Rejoining a removed node into a cluster
Sometimes, it may be necessary to rejoin a removed node back into the Proxmox cluster. The node may have been removed by mistake or the node may have become out of order due to hardware failure and needs to be joined back in with same IP address. If the node is going to be rejoined after a clean install of Proxmox on it, then simply follow the steps from the Adding nodes to a cluster recipe, shown earlier in this chapter. If the node is rejoined with same Proxmox installation, then it can be joined forcefully or gracefully. To ensure guaranteed operations, clean the installation of Proxmox on the node. Only then is rejoining recommended.
Getting ready
Similar to adding a node, rejoining also must be done from the CLI. Log in as the root into the Proxmox node that is being rejoined.
How to do it…
If reinstalling of Proxmox on the node is not an option, then to rejoin a removed node in the same cluster, graceful joining is highly recommended over forceful...
