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Operating Systems AIX AIX Hardware Migration w/ HACMP...Advice Needed Post 302971778 by bakunin on Monday 25th of April 2016 02:29:38 PM
Old 04-25-2016
Quote:
Originally Posted by uzair_rock
I thought about that, but here is the issue;

Both networks have restrictions. I cannot put old IP (172.X) on the new hardware as it connect to the new network and vice versa, that is what makes it so complicated.
In this case you will have to have a downtime of some sorts. Alas, there seems to be no way around that because you need to (newly) configure HACMP on your new system and this means some downtime when you make the transition. Fortunately this downtime can be minimised pretty much by good planning.

Furthermore you haven't said anything about involved OS and HACMP versions. I suppose you will have to update at least one of them (most probably both) too.

I'd investigate the following procedure (you might have to add some things, this is just a first idea):

- Take an mksyb from the running systems, create the appropriate LPARs on the new system and try to install it from the mksysb image without any data (just the rootvg).

- Now do all the updates (start with OS, then the HACMP software) on the new systems

- get a single LUN from your SAN and configure your new cluster with the same topology as the old one, just with one test-VG on the single LUN. Use this to test your zoning, (basic) cluster setup and other details.

- Finally, after preparing your new cluster with new addresses on the new hardware you need the downtime: get the SAN people to zone the old data-LUNs to your new hardware so that the disks are seen from your cluster nodes, create the new cluster config for the imported VGs and start. You might want to add the DNS names of the old cluster service IPs as aliases to the new addresses so that the transition becomes smoother for the clients.

I hope this helps.

bakunin
 

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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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