cluster issue

[himacs]

Hi Admin,

B.11.23

We have 2 node act-passive cluster.To deploy the patch we halted passive node from the cluster.Now we are not able to join the node back.

Below are the error details.

uaedxbpdctakp02:/etc/cmcluster>cmrunnode -v uaedxbpdctakp02
cmrunnode: Validating network configuration...
Gathering network information
Network interface lan2 on node uaedxbpdctakp01 does not have an IP address,
but the configuration file specified 10.11.4.152.
This may be caused by changes in the network configuration,
or by a local switch.
IP subnets don't match, interface lan2 on uaedxbpdctakp01
IP netmasks don't match, interface lan2 on uaedxbpdctakp01
Interface lan3 on uaedxbpdctakp01 has an IP address on it
(10.11.4.152), but the configuration file doesn't have it.
This may be caused by a local switch or changes in the network configuration.
Beginning network probing (this may take a while)
Completed network probing
lan2 on node uaedxbpdctakp01 cannot be configured in the cluster
because it does not have an IP address, and it is not a standby lan for any other lan.
Failed to evaluate network
cmrunnode: Failed to validate the network configuration as reported above but will try to start the nodes anyway.
cmrunnode: Network validation complete
cmrunnode: Validating cluster lock disk .... Done
cmrunnode: Cluster is already running on "uaedxbpdctakp02".

From error details we can make out that lan failover happenb between lan2 and lan3 in active node.
Below are the lan details of active node

NODE_NAME uaedxbpdctakp01
NETWORK_INTERFACE lan0
STATIONARY_IP 10.248.8.10
NETWORK_INTERFACE lan2
HEARTBEAT_IP 10.11.4.152
NETWORK_INTERFACE lan1
NETWORK_INTERFACE lan3

Package is running fine in active node.

can i move the ip back to lan2 when package is active..

And one more option,can i modify the lan details in cluster file according to current
situation when cluster/pkg is running..

Please guide me ..

Regards
himacs

[Chandrahasa s]

Hi,

Provide below outputs,
cmviewcl -v
cat cluster configaration file
netstat -nvr

These outputs may help to find exact issue.

Chandra

[Viktor Balogh]

Hi himacs,

> can i move the ip back to lan2 when package is active..

yes, you _should_ move back the ip to lan2 in order to attach the inactive node back.

>And one more option,can i modify the lan details in cluster file according to current
situation when cluster/pkg is running..

AFAIK for a cluster config modification all the nodes must be up an running. So I would rather find out why the IP was switched to the standby interface on the active node, and make it switch back.

Maybe the failure is already repaired, but the NETWORK_AUTO_FAILBACK parameter in your cluster config is set to false, and that's why it didn't fail back. See p.367 "Changing the Cluster Networking Configuration while the Cluster Is Running" in

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c02437444/c02437444.pdf