Cluster networking question

M

Morcin42

New Member
Proxmox Subscriber
Feb 25, 2025
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Hi,
Currently we have 2 virtual PMG 9.0.6 nodes in a cluster, each node has 2 nic's, one with a local (192.168.*.*) ip, and one with a public IP. Currently the cluster is configured over the private subnet.
We now want to add a third node to the cluster, but this node is in a different location and has no access to the private ip space.
  • Is it possible to just join this node to the cluster using the public IP of the master node, and will this function correctly?
  • And if not, is there a way to change the current cluster to use the public network interfaces instead of the private ones?
 
We eventually created a test cluster to just test the different questions and solutions. What we ended up doing that worked perfectly:

  • Made sure all nodes were able to communicate over port 22 and 8006 on the public IP
  • updated /etc/hosts and changed the private ip for the node hostname to the public IP
  • Changed the private ip to the public ip in /etc/pmg/cluster.conf on both nodes
  • Rebooted node 1, and then rebooted node 2 when 1 was back online
  • Validated the cluster worked as expected
  • add the new node with the public ip
 
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