topic Re: 3 Node cluster to be modified to two-node in Operating System - HP-UX

3 Node cluster to be modified to two-node

chindi — Tue, 29 Oct 2013 05:30:37 GMT

Hi guys,

We are having a cluster as shown below :

root #/etc/cmcluster >cmviewcl

CLUSTER STATUS
DGE-APPS up

NODE STATUS STATE
vinayak down halted
ekdant up running

PACKAGE STATUS STATE AUTO_RUN NODE
sgb_app_pkg up running enabled ekdant

NODE STATUS STATE
lambodar up running

PACKAGE STATUS STATE AUTO_RUN NODE
ukgb_app_pkg up running enabled lambodar

We want to delete node vinayak from cluster & keep ekdant & lambodar in cluster only .

how do i do it , without taking downtime .

Need to remove all information reg vinayak from cluster setup .

Because when am trying to add new package am getting the folowing error;

root #/etc/cmcluster/mg_ba >cmapplyconf -f -P /etc/cmcluster/mg_ba/mg_ban.conf
Unable to open communications to configuration daemon: No such file or directory
Run script /etc/cmcluster/gb_app_pkg/gb_app_pkg.cntl for package gb_app_pkg
does not exist on node vinayak.

Re: 3 Node cluster to be modified to two-node

bingoarunprasat — Mon, 11 Nov 2013 06:19:19 GMT

I think you made some mistake in removing node. Cluster configuration is not updated in all nodes.

Please follow this procedure and post the results.

Store a current copy of the existing cluster configuration in a temporary file:
# cmgetconf -C temp.ascii

Specify the new set of nodes to be configured (omitting vinayak) and generate a template of the new configuration:
# cmquerycl -C clconfig.ascii -c cluster1 -n ekdant -n lambodar

Edit the file clconfig.ascii to check the information about the nodes that remain in the cluster.
Verify the new configuration:
# cmcheckconf -C clconfig.ascii

Apply the changes to the configuration and send the new binary configuration file to all cluster nodes:
# cmapplyconf -C clconfig.ascii

Hope this help you.

Re: 3 Node cluster to be modified to two-node

chindi — Mon, 11 Nov 2013 12:48:13 GMT

Hi Arun ,

HP from backend is working on it now.

They have asked me to run cmgetconf cluster.ascii & then

cmcheckconf cluster.ascii ,

Its failing at network validation .

Have asked me to check network cable .

Lets see.

Re: 3 Node cluster to be modified to two-node

bingoarunprasat — Wed, 13 Nov 2013 04:15:30 GMT

Hi chindi,

Can you please post the results of cmcheckconf ? So that you can get more accurate answers from this forum.