CMS Tier-3 Upgrade Planning Page

phase B restructuring

Summary

--++ Details

dCache upgrade to 1.9.5-16

test on t3fs05 filesystem to find bottleneck

Pool migration from t3fs05 to a new Thor

List of open tasks

• Virtual machine infrastructure
  • install a semi-permanent vmware-server host (t3wn08 has 1 broken NIC port. Should probably free this machine for repairs)
  • test running VMs over NFS with the images residing on ZFS on a thumper (t3fs06?)
  • migrate all virtual machines to this new installation DOWNTIME
• File servers and dCache
  • find solution to upgrade problem
  • prepare new Thors for dcache
    • make standard configuration procedure where puppet takes over most of the config. We cannot do a full puppet host install, since there is no coupling between the JumpStart and puppet
    • setup raidz2 ZFS structure for the pools
    • install dCache and bring the Thors online with writes disabled
  • migrate the data to the new pools to free up servers
  • Reinstall the old thumpers through Jumpstart, standard config + puppet, so that we have everywhere the same Solaris version and a raidz2 configuration
  • Migrate dcache to Chimera
• Home directories
  • implement daily snapshots of shome on t3fs06 (cron based script, delete older snapshots)
  • implement incremental snapshot transfers to a backup server
• Services
  • convert the VM t3ui02 to a real physical machine (let's take t3wn01)
  • Setup a new VM for the VO-Box (mostly phedex... I think that frontier should stay on a phys host with local HD)
• Lesser priority
  • LDAP direcetory service
    • should we move that onto a VM? Is the admin host indeed a good place for this? backup and failback? This is a critical system
    • make use of the new extension fields, so that the can be used in automated scripts
  • Attach system to NAGIOS (maybe a project for a practicum student?)