will existing cluster stack work?

lastguru

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Jan 7, 2011
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Hi,

First of all, thanks for the great product!

I am looking forward with much excitement to the upcoming Proxmox 2.0. However there is one worry for me: the cluster stack. Right now I am using corosync+pacemaker configuration myself between two proxmox 1.9 machines and they work great. I have written some scripts and resource managers for this thing and I am pretty happy with the result. However, the upcoming Proxmox 2.0 will have the same stuff preinstalled, and, i assume, preconfigured...

The question is: whether Proxmox 2.0 will interfere with my current config? I assume I will setup my servers as a cluster in 2.0, and my config right now provides HA for OpenVZ, which, as far as I understand, 2.0 does not provide, so it gives me hope that both configurations (mine and proxmox) will be able to coexist? Or am I mistaken?

Thanks,
Dmitry
 

dietmar

Proxmox Staff Member
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Apr 28, 2005
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Well, the 2.0 cluster stack configures corosync and cman for you. And we plan to use rgmanager. Anyways, if you have a working resource agent it should be easy to adopt that (but i do not know you exact setup).
 

lastguru

Member
Jan 7, 2011
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won't pacemaker conflict with cman/rgmanager? I've never had them on the same machine, so I have no idea, although I found one (single) reference from a developer that they *should* be able to coexist :D (and a warning in the manual that they shouldn't be used together). the thing is that i have a resource agent, which, i suppose is for pacemaker (and i don't see any problem with pacemaker for now), so i will need to rewrite it?
 

lastguru

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Jan 7, 2011
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well, yeah, i can understand that - i am using proxmox in a custom and unsupported configuration to achieve my custom goals of dual (active-active) openvz failover on a shared storage, and of course i cannot force you to use any other solution instead of the one you have chosen. i was just asking for pointers, whether you think that my existing config will be able to coexist with proxmox, or i will need to rework either of them...
 

dietmar

Proxmox Staff Member
Staff member
Apr 28, 2005
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Austria
www.proxmox.com
i was just asking for pointers, whether you think that my existing config will be able to coexist with proxmox, or i will need to rework either of them...
Well, AFAIK there was some activity on pacemaker to make it work with cman - but I do not know the actual status of that work.

Do you you a complex pacemaker configuration or one without many dependencies?
 

lastguru

Member
Jan 7, 2011
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it has only drbd and filesystem as dependencies - everything else is done within the resource monitor or in other scripts.
 

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