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Add node to cluster

After a new installation of a Proxmox server, proceed as follows to add the node to an existing cluster:

1. Adjust the /etc/hosts file to use the internal IP’s for your hostname. It is also recommended to enter the cluster with the internal IP as well:

127.0.0.1 localhost.localdomain localhost
192.168.5.1 proxmox1.sampledomain.ch promox1 pvelocalhost
192.168.5.2 proxmox2.sampledomain.ch proxmox2

2. On the node, execute the following command to add the node to the cluster:

pvecm add

To cluster a Proxmox server execute the following command: pvecm create

No error message may appear. Possible solutions for errors can be found at https://pve.proxmox.com/wiki/Separate_Cluster_Network#Troubleshooting