Richard directly. > > Turns out that they use SORBS which unfortunately managed to misidentify > Richard's email as spam. > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > Thanks a million, I got an email from Graham and things have started to progress. Lets see what the future holds :-D Richard P From clug at gasops.co.uk Thu Nov 6 17:22:15 2008 From: clug at gasops.co.uk (Longman) Date: Thu, 06 Nov 2008 16:22:15 +0000 Subject: Keep two IMAP servers in Sync Message-ID: <491319B7.8010100@gasops.co.uk> What's the easiest way to have two IMAP servers with an identical set of email on each? imapsync ? rsync ? neither? Basically I'd like to have a central IMAP server accessible via the net but sadly I have to go with it being a box on the internal net (due to bandwidth and disk space reasons). This is fine for 99% of the time but if we need to move to another building (in case of fire) I'd need a duplicate box at the other location with all the email (unless I stick the box in the boot of a car which isn't a viable option!). What would be a good way of solving this kind of prob? From paul at the-hug.org Thu Nov 6 17:46:18 2008 From: paul at the-hug.org (Paul Oldham) Date: Thu, 6 Nov 2008 16:46:18 -0000 (UTC) Subject: Keep two IMAP servers in Sync In-Reply-To: <491319B7.8010100@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> Message-ID: <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> On Thu, November 6, 2008 16:22, Longman said: > What's the easiest way to have two IMAP servers with an identical set of > email on each? > > imapsync ? rsync ? neither? > > Basically I'd like to have a central IMAP server accessible via the net > but sadly I have to go with it being a box on the internal net (due to > bandwidth and disk space reasons). This is fine for 99% of the time but > if we need to move to another building (in case of fire) I'd need a > duplicate box at the other location with all the email (unless I stick > the box in the boot of a car which isn't a viable option!). > > What would be a good way of solving this kind of prob? Which IMAP server are you using? For example rsync won't work so well with Cyrus if the server is running at the same time but should with Courier ... -- Paul From clug at gasops.co.uk Thu Nov 6 17:52:58 2008 From: clug at gasops.co.uk (Longman) Date: Thu, 06 Nov 2008 16:52:58 +0000 Subject: Keep two IMAP servers in Sync In-Reply-To: <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> Message-ID: <491320EA.3080600@gasops.co.uk> * Paul Oldham wrote: > Which IMAP server are you using? For example rsync won't work so well with > Cyrus if the server is running at the same time but should with Courier > ... Courier-IMAP 1.6.0 From paul at the-hug.org Thu Nov 6 17:57:49 2008 From: paul at the-hug.org (Paul Oldham) Date: Thu, 6 Nov 2008 16:57:49 -0000 (UTC) Subject: Keep two IMAP servers in Sync In-Reply-To: <491320EA.3080600@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> Message-ID: <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> On Thu, November 6, 2008 16:52, Longman said: > * Paul Oldham wrote: >> Which IMAP server are you using? For example rsync won't work so well >> with Cyrus if the server is running at the same time but should with >> Courier ... > > Courier-IMAP 1.6.0 Well in that case rsync is a valid solution as Courier uses and extended version of Maildir - so it's all just files and directories, no fancy database like Cyrus. Having said that having just read the imapsync man page that seems like an equally valid solution so it probably depends what you're used to: if you already know rsync use that. But it is a bit fiddly to set up so if you're starting from scratch you might as well go for imapsync and that's probably slightly more robust. -- Paul From clug at gasops.co.uk Thu Nov 6 18:01:27 2008 From: clug at gasops.co.uk (Longman) Date: Thu, 06 Nov 2008 17:01:27 +0000 Subject: Keep two IMAP servers in Sync In-Reply-To: <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> Message-ID: <491322E7.8000000@gasops.co.uk> * Paul Oldham wrote: > On Thu, November 6, 2008 16:52, Longman said: > >> * Paul Oldham wrote: >>> Which IMAP server are you using? For example rsync won't work so well >>> with Cyrus if the server is running at the same time but should with >>> Courier ... >> Courier-IMAP 1.6.0 > > Well in that case rsync is a valid solution as Courier uses and extended > version of Maildir - so it's all just files and directories, no fancy > database like Cyrus. > > Having said that having just read the imapsync man page that seems like an > equally valid solution so it probably depends what you're used to: if you > already know rsync use that. But it is a bit fiddly to set up so if you're > starting from scratch you might as well go for imapsync and that's > probably slightly more robust. Well I already quite familiar with rsync using it extensively for various backup and transaction shipping type shenanigans -- great tool. I was more worried about what would happen if I try and rsync an active system where files are changing constantly. I can try a cron job at 4am or something but I don't want to copy any files that are in an invalid/incomplete state and end up with an unusable IMAP Maildir at the other end. From paul at the-hug.org Thu Nov 6 18:13:25 2008 From: paul at the-hug.org (Paul Oldham) Date: Thu, 6 Nov 2008 17:13:25 -0000 (UTC) Subject: Keep two IMAP servers in Sync In-Reply-To: <491322E7.8000000@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> <491322E7.8000000@gasops.co.uk> Message-ID: <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> On Thu, November 6, 2008 17:01, Longman said: > * Paul Oldham wrote: > >> Well in that case rsync is a valid solution as Courier uses and extended >> version of Maildir - so it's all just files and directories, no fancy >> database like Cyrus. >> >> [...] > > I was more worried about what would happen if I try and rsync an active > system where files are changing constantly. I can try a cron job at 4am > or something but I don't want to copy any files that are in an > invalid/incomplete state and end up with an unusable IMAP Maildir at the > other end. I think the worse that could happen is that an email could be corrupted, but I'm assuming that in the even of an emergency you would have time to do a 'kill' rather than just pulling the plug, so I'm hope rsync would be pretty atomic. But if you're worried imapsync does look like it could be your friend. Funnily enough we backup a customer's Cyrus IMAP mailbase over rsync every night and, having looked at imapsync, I may now switch to using that! -- Paul From clug at gasops.co.uk Fri Nov 7 14:06:01 2008 From: clug at gasops.co.uk (Longman) Date: Fri, 07 Nov 2008 13:06:01 +0000 Subject: Keep two IMAP servers in Sync In-Reply-To: <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> References: <491319B7.8010100@gasops.co.uk> <25975.192.168.2.100.1225989978.squirrel@home.the-hug.net> <491320EA.3080600@gasops.co.uk> <5283.192.168.2.100.1225990669.squirrel@home.the-hug.net> <491322E7.8000000@gasops.co.uk> <10170.192.168.2.100.1225991605.squirrel@home.the-hug.net> Message-ID: <49143D39.4070509@gasops.co.uk> * Paul Oldham wrote: > But if you're worried imapsync does look like it could be your friend. > > Funnily enough we backup a customer's Cyrus IMAP mailbase over rsync every > night and, having looked at imapsync, I may now switch to using that! Shall try both and see where I get. I need to rysnc to a box that has a tape so that it gets included in an overnight backup and also to the clone IMAP server. rsync can copy two SRC directories to one DEST but I don't seem to be able to see an option to copy one SRC to two DESTs. From magnus at therning.org Fri Nov 7 20:44:36 2008 From: magnus at therning.org (Magnus Therning) Date: Fri, 07 Nov 2008 19:44:36 +0000 Subject: Keep two IMAP servers in Sync In-Reply-To: <491319B7.8010100@gasops.co.uk> References: <491319B7.8010100@gasops.co.uk> Message-ID: <49149AA4.1040704@therning.org> Longman wrote: > What's the easiest way to have two IMAP servers with an identical set of > email on each? > > imapsync ? rsync ? neither? > > Basically I'd like to have a central IMAP server accessible via the net > but sadly I have to go with it being a box on the internal net (due to > bandwidth and disk space reasons). This is fine for 99% of the time but > if we need to move to another building (in case of fire) I'd need a > duplicate box at the other location with all the email (unless I stick > the box in the boot of a car which isn't a viable option!). > > What would be a good way of solving this kind of prob? Assuming you use a maildir-based IMAP server then I'd use unison, since it offers proper two-way sync. /M -- Magnus Therning (OpenPGP: 0xAB4DFBA4) magnus?therning?org Jabber: magnus?therning?org http://therning.org/magnus Haskell is an even 'redder' pill than Lisp or Scheme. -- PaulPotts -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 197 bytes Desc: OpenPGP digital signature Url : http://lists.infowares.com/archive/clug/attachments/20081107/e1a98ea9/attachment-0001.pgp From jt at camalyn.org Tue Nov 11 10:53:18 2008 From: jt at camalyn.org (jt at camalyn.org) Date: Tue, 11 Nov 2008 09:53:18 +0000 Subject: JOB: MYSQL DBA (Zurich, Switzerland) Message-ID: <1226397198.3973.36.camel@linux-qtk6.site> JOB: Hi List, Although I know this is the Cambridge-based LUG I have had much success with finding better than good people from this list for jobs so I really hope that nobody minds this posting. ?I am working with a Swiss client that try and use only open source solutions, whenever possible. They are looking to recruit a MySQL DBA to join a team of 6 in Zurich. Flights are paid for by the client to attend the interview and relocation assistance is offered too. Although the official language spoken in Zurich is German, you truly will manage to survive speaking English as this is widely spoken in hotels, restaurants, shops and business settings. ?The scope of the DBA role is that the DBA has to take care of all the client's database systems, concerning deployment, maintenance, patching, optimisation of performance. Plus, the DBA should be to have knowledge on common daily production systems administration and integration procedures, so that they will be able to run the daily checks as well as fixing the issues that the client might encounter. Bash shell scripting is definitely a required knowledge. The clients production database handles incoming data in many different ways but as an example they'd suggest that they do 100 million write operations per working day (spread around all the production databases). ?There are a total of 273 Linux servers, of which are around 55/60 run MySQL 5.0.x community edition (se MyISAM) ?on Linux both 32 and 64 bit, typically Fedora 6/8/9, some RHEL5 and they are trying to introduce CentOS There are around 60 databases across multiple services, size changes depending on the usage (production systems DB are around 200-250 MB each per day, archive data DB much bigger. The client's existing challenges/ most pressing issues relate to high volume transactions and replication. If anyone is interested in discussing with me further please contact me off-list. My e-mail address is james at camalyn.org All the best, JAMES From onepoint at starurchin.org Thu Nov 13 12:13:02 2008 From: onepoint at starurchin.org (Jeremy Henty) Date: Thu, 13 Nov 2008 11:13:02 +0000 Subject: For free: 2 PS2 keyboards Message-ID: <20081113111302.GI2975@omphalos.singularity> This is probably coals to Newcastle, but I've got two PS2 keyboards going free to anyone who wants them. Both well-used but serviceable. One Logitech, one Trust Power Plus, both UK layout, full-size 100+ keys. Pick up from Bateman Street (or any convenient pub). Cheers, Jeremy Henty From jt at camalyn.org Thu Nov 13 17:43:34 2008 From: jt at camalyn.org (jt at camalyn.org) Date: Thu, 13 Nov 2008 16:43:34 +0000 Subject: JOB: Unix/ Linux Systems Admin to support existing MySQL DBA Message-ID: <1226594614.5417.75.camel@linux-qtk6.site> Hi, I'm working with a client in Cambridge who is looking to recruit a permanent Unix/ Linux Systems admin to support the existing MySQL DBA. For more information please contact me off-list to discuss further. Thanks JAMES mailto: james at camalyn.org From marcus at quintic.co.uk Tue Nov 18 10:16:19 2008 From: marcus at quintic.co.uk (Marcus Williams) Date: Tue, 18 Nov 2008 09:16:19 +0000 Subject: KVM over IP or similar solutions Message-ID: <1226999267-sup-8445@stampy> Hi - Anyone know of any cheap kvm over ip solutions? Basically I've got a noname 1U rack from DNUK and need BIOS access :) Unfortunately its in a server room somewhere in Studley and my only access at the moment is ssh :( I was thinking of getting a kvm over ip card until I saw the price of them and then I remembered the remote insight boards for compaqs which are stupidly cheap on ebay. Any one know if these work in any rack or do they need to be attached to a compaq? Other solns welcome... Thanks Marcus From jt at camalyn.org Tue Nov 18 12:05:40 2008 From: jt at camalyn.org (jt at camalyn.org) Date: Tue, 18 Nov 2008 11:05:40 +0000 Subject: JOB: DBA/ *Nix Sysadmin - CAMBRIDGE In-Reply-To: <1226594614.5417.75.camel@linux-qtk6.site> References: <1226594614.5417.75.camel@linux-qtk6.site> Message-ID: <1227006340.4957.42.camel@linux-qtk6.site> hi List, ?Following on from the "very" short post below, our Cambridge-based client, is looking to hire a DBA/ *nix sysadmin type person - to form part of a multi-skilled sysadmin team who's main focus is to be involved and take responsibility for all aspects of the client's production environment. This is a position that requires someone to pick up and run with a number of tasks and be able to change from one operating environment to another quickly. This is a role that would definitely suit a workaholic. Ideally we are looking for a very intelligent and passionate sysadmin, someone who's specialities may include: Open Source Software, FreeBSD, Solaris and MySQL. ?It would be ideal if the sysadmin had development experience with several languages, such as Python, Java, Perl and PHP and in their spare time may even contribute to open source projects. The sysadmin should be competent with most Linux distributions, especially Ubuntu, Debian and RedHat. ?BSD or Solaris skills would be a plus. Networking and firewall understanding, especially Cisco and/or BSD-PacketFilter. Zeus or other layer7 application proxies/load balancers desirable. Configuring and tuning Apache, NFS and file-system replication. To discuss further please e-mail me at james at camalyn.org Kind regards JAMES >> to learn more about Camalyn please visit http://www.camalyn.org On Thu, 2008-11-13 at 16:43 +0000, jt at camalyn.org wrote: > Hi, > > I'm working with a client in Cambridge who is looking to recruit a > permanent Unix/ Linux Systems admin to support the existing MySQL DBA. > For more information please contact me off-list to discuss further. > > Thanks JAMES > > mailto: james at camalyn.org > > From paul-clug at mansfield.co.uk Tue Nov 18 12:56:46 2008 From: paul-clug at mansfield.co.uk (Paul M) Date: Tue, 18 Nov 2008 11:56:46 +0000 Subject: KVM over IP or similar solutions In-Reply-To: <1226999267-sup-8445@stampy> References: <1226999267-sup-8445@stampy> Message-ID: <4922AD7E.7030202@mansfield.co.uk> Marcus Williams wrote: > Anyone know of any cheap kvm over ip solutions? Basically I've got a > noname 1U rack from DNUK and need BIOS access :) Unfortunately its in > a server room somewhere in Studley and my only access at the moment is > ssh :( we have a couple of belkin ones, it takes modules which connect to the base unit over cat5 cables (not ethernet), offers usb and ps/2 modules. you can buy the modules in bundles which keeps the cost down. still not too cheap though. only snag is that they only work using activeX in windows. I'd advise staying clear of startech KVMs, ours have been a major PITA. having been through pain with various different cheap boxes with poor or no remote management card, recently eval'd HP's DL180 and found it lacking, we're going to be sticking with Dell. The DRAC5 cards (with latest firmware) can be remote managed using firefox3 and linux, 'cos the ip kvm viewer is a java app. From clug at gasops.co.uk Tue Nov 25 11:47:28 2008 From: clug at gasops.co.uk (Longman) Date: Tue, 25 Nov 2008 10:47:28 +0000 Subject: Linux Firewalling Message-ID: <492BD7C0.7020604@gasops.co.uk> Whenever I use a Linux box for a firewall I always run out of NIC space in the box itself. What do others do in these situations? Can you buy purpose built boxes with, say, room for 20 cards? From gareth.pullen at gmail.com Tue Nov 25 11:53:02 2008 From: gareth.pullen at gmail.com (Gareth Pullen) Date: Tue, 25 Nov 2008 10:53:02 +0000 Subject: Linux Firewalling In-Reply-To: <492BD7C0.7020604@gasops.co.uk> References: <492BD7C0.7020604@gasops.co.uk> Message-ID: If you can find somewhere which sells them, there's always things like this: http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ A bit pricey if you can find some (~$100 each from what I've seen). Gareth 2008/11/25 Longman : > > Whenever I use a Linux box for a firewall I always run out of NIC space > in the box itself. What do others do in these situations? Can you buy > purpose built boxes with, say, room for 20 cards? > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > From gareth.pullen at gmail.com Tue Nov 25 11:56:01 2008 From: gareth.pullen at gmail.com (Gareth Pullen) Date: Tue, 25 Nov 2008 10:56:01 +0000 Subject: Linux Firewalling In-Reply-To: References: <492BD7C0.7020604@gasops.co.uk> Message-ID: 2008/11/25 Gareth Pullen : > If you can find somewhere which sells them, there's always things like this: > http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ > A bit pricey if you can find some (~$100 each from what I've seen). > > Gareth Edit: The one linked above appears to present 1 NIC to the host OS, rather than the 4 ports. There are ones which present all 4 ports as individual NIC's to the host OS... Gareth From will.pink at gmail.com Tue Nov 25 12:03:20 2008 From: will.pink at gmail.com (william pink) Date: Tue, 25 Nov 2008 11:03:20 +0000 Subject: Linux Firewalling In-Reply-To: References: <492BD7C0.7020604@gasops.co.uk> Message-ID: <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> I use virtual interfaces for my firewalls I am intrigued on why you need physical NIC's? Will On 11/25/08, Gareth Pullen wrote: > 2008/11/25 Gareth Pullen : >> If you can find somewhere which sells them, there's always things like >> this: >> http://www.dooyoo.co.uk/network-adapter/d-link-dfe-570tx/ >> A bit pricey if you can find some (~$100 each from what I've seen). >> >> Gareth > > Edit: > The one linked above appears to present 1 NIC to the host OS, rather > than the 4 ports. There are ones which present all 4 ports as > individual NIC's to the host OS... > > Gareth > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > From clug at gasops.co.uk Tue Nov 25 12:15:28 2008 From: clug at gasops.co.uk (Longman) Date: Tue, 25 Nov 2008 11:15:28 +0000 Subject: Linux Firewalling In-Reply-To: <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> Message-ID: <492BDE50.9000007@gasops.co.uk> * william pink wrote: > I use virtual interfaces for my firewalls I am intrigued on why you > need physical NIC's? I use IP aliasing for configuring more than one IP on the same network on one NIC but I've never done this where I need to connect to lots of different networks - only where I've wanted to run different services on different IPs but not use DNAT. If you need to connect NIC 192.168.1.1 to router 192.168.1.2 and NIC 192.168.4.1 to router 192.168.4.2 are you saying rather than connecting them directly you use IP aliasing and a hub? How do I physically connect the routers 192.168.1.2 and 192.168.4.2 to my firewall if I'm using virtual addresses? From will.pink at gmail.com Tue Nov 25 12:29:38 2008 From: will.pink at gmail.com (william pink) Date: Tue, 25 Nov 2008 11:29:38 +0000 Subject: Linux Firewalling In-Reply-To: <492BDE50.9000007@gasops.co.uk> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> Message-ID: <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> Apologies I have only done it like you say but with different WAN IP's addresses, I wouldn't of thought what you want to do is possible with virtual interfaces but my knowledge of routing isn't great so I wouldn't assume it isn't possible. Will On 11/25/08, Longman wrote: > * william pink wrote: >> I use virtual interfaces for my firewalls I am intrigued on why you >> need physical NIC's? > > I use IP aliasing for configuring more than one IP on the same network > on one NIC but I've never done this where I need to connect to lots of > different networks - only where I've wanted to run different services on > different IPs but not use DNAT. If you need to connect NIC 192.168.1.1 > to router 192.168.1.2 and NIC 192.168.4.1 to router 192.168.4.2 are you > saying rather than connecting them directly you use IP aliasing and a hub? > > How do I physically connect the routers 192.168.1.2 and 192.168.4.2 to > my firewall if I'm using virtual addresses? > _______________________________________________ > CLUG mailing list > clug at cambridge-lug.org > Website: http://www.cambridge-lug.org > From paul-clug at mansfield.co.uk Tue Nov 25 16:46:03 2008 From: paul-clug at mansfield.co.uk (Paul M) Date: Tue, 25 Nov 2008 15:46:03 +0000 Subject: Linux Firewalling In-Reply-To: <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> Message-ID: <492C1DBB.8090002@mansfield.co.uk> get yourself a .1q & VLAN capable switch*, install the vlan package on the machine, encapsulate in .1q. put the unfirewalled wan on (say) vlan666, make the lan vlan2 (don't use default vlan, 1), dmz on say vlan3, etc. ensure you disable auto-negotiation of switch port encapsulation otherwise DMZ hosts could in theory break your security and tap into every vlan. unless you really are pumping gigabits through your firewall, a single good quality giga nic will pretty much handle it all. * cisco 35xx switch has excellent management functions, you can point cacti at it and monitor switch port usage. procurve switches also good, probably cheaper and use less power. some linksys switches might achieve this. avoid dlink or netgear, their so-called managed switches are awful. the Dell-branded Huawei are loved by a few, hated by many. From clug at gasops.co.uk Tue Nov 25 16:55:32 2008 From: clug at gasops.co.uk (Longman) Date: Tue, 25 Nov 2008 15:55:32 +0000 Subject: Linux Firewalling In-Reply-To: <492C1DBB.8090002@mansfield.co.uk> References: <492BD7C0.7020604@gasops.co.uk> <7891dd830811250303p723fdc26pc6628c957c2d9608@mail.gmail.com> <492BDE50.9000007@gasops.co.uk> <7891dd830811250329r62dbb345n493cc3a4599118b9@mail.gmail.com> <492C1DBB.8090002@mansfield.co.uk> Message-ID: <492C1FF4.1060106@gasops.co.uk> * Paul M wrote: > get yourself a .1q & VLAN capable switch*, install the vlan package on > the machine, encapsulate in .1q. put the unfirewalled wan on (say) Completely lost me there. I think it's RTFM time... :) From jt at camalyn.org Tue Nov 25 20:23:12 2008 From: jt at camalyn.org (jt at camalyn.org) Date: Tue, 25 Nov 2008 19:23:12 +0000 Subject: job: web designer [Cambridge] Message-ID: <1227640992.9813.41.camel@linux-qtk6.site> hi everyone, I am hoping that a CLUG member may be able to help as I'm looking for a web designer comfortable with working in a Unix environment for a permanent job in Cambridge. The web designer should have at least a couple of years experience and be confident and capable of working with stylesheets, javascript and xml (think "ajax"). Ideally an on-line portfolio would be useful. Salary is negotiable as always. Kind regards James ________ James @ Camalyn ++44 (0) 7952 145 127 - mobile to learn more about Camalyn please visit http://www.camalyn.org From paul-clug at mansfield.co.uk Wed Nov 26 11:45:03 2008 From: paul-clug at mansfield.co.uk (Paul M) Date: Wed, 26 Nov 2008 10:45:03 +0000 Subject: datacentres in Cambridgeshire? Message-ID: <492D28AF.9010609@mansfield.co.uk> I know of two companies who provide this service, Telstra and Redstone. Both are pretty much full. I was wondering if anyone knew of any plans for any other companies who are setting up in this arena, or who do it but I didn't know about them? Or, is there anyone who has a proper computer room who'd has about four racks spare and would be interesting in renting then out? Conversely, we are considering kitting out one of our offices with a professional-grade UPS etc, and would end up with spare room; would anyone be interested? It doesn't have to be Cambridge, but somewhere close-ish idea (a circle 30m radius-ish). The closest I can see is the upcoming BlueSquare in Milton Keynes. Paul From paul at the-hug.org Wed Nov 26 11:57:01 2008 From: paul at the-hug.org (Paul Oldham) Date: Wed, 26 Nov 2008 10:57:01 +0000 Subject: datacentres in Cambridgeshire? In-Reply-To: <492D28AF.9010609@mansfield.co.uk> References: <492D28AF.9010609@mansfield.co.uk> Message-ID: <492D2B7D.6080900@the-hug.org> On 26/11/08 10:45, Paul M wrote: > I know of two companies who provide this service, Telstra and Redstone. > Both are pretty much full. > > I was wondering if anyone knew of any plans for any other companies who > are setting up in this arena, or who do it but I didn't know about them? > > Or, is there anyone who has a proper computer room who'd has about four > racks spare and would be interesting in renting then out? Conversely, we > are considering kitting out one of our offices with a professional-grade > UPS etc, and would end up with spare room; would anyone be interested? > > It doesn't have to be Cambridge, but somewhere close-ish idea (a circle > 30m radius-ish). The closest I can see is the upcoming BlueSquare in > Milton Keynes. Merula at Huntingdon have their own data centre -- Paul