Decommissioning systems

Introduction

This is a basic checklist of things for me to do when I decommission a system.

Procedure

1. Shutdown the machine.
2. Expect complaints from:
   • Check_MK
   • rdw (or other backup software)
   • rocon-check
3. Wait two weeks (and possibly add a wake up call to my calendar).
4. If the system is a VM then:
   1. On each VM server run:

      virsh undefine <vm-name>
      

   2. On each storage server that hosts the VM’s image run:

      drbdadm down <drbd-vol-name>
      ...
      rm /etc/drbd.d/<vm-name>.res
      ...
      lvremove /dev/vg0/<vm-name>
      ...
      

5. Remove the system from Check_MK.
6. Remove the system from the backup server’s configuration but do not delete the backups themselves yet by running:

   ssh root@<backup-server>
   rdw --del-dle nightly <host>-boot
   rdw --del-dle nightly <host>-root
   ...
   rdw --del-client <host>

7. Remove the system from the rocon server’s /etc/rocon.conf file.
8. Remove the system from DNS.
9. Remove the system’s own WordPress page, its link on the Computing page and any other links that a search results in.
10. Wait six weeks (and possibly add a wake up call to my calendar).
11. Remove the system’s own WordPress page from the bin (if the bin has not been purged recently).
12. Remove the system’s backups by running:

    this bit to be written (02/06/2019)

See also

• Computing