HPUX 11.0 MC/Serviceguard "cmgetconf" command

[LG Porter]

I have three N4000 class servers running HPUX 11.0 with MCSG 11.09 installed configured in as "active-active" configuration. The "cmviewcl" command reveals the cluster name as "edi_online" with pkga_oracle running on node A, pkgb running on node B and pkgc_oracle running on node C. The cluster was previously configured by another source at the time of original installation and the cluster ascii configuration /etc/cmcluser/cmclconf.ascii is not available, only the binary file. Questions: A) Can the "cmgetconf" command be used to reconstruct a high availability cluster configuration file for this cluster? B) If so, what would be the correct syntax to use for this three node cluster? Thanks

[Michael Steele_2 · Accepted solution]

Use the following command to store a current copy of the existing cluster configuration in a temporary file:

# cmgetconf -C /tmp/temp.asciicmgetconf -v -c mycluster temp.ascii

# cmquerycl -n n1 -n n2 -C cmclconf.ascii

Combine temp.ascii with cmclconf.ascii

cmcheckconf and cmapplyconf

[Michael Steele_2]

Ooops, typo:

# cmgetconf -C /tmp/temp.ascii
-or-
# cmgetconf -v -c mycluster temp.ascii

[Pramod_4]

You can create a ascii cluster configuration file from the existing cmclconfig binary file by using cmgetconf command.

# cmgetconf > /etc/cmcluster/cluster.ascii

Remove all lines starting with "Warning" from /etc/cmcluster/cluster.ascii file.

If you modify any thing in that ascii file, do the following to enure that the ascii file is has correct syntax:

# cmcheckconf -C /etc/cmcluster/cluster.ascii

If you have made any changes, do a cmmaplyconf:

#cmapplyconf -C /etc/cmcluster/cluster.ascii

[Sanjay_6]

Hi,

Use,

cmgetconf [-v] [-c cluster_name] [-p package_name] [output_filename]

# cmgetconf cluster.ascii

# cmgetconf -p (pkg_name) (config.pkg1_name)

Verify that the conf file is good.

# cmcheckconf -C cluster.ascii

Hope this helps.

Regds

[LG Porter]

Sanjay, Michael

In this case, since this cluster has three different packages running..that is, a different package on each node in the cluster, each package would need to be specified as part of the command syntax, right? Thanks

[Michael Steele_2]

Absolutely. You've got three different package configuration files and control files right?

'package.cntl' and 'package.conf' files are bound together in pairs. For this command use the 'package.conf' file.

[Stephen Doud]

The following script automates the process.


#!/sbin/sh
# This script automates the recreation of the cluster and package
# configuration files based on the cluster binary present on the server
# If the cluster binary is out of date with the current hardware
# configuration, the configuration files may not succeed a cmcheckconf
# or cmapplyconf.

PATH=/sbin:/usr/sbin:/usr/bin
export PATH
print "Reconstituting the cluster configuration file. This may take some time..."
cmgetconf /etc/cmcluster/CLUSTER.ASCII 1>/dev/null
print "Saved it at /etc/cmcluster/CLUSTER.ASCII"
for PKG in `cmviewconf | grep "package name" | cut -f 4,4` ; do
cmgetconf -p $PKG /etc/cmcluster/$PKG.config
print "Recreated package $PKG configuration file at /etc/cmcluster/$PKG.config"
done
else
print "No cluster binary on this server."
exit
=============

sd