Cluster dissmissing right procedure without data loss or damage to VPSs

Feb 21, 2022
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Dear users, i have to dismiss a dedicated server that is the master of a cluster of 3 machines.
Later i would also like to completely delete the cluster from the 2 remaining slaves.

If I'm not mistaken these are the necessary steps / commands:

I remove all the restart and replication settings on HA
Remove all scheduled backups
STOP of all active VPS (there are no more on the master machine)

so, on the master machine:
# pvecm nodes

I get:
#Membership information
----------------------
1 1 master (local)
2 1 slave1
3 1 slave2

I delete the 2 slaves with:
#pvecm delnode pve2
pvecm delnode pve3

For verify:
#pvecm status

Finally i will turn off the master server and will enter individually on both "ex" slaves and start the VPS, I am confident that they will restart without errors.

Do I forget something important?

Just last question; should we also delete the coronasync settings on the 2 remained active servers?

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

Thanks
 

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