How to "update" a node IP address ?

[Ponytech]

I had set up a VPN between 2 servers to make a cluster. pvecm status says:

Version: 6.2.0
Config Version: 8
Cluster Name: ponytech
Cluster Id: 28530
Cluster Member: Yes
Cluster Generation: 4784
Membership state: Cluster-Member
Nodes: 2
Expected votes: 2
Total votes: 2
Node votes: 1
Quorum: 2  
Active subsystems: 5
Flags: 
Ports Bound:  
Node name: server2
Node ID: 1
Multicast addresses: 239.192.111.225 
Node addresses: 10.0.0.11

The IP address 10.0.0.11 is not correct. My server has the address 10.0.0.2 but I could not find a way to "update" it.
Is there a solution excluding a server reboot ?

Thanks.

 

[Ponytech]

No one knows ? I have to reboot my server ?

 

[anthonysomerset]

node addresses iirc is the IP's of the other nodes in the cluster? - actually no its the server address that you ran it on - and its the IP it has detected cluster comms is happening on

are you by any chance using an openvpn tunnel? - you may need to use bridging/tap mode to get the ip to appear right

 

[Ponytech]

Yes I am using OpenVPN with bridging/tap.

Actually the 10.0.0.11 address is the address the server got when it first booted. Later I updated OpenVPN to give it a fixed IP (not from the dynamic pool) which is 10.0.0.2. But now my cluster is broken, probably because of that.
So is there any way to tell the cluster a node has a new IP address?

Thanks a lot.

 

[m.ardito]

I think you could have to remove the "old IP" node and readd it as the "new IP" node.
just don't forget to update /etc/hosts

Marco

 

[Ponytech]

I think you could have to remove the "old IP" node and readd it as the "new IP" node.
just don't forget to update /etc/hosts

Unfortunately I can't remove the node because the cluster is kind of broken :

# pvecm delnode [COLOR=#333333]server2[/COLOR]
cluster not ready - no quorum?

Maybe I can try to re-assign the server its old IP, delete the node, change IP again and re-add the node.

 

[m.ardito]

guess you have 2 nodes...
you can temporarily alter the needed quorum with "pvecm expected <N>"
if you have 2 nodes, <N> should be 1
(currently is 2: if there is no quorum cluster is "locked")

then remove old ip node
then add new ip node
?
the quorum should be reset when new node joins

Marco

 

[Ponytech]

Yes i have 2 nodes.

Even after changing the expected quorum I can't remove the node.
I also tried to restart services :

# service cman restart
Stopping cluster: 
   Stopping dlm_controld... 
[FAILED]

I think I'm good for a server reboot...

Thanks for your help.

 

[wahmed]

Am i correct to assume you have server nodes in remote locations? Just wandering why you are setting up with VPN.

 

[Ponytech]

Am i correct to assume you have server nodes in remote locations? Just wandering why you are setting up with VPN.

Yes the 2 servers are located on 2 different data centers / network.


I had finally rebooted my server to get things back to normal
Thanks everybody for your help