Site downtime, Saturday 14th April 2007

Posted by Steve on Fri 13 Apr 2007 at 10:43

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I'm just posting this to give advance warning that this site may be unavailable for parts of Saturday morning. Hopefully the downtime should be only a couple of hours at the most.
Update: Etch upgrade complete. No significant issues.

The reason for the downtime is two-fold:

  • Firstly I wish to upgrade the host machine to Debian's new release, Etch.
  • Secondly I wish to reorganise the software which is installed upon the box.

There will be a further few hours of downtime later in the month, or early next month, when I setup some clusters, but otherwise this should be the only interruption in service for the forseeable future.

Thanks for your patience!

 

 


Posted by Anonymous (88.1.xx.xx) on Fri 13 Apr 2007 at 11:55
Good luck, Steve. And thanks for all your hard work!!

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Posted by Anonymous (86.12.xx.xx) on Fri 13 Apr 2007 at 17:25
i guess the upgrade went well :) haven't heard much of problems with upgrading from sarge to etch. thanks again for all the work Steve.

sno

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Posted by Steve (62.30.xx.xx) on Fri 13 Apr 2007 at 20:12
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It hasn't happened yet!

Still I don't anticipate too many problems.

Steve

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Posted by rob (72.192.xx.xx) on Sat 14 Apr 2007 at 07:32
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Well, I'll admit I ran into a couple snags upgrading to Etch. I have an hp desktop and an acer laptop, both of which were happily running Sarge, tweaked to my liking but essentially pretty much standard installs with 'stable' packages only and both backed-up regularly.

Started with the laptop, did a final aptitude update and dist-upgrade under sarge, did a dpkg audit, changed the source list to Etch, everything looking a-okay, down to single user, start 'script' to keep a running account of any errors, woo-hoo start the upgrade with just 'upgrade' first then init.d-tools and then a kernel image (I gave up custom kernels last year. No point for desktop systems anymore.) and this is where I ran into catch-22 dependency hell. Aptitude said I could have the new kernel but the rest of the system was no longer needed and would be removed. It got worse from there. Ah, I can check the script I had running. Gone! Never even got to dist-upgrade and was not able to determine the cause(s) of the problems.

Using all the GNU/Linux knowledge and skills I've acquired over the last ten years I arrived at a simple solution for the problem. I downloaded and burnt a net install iso and did a fresh install. It worked perfectly on both computers and I'm very happy with Etch. I believe the only thing I'll add from my Sarge back-ups is some music.

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Posted by eric (82.64.xx.xx) on Fri 13 Apr 2007 at 19:24
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Are you doing this on your xen hosted machine? On the domU or also the dom0?

If you can, post some information about this/these migration(s). I'm very interested about it.

Good luck.

:eric:
http://blog.sietch-tabr.com

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Posted by Steve (62.30.xx.xx) on Fri 13 Apr 2007 at 20:11
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This machine is currently a dedicated host, graciously provided by Bytemark. (Donated shortly before I started working for them..) So there is no Xen involved here at the moment.

The plan is to partition this up into a Xen system, so that it can be configured with 3-4 guests each doing a different thing. Maybe something like this:

  1. Web-server (+memcached)
  2. Web-server (+memcached)
  3. Web-server load-balancer
  4. Database-server (+memcached)

Thats the work that will be carried out in a month or so, after the upgrade to Etch tomorrow.

I'm not sure if it will help the site, but I think it is something I'd do regardless, because it will allow a lot of admin tasks to be simplified for me.

Steve

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Posted by Anonymous (213.164.xx.xx) on Sat 14 Apr 2007 at 13:00
Did you find your load average dropped with the new kernel? Mine did.

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Posted by JulienV (86.204.xx.xx) on Sat 14 Apr 2007 at 13:09
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I have noticed the same thing on my small home server, but I am not sure it is related to the kernel, as I already had installed vanilla 2.6.18 before Etch release (I now run Debian kernel).

The number of processes has however doubled since the upgrade.

Cheers,
Julien

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Posted by Steve (62.30.xx.xx) on Sun 15 Apr 2007 at 00:57
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To be honest no, but I didn't upgrade my kernel since I'm running a backported 2.6.20 .. so if there was a speedup it was gained a while ago.

Steve

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Posted by Anonymous (200.68.xx.xx) on Sun 15 Apr 2007 at 23:42
The quick site search isn't working as before. If i search for "uml" or "user mode linux" i don't find the articles i found before (and i found them on this site using google). Also, searching "lvm" returns nothing (and there are articles about lvm), and searching for "raid" does not find all about raid (i find the article i was searching in this site about raid using google)

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Posted by Steve (62.30.xx.xx) on Mon 16 Apr 2007 at 06:30
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Cheers, should be fixed now.

I'd forgotten to reset the minimum length of the word to be included in a FULLTEXT index - which defaults to four. This is as described in our article on MySQL fulltext searches for reference.

Steve

[ Parent | Reply to this comment ]

Posted by Anonymous (200.68.xx.xx) on Mon 16 Apr 2007 at 18:13
Yes, it does!
Thanks a lot!

[ Parent | Reply to this comment ]

Posted by Anonymous (67.88.xx.xx) on Mon 16 Apr 2007 at 19:26
I can't say my experiences have been perfect. I tried a fresh install on a Dell poweredge 700 the latest kernel does not detect the CDROM. I was moving my windows vmware server to debian.

I had to install sarge with the 2.4 kernel (it's 2.6 does the same thing) and then do a dist-upgrade. At this time my CD is not that important and my research shows it's something to do with SATA drives and bios making the CD look like SATA or something like that.

I can say it has substantially improved my vmware server speed compared to the junky 2003 that I originally tried it on. I just need to figure out how to get my CD-rom working again and then I will be happy. I have a poweredge 750 running sarge right now that I need to upgrade. I imagine that one will also have the cd problem.

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Posted by kroshka (66.252.xx.xx) on Fri 27 Apr 2007 at 01:35
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I am in the process of upgrading various servers here. One runs subversion and cvs, others runs smtp/email servers, java etc. All servers run some form apache, have ldap authentication and quite a number have custom installed software in /opt/. So far I had little to no problems. Just the odd glitch which could be solved within 15 minutes, and which would happen likewise with a sarge security update or something.

Servers though, because they generally do not need X and other fancy stuff, have an easy time being upgraded.

One thing I noticed is that http://non-us.debian.org/debian-non-US stable/non-US can not have stable replaced with etch, as was the case with sarge.

[ Parent | Reply to this comment ]

Posted by Steve (80.68.xx.xx) on Fri 27 Apr 2007 at 10:05
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Yes non-US was removed some time ago.

Steve

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