[pve-devel] update to corosync 2.0 in proxmox 4, upgrade without shutdown vms ?

[Alexandre DERUMIER]

Ok great !


>>We need to test if that works... 

I'll happy to help for testing.




----- Mail original -----
De: "dietmar" <dietmar at proxmox.com>
À: "aderumier" <aderumier at odiso.com>, "pve-devel" <pve-devel at pve.proxmox.com>
Envoyé: Jeudi 26 Février 2015 07:53:47
Objet: Re: [pve-devel] update to corosync 2.0 in proxmox 4, upgrade without shutdown vms ?

> I'm seeing that you currently looking to upgrade corosync to v2 for jessie. 
> 
> AFAIK, corosync v2 it not compatibile with v1, 
> So all nodes should be upgraded at the same time. 

yes. 

> But as we update to jessie too, I wonder how to do it, without reboot all 
> hosts at the same time, 
> so killing all vms. 

I thing an update could work this way: 

1.) cman and rgmanager are dead, so first step would be to remove rgmanager. 

2.) After that, we can try to (automatically) create a cluster configuration 
for the new system: 

/etc/corosync/authkey (copy to all nodes) 
/etc/pve/corosync.conf 

Then update node by node 

3.) find another solution for HA 

We need to test if that works...