Adding a 2nd node to the cluster shows one node offline

Support
1

NethServer Version: 8

I‘m about to set up a 2nd node to my cluster hosted somewhere else. I iunstalled Rocky Linux 9, then Nethserver with the Standard procedure. Trying join the cluster seems to work but on the leader Nodes Cluster management it says Node is offline.

at the hosters Server the node is running, I can connect via ssh.

There is no way to remove the offline.

What can I do now?

2

Sometimes a reboot can help.

What about the relevant port? Is it open in the firewall? I think it’s port 55820 by default.

1 Like
3

Nope, reboot did not change a thing :frowning:

4

Are the worker node requirements fulfilled? See System requirements — NS8 documentation

5

As far as I can see: yes. I checked

  • nameresolution: from the worker-node shell I could ping the cluster with its FQDN
  • Https: could open a connection with curl and retrieved the certificate
  • vpn udp: could esteblish a connection
  • ssh runs on standard port
6

Are the other sides VPN IPs pingable from the nodes? You can find out the VPN IPs on the nodes page.

grafik
grafik2179×950 101 KB

7

there is only the leader node

grafik
grafik881×365 7.58 KB

no, I could not ping the leader node from the worker node via the vpn adress.

there is a vpn network adaper on each node, both with a ip in the same subnet

leader: 10.5.4.1/32
worker 10.5.4.3/32

trying to ping the worker (after I found its ip in the shell):

ping 10.5.4.3
PING 10.5.4.3 (10.5.4.3) 56(84) bytes of data.
Von 10.5.4.1 icmp_seq=1 Zielhost nicht erreichbar
ping: sendmsg: Es ist eine Zieladresse notwendig
8

Maybe you need to setup a port forwarding on your router/firewall for UDP port 55820?

1 Like