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Re: [Linux-cluster] cman can not start



Fadia Al-Marei wrote:

Dear All

I have two redhat Enterprise Linux 4 AS servers with shared storage , I try to cluster them , I download the cluster suite packages on the two servers and it ok, when I start to add nodes on the cluster the problems start , in the first server I add the two nodes start the ccsd service and the cman service and every thing is ok, when I ftp the file to the second server and try to start the ccsd and the cman services I face the problems and the log file show the errors.

Aug 28 10:28:02 CluServ2 cman: startup succeeded
Aug 28 10:28:07 CluServ2 kernel: CMAN: sendmsg failed: -13
Aug 28 10:28:12 CluServ2 kernel: CMAN: sendmsg failed: -13
Aug 28 10:28:12 CluServ2 kernel: CMAN: No functional network interfaces, leaving cluster
Aug 28 10:28:12 CluServ2 kernel: CMAN: sendmsg failed: -13
Aug 28 10:28:12 CluServ2 kernel: CMAN: we are leaving the cluster.
Aug 28 10:28:12 CluServ2 kernel: WARNING: dlm_emergency_shutdown
Aug 28 10:28:12 CluServ2 kernel: WARNING: dlm_emergency_shutdown
Aug 28 10:28:12 CluServ2 ccsd[31038]: Cluster manager shutdown. Attemping to reconnect... Aug 28 10:28:33 CluServ2 ccsd[31038]: Unable to connect to cluster infrastructure after 30 seconds.

What is the problem and how can I solve it.


Hi Fadia,

Sounds like the cluster manager can't communicate between the nodes.
Check to make sure the iptables firewall isn't filtering out messages between the nodes, (i.e. temporarily turn it off and try again). If it is iptable interfering, you may need to enable some ports in iptables. See http://sources.redhat.com/cluster/faq.html#iptables

Also, check to make sure that broadcast messages work properly between the nodes.

Regards,

Bob Peterson
Red Hat Cluster Suite


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