Clean up unnecessary docker services

Docker service is deployed on many nodes which doesn't require it anymore, like cassandra cluster nodes and rancher cluster nodes.

assigned to @guillaume

On cassandra nodes:

• cassandra01
• cassandra02
• cassandra03
• cassandra04
• cassandra05
• cassandra06
• cassandra07
• cassandra08
• cassandra09
• cassandra10

systemctl stop docker
systemctl stop docker.socket

apt purge docker-ce
apt autoremove

zpool destroy docker
lvremove /dev/$(hostname)-vg/docker

rm -rf /etc/docker /var/lib/docker \
  /etc/default/docker-storage \
  /etc/apt/sources.list.d/docker.list \
  /etc/systemd/system/docker.service.d

ip link delete docker0

groupdel docker

find / -maxdepth 4 -name '*docker*'

/run/docker

added 1h of time spent

mentioned in commit swh/infra/puppet/puppet-swh-site@87f3ec17

On rancher cluster:

• test-staging-rke2
  • rancher-node-test-rke2-mgmt1
  • rancher-node-test-rke2-worker1
  • rancher-node-test-rke2-worker2
• archive-staging-rke2
  • rancher-node-staging-rke2-mgmt1
  • rancher-node-staging-rke2-worker1
  • rancher-node-staging-rke2-worker2
  • rancher-node-staging-rke2-worker3
  • rancher-node-staging-rke2-worker4
  • rancher-node-staging-rke2-worker5
  • rancher-node-staging-rke2-worker6
• archive-production-rke2
  • rancher-node-metal01
  • rancher-node-metal02
  • rancher-node-metal03
  • rancher-node-production-rke2-mgmt1

systemctl stop docker docker.socket

apt purge docker-ce
apt autoremove

zfs destroy data/docker

rm -rf /var/lib/docker \
/etc/apt/sources.list.d/docker.list \
/etc/systemd/system/docker.service.d \
/etc/default/docker-storage \
/etc/docker

ip link delete docker0

groupdel docker

find / -maxdepth 4 -name '*docker*'

/run/docker

added 2h of time spent

closed