[PVE-User] Nodes lose connection to master

[Martin Maurer]

From: pve-user-bounces at pve.proxmox.com [mailto:pve-user-bounces at pve.proxmox.com] On Behalf Of Steve Weber
Sent: Mittwoch, 06. Februar 2013 14:43
To: pve-user at pve.proxmox.com
Subject: [PVE-User] Nodes lose connection to master

Hello,

we have a cluster of three nodes:
                mox-110 (slave)
                mox-114 (master)
                mox-118 (slave)
[Martin Maurer]
There are no master and slaves in Proxmox VE 2.x.

Yesterday morning all three nodes shown in syslog: "crit: cpg_send_message failed: 9".
After opening the WebGUI of one node after the other, only the active node was shown
as online the others were shown as offline.

At evening I restarted the master and the error disappeared in his log.
At the slaves the syslog entry "crit: cpg_send_message failed: 9" was visible again.
But the master recognized changes at the pve-worker processes.

è I restarted the slaves and everything went back to normal.

The problem resulted in my opinion by a malfunction of the pve-cluster service.
[Martin Maurer]
I assume it's a network communication problem. Any firewall on your hosts? Is IP multicast supported in your network environment?
Martin

Is there any way to prevent this from happening again?

Greetings
Steve

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