[SOLVED] Possible IPV6 Only Cluster ?

[fluorfr]

Hello,

I set up a cluster in dual stack IPV4/IPV6. I would no longer like to use IPV4 on the cluster so I would like Corosync to be only in IPV6.

In corosync i have :

node {
    name: test1
    nodeid: 1
    quorum_votes: 1
    ring0_addr: XX.XX.XX.XX <= IPv4
    ring1_addr: 2001:xxxx:xxxx:xxxx <= IPv6
  }

What's the right way to do it?

My idea is :

- Modify ring0 by ring0_addr: 2001:xxxx:xxxx:xxxx <= IPv6
- Increase Corosync version config
- Restart corosync service

It's the good method ?

Thanks.

 

[mira]

Please follow the steps in our docs on how to edit the corosync config. [0]
Replacing the IP sounds fine. Please make sure not to have HA enabled when doing the change.
If HA is enabled and you make a mistake, all nodes will fence themselves.


[0] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#_corosync_configuration

 

[fluorfr]

Ok, thanks

Ok that partly worked. But the migration continues to use ipv4 I don't understand why.

 

[hvisage]

pe

Ok, thanks

Ok that partly worked. But the migration continues to use ipv4 I don't understand why.

Perhaps /etc/hosts still have IPv4?
start to remove the IPv4 addresses from the nodes and see if/how they stay up/go-down to see if there isn't a config you missed somewhere?

 

[fluorfr]

Yes that was it I deleted the IPV4 and it seems OK everything works in IPV6.

 

[jsabater]

@fluorfr, would you happen to have the procedure you followed to set up such cluster with IPv4 and IPv6 and, if so, to share it? At the moment I am investigating how to do it.