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Remove Node from Cluster

IfIntroduction

These are the steps if a node needs to be removed entirely from the cluster and stillfunction usedas aftera thesingle removalnode

the

following must happen
Steps

 

  1. Remove or mitigate all VMs and containers awayfrom nodes that will be decommissioned
  2. Create a ZFS snapshot of rpool and rpool/data on the single node
  3. Delete the nodes that will be decommissioned
  4. remove the cluster config

Snapshot

zfs snapshot rpool@<date>
zfs snapshot rpool/data@<date>

Remove the decommissioned nodes from the node.single

  • node

    pvecm delnode <nodename>

    Run the following code

    • to  delete the cluster and create a single node

    It may be best to run this line by line to see the output.

    systemctl stop pve-cluster corosync
pmxcfs -l
rm /etc/corosync/*
rm /etc/pve/corosync.conf
killall pmxcfs
systemctl start pve-cluster
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