MPU Meeting Wednesday 25th April 2018



User Security Training


Virtual Desktop


LCFG Profile Security

Stephen has continued to work on the LCFG installer to add support for securely fetching profiles, he has blogged on changes to om.

Miscellaneous Development

ngeneric kinit plugin
Stephen has fixed a bug (bug#1060) and added some new features ((bug#1061) to the LCFG ngeneric kinit plugin -

privacy features
Stephen has added new headers for restricting access to dmesg - lcfg/options/privacy/dmesg.h - and utmp/wtmp - lcfg/options/privacy/utmp.h - along with support for hiding process listings - lcfg/options/privacy/procfs.h. The utmp/wtmp restrictions will be enabled everywhere, the procfs and dmesg limits will only be used on external facing servers, e.g. SSH, NX and RDP.


openafs 1.8.0
There are now packages for openafs 1.8.0. Stephen has begun testing the client and Services Unit will look at the server-side. The plan is to roll out the client as part of the SL7.5 upgrade in the summer.

Chris has been investigating the problems Iain Rae had with dsu on some of his cluster machines.

Firmware upgrades
azul has been upgraded. Work on gaivota has been postponed due to issues with migrating large VMs and/or multiple disks. Currently we can't migrate the ISS RT instance but it needs to be available during the day, maybe this will have to wait until after BoE has met? We will now move onto upgrading the AT KVM servers which still need a reboot for the SL7.4 kernel.

IBM array
The wipe of the disks is almost complete.

Kernel upgrade
Stephen plans to push out a kernel update in the first stable release after the online exam on Tuesday 8th May.

This Week

  • Alastair
    • Inventory project
      • continue working through TartarusWorkFlow
      • Document clientreport (eg how to add modules)
      • Document order sync code
      • Document hpreport processing script
      • Start work on final report!
      • Consider what else needs done other than docs and tidying and backups
      • Blog something....take dev meeting talks
      • and give details on how Tartarus tables are accessed to Ian D for inclusion in his privileged access discussion paper
      • Look at postgresql replication (do after shipping)
      • Add tartarus info to SwitchToSelfManaged
      • Complete removal of non authenticated access to API and web
      • Need tests for API /orders and need new tests to check for correct authorisation
    • Schedule MPU meeting to discuss systemd ordering
    • Take a look at RT #78875
    • Look at /etc/hosts - dns issue (IPV6?)
      • work out what we need to fix current problem
    • Circulate info on RH7.3 systemd changes we may wish to consider
    • RT actions (as agreed)
    • Implement change to kvmtool to allow KVMs to be marked as disabled
      • looked at this - looks like the metadata tag isn't passed through libvirt (prior to 4.0.0), so can't be read/written by kvmtool
      • put on activities list to do once upgrade to libvirt-4.0.0
    • Look at Stephen's 'Thoughts on shell components'
    • Look at MPUActivitiesList
    • Start looking at https and (remove assumption that https means want cosign login)
      • wait on Neil's efforts with EdWeb
    • Chase Alison about LCFG check monitoring ( start doing again )
    • Investigate systemd reboot bug on gaivota and add some more debugging (store tree diff somewhere)
    • Report on this at next ops meeting that have changed journald configuration (MPU report)
    • Discuss with Neil - drupal username collection re GDPR
    • Inventory stuff re GDPR
    • Check with Tim / George about capability for login to student machines - where are we
    • Add %slaac to hulp and lagun after 21/02/18
    • Useful? - a script which checks how fast a machine's console log is growing (eg huge number of dbus problems on hammersmith)
      • suggest to Ian D
    • Blog on projects
    • KVM pcid
      • Created MPUSpectreMeltdown
      • Put detection script somewhere for people to use
      • Which CPU is needed for each group..
Following config worked on 'brent' (hosted on vermelha). We might need to consider whether we want "match='exact'" wrt migrations.
<cpu mode='host-model' match='exact'>
<model fallback='allow'>IvyBridge</model>
<feature policy='require' name='pcid' />
    • Look at why kvmtool doesn't work on circle (running libvirt 4.0.0)
    • Read and comment on Stephen's notes on the LCFG security project
    • Look at how to wipe the IBM disk array disks
    • Read Chris's blog on ThoughtsOn403

  • Chris
    • Inventory project
      • Continue work on clientreport modules for replacing firmwarereport
    • Look at MPUActivitiesList
    • Look at RT
    • Continue work on SL7 coordination final project report (currently pending other units completing)
    • libvirt - test for memory leaks (wrt console servers) Ian will test it for memory leaks after the 17 January stable release
    • User training materials project #403
    • Read and comment on Stephen's notes on the LCFG security project
    • Check to see if any of the MegaRAID controllers support disk wipe from the BIOS
    • Schedule AT KVM server reboots

  • Stephen
    • LCFG client refactor stage 2
      • Bring LCFG v4 client project to closure
    • RT actions (as agreed)
    • submit polkit bug to redhat - with Alastair (still exists under 7.3)
    • Produce some text for systemd mount bug (to submit to RH)
    • Take issue of disable per user journald logs on certain servers to OPS
    • Consider PD work for after LCFG client ...
      • looking at Ceph
    • Look at MPUActivitiesList
    • On metropolitan, find fastest baud rate we can drive the real physical consoles. (This so we can decide whether to use physical consoles for KVM servers).
    • Look at where we're using ALL in access.conf
    • Agree with RAT how software package requests are handled - waiting on Graham documenting
    • Start off NX replacement project (#389)
      • Complete Documentation
      • Introduce test service for staff users on metropolitan
    • Check whether websites are still using Allow/Deny configuration
      • Check individual .htaccess files

-- AlastairScobie - 25 Apr 2018

Topic revision: r4 - 23 Sep 2019 - 13:33:41 - AlastairScobie
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