02-16-2010
Comparing Cluster Members
Does anyone know of a good utility that will do a binary compare of all the files on two cluster members? We are looking for something we can run on a monthly batch basis to monitor for configuration drift between AIX/HACMP and Solaris/VCS cluster member pairs, use as an ad hoc diagnostic tool when an app runs fine on one cluster node but not the other, or to compare test and prod systems to figure out why a problem cannot be reproduced in the test environment.
I realize tight system management procedures are the best preventative, but when you have eight sysadmins with root (sudo) access and another dozen people with varying access to app directories, some type of drift is inevitable. We need something that can at least help us prove that the machines are identical so we can direct diagnostic efforts back to the application.
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LEARN ABOUT HPUX
cmhaltcl
cmhaltcl(1m) cmhaltcl(1m)
NAME
cmhaltcl - halt a high availability cluster
SYNOPSIS
cmhaltcl [-f] [-v]
DESCRIPTION
cmhaltcl causes all nodes in a configured cluster to stop their cluster daemons, optionally halting all packages or applications in the
process.
To stop a cluster, a user must either be superuser(UID=0), or have an access policy of FULL_ADMIN allowed in the cluster configuration
file. See access policy in cmquerycl(1).
This command will halt all the daemons on all currently running systems. If the user only wants to shutdown a subset of daemons, the
cmhaltnode command should be used instead.
Options
cmhaltcl supports the following options:
-f Force the cluster to shutdown even if packages or group members are currently running. This will cause the packages and group
members to be halted. If a package halt fails, the cluster halt will also fail.
-v Verbose output will be displayed.
RETURN VALUE
cmhaltcl returns the following value:
0 Successful completion.
1 Command failed.
EXAMPLES
Halt the cluster daemons:
cmhaltcl
AUTHOR
cmhaltcl was developed by HP.
SEE ALSO
cmquerycl(1m), cmhaltnode(1m), cmruncl(1m), cmrunnode(1m), cmviewcl(1m).
Requires Optional Serviceguard Software cmhaltcl(1m)