MPU Meeting Tuesday 28th July 2009

Power Management Project

Not much has happened recently. Now that SL5.3 is installed on most of the student lab machines Chris will be able to start doing more widespread testing. The new HP DC7900 needs to be tested.


Alastair has realised that the packages need to be accessed in other ways than via the filesystem and over http with help of the Apache mod_waklog. In particular we need to give rsync access to the package repository to IS (and possibly SEE). For now this will be done with an IP based ACL for the machine running the rsync daemon. There will be some changes to the repository layout and we need to raise this issue with Kenny at the next LCFG Deployers Meeting.

We need to find out if any external access via http to the rpm master is still required.

Alastair has started writing up some notes regarding the new package repository in the DICE wiki at MPUPackageRepository.

AFS Component

The test fileserver, mermaid, has been configured using the new component. Simon has been using the machine for some performance testing.


Chris has repackaged the tibs RPM so it owns all the files it installs. He had some problems with it overwriting configuration and state files managed by the LCFG component. Stephen suggested using the %config(noreplace) directive in the %files section of the specfile.

Chris has been blogging about his progress.

LCFG Server Refactoring

Not much has happened with the development of the test suite. Simon has setup git and gerrit so they are ready for the LCFG server code and local dependencies to be imported.

Miscellaneous Development

There were a few problems with the upgrade to SL5.3, mostly related to those machines which had to be held on SL5.2. There were some package conflicts related to an update of openssh and the kernel. There was also a problem with drookit but it's not clear exactly what happened, Stephen needs to do some further investigation.

Stephen found some problems with the new LCFG::Om::Environment::NewAFSPAG he was testing on his desktop. It didn't cope with situations in which the AFS client was not yet started, such as at boot-time.


The problem with the timestamp not being updated in the manual method was fixed. A separate problem with the way that the AUTO random time was seeded from the hostname was also resolved, the fix for that still needs to be rolled out.

Stephen has now changed the boot priority so that this starts after the LCFG client and that has gone into the stable release.

VMWare performance issues
We experienced some terrible performance from the VMWare ESX server during the SL5.3 upgrade of the hosted servers. It appears that the evo arrays are just not fast enough, some of this may be caused by them not having the optimal configuration.

New time category
It was agreed that we would have a new time-monitoring category for work associated with requests from users. Alastair will add a note to the MPUTimeMonitoring wiki page.

Problem with ls
Julian Bradfield has found a bug in the updated version of ls in SL5.3, see RT#43055 for details.

Server moves
Chris and Carol have finished moving all the MPU servers which do not need to be in a rack with fibre-channel access.

updaterpms lockups
We need to look at why updaterpms is not being run for long periods on some machines. Possibly we could add some nagios monitoring to check the last time the machine successfully carried out a software update. That information is in the LCFG server status pages.

multipath & nagios
This is now ready to go, Alastair will announce to COs.

cosign v3
Stephen found some problems with the LCFG server apache config and the way it used a block which conflicted with cosign v3 and the new validation block.

diydice move
To simplify the configuration of dresden we plan to move diydice to a new server. Chris will do that this week.

Forum tracker
We need to move the Forum Tracker RT service to cosign v3.

Install CD default
We should change the default drive from hdc to sr0

This Week

Alastair will:

  • Talk to Carol about the LCFG level work.
  • Remind Craig about moving hawthorn to KB.
  • Work on rpmsubmit project.
  • Package scli
  • rpmsubmit
  • Tidy LCFG/inf level

Carol will:

  • Set up LCFG/inf level VM to monitor LCFG level.

Chris will:

  • Move diydice to a new virtual server DONE
  • TIBS component
  • Forum tracker and cosign v3 DONE
  • HP DC7900 sleep testing DONE
  • sleep in student labs

Stephen will:

  • LCFG server refactoring
  • Update PXE installer to SL5.3
  • Push out lcfg-cron update

-- StephenQuinney - 31 Jul 2009

Topic revision: r3 - 05 Aug 2009 - 14:34:50 - ChrisCooke
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