Create leave-cluster.sh

Leaving a created cluster in Proxmox 6.1-8

leave-cluster.sh

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+#SSH into proxmox cluster node
+#1. Shutdown all containers and vms
+pvesh create /nodes/localhost/stopall
+
+
+#2. stop services
+systemctl stop pvestatd.service
+systemctl stop pvedaemon.service
+systemctl stop pve-cluster.service
+systemctl stop corosync
+systemctl stop pve-cluster
+
+
+#3. edit through sqlite, check, delete, verify
+sqlite3 /var/lib/pve-cluster/config.db
+sqlite> select * from tree where name = 'corosync.conf';
+sqlite> delete from tree where name = 'corosync.conf';
+sqlite> select * from tree where name = 'corosync.conf';
+sqlite> .quit
+
+
+#3. Remove directories
+pmxcfs -l
+rm /etc/pve/corosync.conf
+rm /etc/corosync/*
+rm /var/lib/corosync/*
+#rm -rf /etc/pve/nodes/* #Do this only if you want to delete all nodes
+
+#Dont forget to remove nodes that you dont want from /etc/pve/priv/authorized_keys
+reboot