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Operating Systems AIX HACMP 5.4.1 Two-Node-Cluster-Configuration-Assistant fails Post 302488230 by shockneck on Sunday 16th of January 2011 06:56:22 AM
Old 01-16-2011
HACMP 5.4.1 Two-Node-Cluster-Configuration-Assistant fails

This post just as a follow-up for thread HACMP 5.4 with AIX 5300-10 not working: there was a bug in the clcomdES that would cause the Two-Node-Cluster-Configuration-Assistant to fail even with a correct TCP/IP adapter setup. That affected HACMP 5.4.1 in combinatin with (at least) AIX 5.3 from TL6 to TL12 (did not try older oslevels but found a post that could imply the problem did not exist at and below TL5) and RSCT 2.4.13.0

Problem with HACMP 5.4.1 shows as
Code:
Configuring cluster topology.
ERROR: Unable to use communication interface 'xxxxxxxxxx'.

For each of the above invalid communication interfaces listed,
please check that the owning node is running the clcomdES subsystem,
and that the /usr/es/sbin/cluster/etc/rhosts file is properly configured.
Also, check /var/hacmp/clcomd/clcomd.log logfile on remote node for possible errors.
[...]

Using an empty or a manually edited cluster rhosts does not make any difference but leads to the same error.

Now, this is fixed with (at least) SP10 for HACMP 5.4.1 (did not try older HA Service Packs). I could not find an APAR with a suitable description. Maybe it was related to IZ70306: CLCOMD HACMPNETWORK MALLOC MEMORY LEAK CAUSES CLCOMDES FAILURES which dates to 2010-09-06. I am not sure about that as during my tests I never saw the 5901 ODM error mentioned in the description but it also says that the clcomdES dies after "few verification invocations" and there are verification checks during Assistant run and the bug caused an incomplete cluster rhosts setup which led me to identify clcomdES as the culprit.
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clsetup(1CL)						 Sun Cluster Maintenance Commands					      clsetup(1CL)

NAME
clsetup - configure Sun Cluster interactively SYNOPSIS
/usr/cluster/bin/clsetup -V /usr/cluster/bin/clsetup -? /usr/cluster/bin/clsetup [-f logfile] DESCRIPTION
The clsetup command provides the following configuration capabilities, depending on what state the cluster is in when you issue the com- mand. The user must be superuser to run this command. This command has no short form. o When you run the clsetup command at post-installation time, the command performs initial setup tasks, such as configuring quorum devices and resetting the installmode property. If you deselected automatic Quroum Configuration when you created the cluster using either scinstall or the cluster create command, then you must run the clsetup command immediately after the cluster has been installed. Ensure that all nodes have joined the cluster before you run the clsetup command and reset the installmode prop- erty. If you used automatic quorum configuration when you created the cluster, you do not need to run the clsetup command after clus- ter installation. The automatic quorum configuration feature also resets the installmode property of the cluster. You can issue this form of the clsetup command from any node in the cluster. o When you run the clsetup command during normal cluster operation, the scsetup command provides an interactive, menu-driven util- ity to perform cluster configuration tasks. The following are some of the cluster components which this utility administers: o Quorum o Resource groups o Data services o Cluster interconnect o Device groups and volumes o Private hostnames o New nodes o Other cluster properties You can issue this form of the clsetup command from any node in the cluster. o When you run the clsetup command from a node that is in noncluster mode, the clsetup command provides a menu-driven utility for changing and displaying the private IP address range. You must reboot all nodes into noncluster mode before you start this form of the clsetup utility. OPTIONS
The following options are supported: -? --help Prints help information for the command. -f logfile --file logfile Specifies the name of a log file to which commands can be logged. If this option is specified, most command sets generated by clsetup can br run and logged, or just logged, depending on user responses. -V --version Prints the version of the command set. No command line processing will be performed and the command will not enter into its interactive menu. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsczu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
Intro(1CL), cldevicegroup(1CL), clnode(1CL), clquorum(1CL), clreslogicalhostname(1CL), clresourcegroup(1CL), clresourcetype(1CL), clressharedaddress(1CL), cluster(1CL), cltelemetryattribute(1CL) Sun Cluster 3.2 5 May 2006 clsetup(1CL)
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