Cluster start question

[Christopher McCray_1]

I was just called in on a problem, where apparently an electrician who was doing some work in our server room, flipped the wrong switch resulting in our 2-node service guard cluster going down. One of our servers, however is down for the count until an FE can arrive with a new hard drive for us. Can I start the cluster up with just one node? I ask this because I really need to get this up, and I have received warnings about the other server not being available. Thanks in advance for your help.

Chris

[Sridhar Bhaskarla · Accepted solution]

You can be able to start the cluster with only one node. Try

cmruncl -v -n one_node

Either cmruncl or cmrunode will not help.

However, I would suggest you start manually the application by mounting the volume groups and running the start-up scripts.

-Sri

[linuxfan]

Hi,

To start the cluster on only one node, do
cmruncl -v -n node_name

Once you get the disk replaced on the other node, it should join the cluster, if not you may then run cmrunnode.

There is another option of mounting all the filesystems manually and starting your application (this would prevent packages/node failing) but the downside is when the other node is up, you will have to bring down your application and then restart the cluster and your package (more downtime)

-Ramesh

[Christopher McCray_1]

Thank you guys, I figured it out. What can I say? It's late and I wasn't functioning well. But points for you otherwise magic answers forthcoming. Thanks again