[SOLVED] Node connection failed after joining cluster

[suriv]

I have strange problem. After the node joins to cluster it's no longer directly accessible.

I have 2 nodes. A (10.30.1.2) and B (10.30.1.3 - fully fresh install).

On node A I'm creating the cluster using web panel https://10.30.1.2:8006. Next I'm joining the cluster using node B web panel https://10.30.1.3:8006. Right after joining i can see the node B in cluster management by accessing the node A web panel but I'm no longer able to directly access the node B web panel (long loading and connection timeout at the end).

I have tried to remove the node from cluster by using the steps from the https://pve.proxmox.com/wiki/Cluster_Manager#_remove_a_cluster_node - "Separate a Node Without Reinstalling". Now the node A is still accessible and cluster do not contain node B but node B is still not accessible and moreover I'm not able to connect to that node via ssh and even ping fails (I need to use KVM to log in).

Any idea what's happen? I have tried many times and the result is the same.

 

[Moayad]

Hi,

Are your network configurations in both nodes ok? - did you see anything in the Syslog/journalctl during the issue occurred?

 

[suriv]

I have found the solution in middle of the yesterday night and had no time to answer. The reason was that the firewall on cluster config was set to "on" and node after joining the cluster had cleared the local firewall configuration so all packets was dropped - default policy DROP. Configuring the node firewall after joining to cluster fixed the problem.

 

[gerdw]

I have found the solution in middle of the yesterday night and had no time to answer. The reason was that the firewall on cluster config was set to "on" and node after joining the cluster had cleared the local firewall configuration so all packets was dropped - default policy DROP. Configuring the node firewall after joining to cluster fixed the problem.

That saved my day. Thanks for sharing your solution! G.