how to start cmcld daemon

[Deeos]

Hi experts,

I have manually killed cmcld daemon process. can any body tell me how to start cmcld daemon?


Thanks in advance for your support

[Mel Burslan]

I have not dealt with serviceguard clusters for a long time but last I remember, when cmcld daemon dies or becomes unresponsive due to this or that reason, it is enough for the node to induce a TOC and shut itself down immediately. When you killed this daemon, did the server take a nose dive and go down or nothing happened ? If it did not die, is there another cmcld running on this system currently ?

For whatever reason, your cluster status might be a little iffy as it stands right now and a complete cluster restart may put things back in order.

But again this information is coming from 3+ years ago. There might be other enhancements in the newer releases of MCSG. So take my words with a grain of salt.

[Suraj K Sankari]

Hi,
Try to run "cmruncl"
if the deamon not start then its a good idea to reboot the server.
Suraj

[Emil Velez]

normally the system will panic if you kill the cmcld

Suggest that you reboot.. ServiceGuard is not stable at this point.

[Shukor]

Hi Deeos,

cmcld daemon starts after command "cmruncl". To manually restart the daemon without rebooting server, just cmhaltcl and then cmruncl as shown below.

root[cmcluster] # cmruncl -v
Successfully started $SGLBIN/cmcld on node1.
Successfully started $SGLBIN/cmcld on node2.
cmruncl : Waiting for cluster to form.....
cmruncl : Cluster successfully formed.
cmruncl : Check the syslog files on all nodes in the cluster
cmruncl : to verify that no warnings occurred during startup

Regards,
Shukor

[Ivan Krastev]

Don't stop the cluster with cmhaltcl, just use cmrunnode to start cluster services on that node. See man page for more - http://www.unix.com/man-page/All/1m/cmrunnode/


regards,
ivan

[Ismail Azad]

Hi,

cmruncl does start the cmcld daemon and other essential daemons for MCSG. Never try to manaully start this daemon as the cm* commands properly apply and configure the cluster in a way SG can understand which involves the distribution of the binary file and applying of configuration to name a few. Do not manually kill cmcld , cmlvmd and other critical daemons and do not try to MANUALLY RESTART them.

Regards
Ismail Azad

[sarfaraj ahmad]

Hi,
cmruncl will start the cmcld daemon.

NOTE:
The cmruncl command can only be used when the cluster is not running, that is, when none of the nodes is running the cmcld daemon.



Regards,

[Stephen Doud]

cmcld is the main Serviceguard daemon. After the cluster has formed, killing cmcld will cause a TOC (memory dump followed by a system reboot) because the Serviceguard kernel hang detection system was not terminated by a graceful exit of cmcld.

cmruncl starts cmcld on all nodes in the cluster (if none are running Serviceguard), or on specific nodes listed when "-n ..." is added to the cmruncl command. There should only be one instance of cmcld running.

To make a node join cluster operations already in progress, use cmrunnode rather than cmruncl.