[HELP] cman_tool: Cannot open connection to cman, is it running ?

[semoetz]

Hello guys, please help me with this one,

First, i've cases like this post:

http://forum.proxmox.com/threads/9466-2-node-cluster-second-node-gone-now-i-cannot-delnode-the-2nd-node-cause-of-no-quoru

and before i solved the problem with that, my proxmox get the other error:

cman_tool: Cannot open connection to cman, is it running ?

it happend to the master and slave (proxmox1 as a master) and (proxmox2 as a slave).
Both of nodes has the same error when i start to pvecm status.

This is the error messages when i start cman services (via web interface):

Starting cluster:
Checking if cluster has been disabled at boot... [ OK ]
Checking Network Manager... [ OK ]
Global setup... [ OK ]
Loading kernel modules... [ OK ]
Mounting configfs... [ OK ]
Starting cman... Cannot find node name in cluster.conf
Unable to get the configuration
Cannot find node name in cluster.conf
cman_tool: corosync daemon didn't start Check cluster logs for details
[FAILED]
TASK ERROR: command '/etc/init.d/cman start' failed: exit code 1

Here's my cluster.conf:

<?xml version="1.0"?>
<cluster name="GSPCLUSTER1" config_version="4">


  <cman keyfile="/var/lib/pve-cluster/corosync.authkey">
  </cman>


  <clusternodes>


  </clusternodes>


</cluster>

Is there a way to remove cluster or re-create the cluster in VE 2? and how to to this? because i'm not find this in VE 2 wiki.

thx.

 

[tom]

there is no master/slave in Proxmox VE 2.0. instead of recreating you need to find the cause of the issue.

does your network supports IP multicast? See http://pve.proxmox.com/wiki/Multicast_notes

 

[semoetz]

thx for your repply tom,

a little bit problem revealed;

the issue is : i lost my node name in cluster.conf.

in proxmox1 i used ccs_tool command below to add the node online (because i cannot edit directly to cluster.conf, with "permission denied" error msg).

ccs_tool addnode -v 1 -n 1 proxmox1 -o /etc/pve/cluster.conf

and so with proxmox2:

ccs_tool addnode -v 1 -n 1 proxmox2 -o /etc/pve/cluster.conf

Now, i can start cman services.


The Other problem appear :
when i want to add the node to cluster, i've got the error in both of my proxmox:

authentication key already exists

any idea ??