# Decomissioning hosts

 * Get rid of any services running on the host.
 * Optional, shut down the machine, then wait a month
 * Zero disks

    badblocks -v -s -p 5 -w -f DEVICE_GOES_HERE

 * Revoke puppet certificate

   * on handel: puppet node clean $HOST
   * reinit samhain on handel

 * Remove from LDAP
   * including references such as subgroup: foo@hostname or supplementarygid: foo@hostname
   * rerun puppet on backuphost / the backup host
   * reinit samhain on backuphost
 * Remove from Nagios
 * Remove any references from puppet configuration
 * Remove references to the host from DNS files, including reverse DNS
 * Get rid of the HW (tell the hoster to get rid of it or other as appropriate)
 * Update password file information for the $HOST
 * Remove MQ queues related to machine (see [[doc/mq]] for details)

    for queue in $(rabbitmqadmin -N rainier list queues name | \
    grep unger.debian.org | \
    awk '{print $2}') ; do
    rabbitmqadmin -N rainier -V dsa delete queue name=$queue
    done

 * Remove disks from the MSA 
   * run multipath -ll on the KVM host and find all disks on that multipath

```
    dm=$(sudo multipath -ll | grep "finzi-srv " | awk '{print $3}')
    cd /sys/devices/virtual/block/$dm &&
    for device in $(ls -1); do "echo 1 > /sys/block/$device/device/delete"; done
    multipath -f finzi-srv

```
   * for each disk in those multipath run

     echo 1 > /sys/block/sdX/device/delete

   * once done, remove that multpath-device from multipath

     multipath -f finzi-srv

   * remove the paths in the MSA

Three months after decomissioning:
 * Remove backups