Removing the platform

To delete a cluster, several steps need to be followed:

1. Remove all additional nodes from the cluster:

   1.1. Remove the node from the Kubernetes cluster:

   d8 k drain <node> --ignore-daemonsets --delete-local-data
   d8 k delete node <node>
   

   1.2. Run the cleanup script on the node:

   bash /var/lib/bashible/cleanup_static_node.sh --yes-i-am-sane-and-i-understand-what-i-am-doing
   

2. Check the update channel set in the cluster. To do this, run the command:

   d8 k get mc deckhouse -o jsonpath='{.spec.settings.releaseChannel}'
   

3. Run the Deckhouse installer:

   docker run --pull=always -it [<MOUNT_OPTIONS>] \
      registry.deckhouse.ru/deckhouse/<DECKHOUSE_REVISION>/install:<RELEASE_CHANNEL> bash
   

   where:

   • <MOUNT_OPTIONS> — the options for mounting files into the installer container, such as SSH access keys;
   • <DECKHOUSE_REVISION> — edition of the platform (e.g., ee — for Enterprise Edition, ce — for Community Edition, etc.)
   • <RELEASE_CHANNEL> — update channel of the platform in kebab-case. It should match the one set in config.yaml during the installation of DVP:
     • alpha — for the Alpha update channel;
     • beta — for the Beta update channel;
     • early-access — for the Early Access update channel;
     • stable — for the Stable update channel;
     • rock-solid — for the Rock Solid update channel.

   Example of running the installer container for the CE edition:

   docker run -it --pull=always \
      -v "$PWD/dhctl-tmp:/tmp/dhctl" \
      -v "$HOME/.ssh/:/tmp/.ssh/" registry.deckhouse.ru/deckhouse/ce/install:stable bash
   

4. Execute the cluster removal command:

   dhctl destroy --ssh-user=<USER> \
      --ssh-agent-private-keys=/tmp/.ssh/id_rsa \
      --yes-i-am-sane-and-i-understand-what-i-am-doing \
      --ssh-host=<MASTER_IP>
   

   where:

   • <USER> — the user of the remote machine from which the installation was performed;
   • <MASTER_IP> — IP address of the master node in the cluster.

   The installer will connect to the master node and remove all Deckhouse components and the Kubernetes cluster from it.