topic Identifying active node in Operating System - HP-UX

Identifying active node

dictum9 — Tue, 09 Jan 2007 11:48:46 GMT

What's the easiest way to identify if a node is the active node of the cluster?

I am trying cmviewcl but it gives lots of output, do I have to parse it?

Re: Identifying active node

Yarek — Tue, 09 Jan 2007 12:02:50 GMT

Hi,

cmviewcl -n

Re: Identifying active node

Steven E. Protter — Tue, 09 Jan 2007 12:41:59 GMT

Shalom,

Depending on the application, both nodes can be active at the same time. Packages can run on whichever node they are configured to run on or on the failover node if the proper command issued.

cmviewcl -v

Will give you run state and node of all packages, active, running or failed.

SEP

Re: Identifying active node

Denver Osborn — Tue, 09 Jan 2007 12:54:14 GMT

This will show which package is running on which node...

cmviewcl -l package |awk '{print $5, $1}'

-denver

Re: Identifying active node

Denver Osborn — Tue, 09 Jan 2007 12:56:11 GMT

d'oh. hit submit before reading. that output won't show the state.

anyhow, use "cmviewcl -l package" if you want to know which package is RUNNING on which node. :)

-denver

Re: Identifying active node

Geoff Wild — Tue, 09 Jan 2007 13:40:45 GMT

Yes, you have to parse it.

I usually do:

cmviewcl |grep MyPackage |awk '{print $5}'

Rgds...Geoff

Re: Identifying active node

Carsten Krege — Wed, 10 Jan 2007 04:15:27 GMT

In SG A.11.17 (supported with HPUX 11iv2 and upcoming 11iv3) a new option to cmviewcl has been added to allow command line parsing.

The cmviewcl man page says:

-f format Select the output format to display. The format
parameter may be one of the following values:

table This option displays a human readable
tabular output format. This is the
default output format if no -f is
specified on the command line.

line This option displays a machine parsable
output format. Data items are displayed,
one per line, in a way that makes them
easy to manipulate with tools such as
grep(1) and awk(1). This option also
shows additional information not
available in the table output format.
Some of these are detailed under
Specialized Line Output. Please refer to
cmviewcl(5) for further details.

Here is an example:

# cmviewcl -f line -l package | grep -e status
package:PKG3|status=up
package:PKG1|status=up

Carsten