3 * Get rid of any services running on the host.
4 * Optional, shut down the machine, then wait a month
7 badblocks -v -s -p 5 -w -f /dev/sda
9 * Revoke puppet certificate
11 on handel: puppetca clean $HOST
15 * Remove any references from puppet configuration
16 * Remove references to the host from DNS files, including reverse DNS
17 * Get rid of the HW (tell the hoster to get rid of it or other as appropriate)
19 Three months after decomissioning: