01-31-2009
Quote:
Originally Posted by
filosophizer
[...]3 nodes (A, B, C) all configured to startup with HACMP [...]
Don't know whether I got you correctly. I have never seen an admin who wanted his clusters to start up at os boot. In case you are new to HACMP you might not be in an ideal situation for making such a cluster design decision. You can configure HACMP to start up with the os but if you can take some piece of advice: don't do it. IMHO the potential problems by far outweigh the potential adavantages.
Quote:
Originally Posted by
filosophizer
I would like to configure HACMP in such a way:
1) Node B should startup first. After the cluster successfully starts up and mounts all the filesystems, then
2) Node A, and Node C should startup ![...]
HACMP is very flexible here, it lets you script everything and you can control when a command is run by pre or post events or by the start/stop scripts. You could create an ssh key with empty password distribute it accordingly to the nodes you want to access and then script the start of the other clusters. Following your description a good place for the startup command might be at the bottom of the RG start script. If you mean to power on the servers themselves you need to script HMC or CSM commands to name two possibilities.
8 More Discussions You Might Find Interesting
1. AIX
I was wondering if any one have any guides or documention regarding Oracle and SAP on AIX 6.1 + PowerHA setups in one guide step by step
Thanks (2 Replies)
Discussion started by: h@foorsa.biz
2 Replies
2. AIX
This post just as a follow-up for thread https://www.unix.com/aix/115548-hacmp-5-4-aix-5300-10-not-working.html: 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... (0 Replies)
Discussion started by: shockneck
0 Replies
3. AIX
Hi
What is the procedure to upgrade the MQ from 6 to 7 in aix hacmp cluster. Do i need to bring down the cluster
services running in both the nodes and then give #smitty installp in both the nodes separately. Please assist... (0 Replies)
Discussion started by: samsungsamsung
0 Replies
4. AIX
Hi,
I have a IBM Power series machine that has 2 VIOs and hosting 20 LPARS.
I have two LPARs on which GPFS is configured (4-5 disks)
Now these two LPARs need to be configured for HACMP (PowerHA) as well.
What is recommended? Is it possible that HACMP can be done on this config or do i... (1 Reply)
Discussion started by: aixromeo
1 Replies
5. AIX
As i have updated a lot of HACMP-nodes lately the question arises how to do it with minimal downtime. Of course it is easily possible to have a downtime and do the version update during this. In the best of worlds you always get the downtime you need - unfortunately we have yet to find this best of... (4 Replies)
Discussion started by: bakunin
4 Replies
6. AIX
Hi,
A customer I'm supporting once upon a time broke their 2 cluster node database servers so they could use the 2nd standby node for something else. Now sometime later they want to bring the 2nd node back into the cluster for resilance. Problem is there are now 3 VG's that have been set-up... (1 Reply)
Discussion started by: elcounto
1 Replies
7. AIX
Hi all,
I remember way back in some old environment, having the HA cluster services not being started automatically at startup, ie. no entry in /etc/inittab.
I remember reason was (taken a 2 node active/passive cluster), to avoid having a backup node being booted, so that it will not... (4 Replies)
Discussion started by: zaxxon
4 Replies
8. AIX
I have troubles making clstat work. All the "usual suspects" have been covered but still no luck. The topology is a two-node active/passive with only one network-interface (it is a test-setup). The application running is SAP with DB/2 as database. We do not use SmartAssists or other gadgets.
... (8 Replies)
Discussion started by: bakunin
8 Replies
LEARN ABOUT SUSE
ipcluster
IPCLUSTER(1) IPCLUSTER(1)
NAME
ipcluster - IPython parallel computing cluster control tool
SYNOPSIS
ipcluster {piexec,local,mpirun,pbs,ssh} [options]
DESCRIPTION
ipcluster is a control tool for IPython's parallel computing functions.
IPython cluster startup. This starts a controller and engines using various approaches. Use the IPYTHONDIR environment variable to change
your IPython directory from the default of .ipython or _ipython. The log and security subdirectories of your IPython directory will be used
by this script for log files and security files.
POSITIONAL ARGUMENTS
The first positional argument should be one of: {mpiexec, local, mpirun, pbs, ssh}, which are the available cluster types.
For detailed help on each, type "ipcluster TYPE --help". Briefly:
local run a local cluster
mpirun run a cluster using mpirun (mpiexec also works)
mpiexec run a cluster using mpiexec (mpirun also works)
pbs run a pbs cluster
ssh run a cluster using ssh, should have ssh-keys setup
OPTIONS
-h, --help
show help message and exit
EXAMPLE
ipcluster local -n 4
This command will start 4 IPython engines on the local computer.
SEE ALSO
ipython(1),ipcontroller(1),ipengine(1)
AUTHOR
ipcluster is a tool that ships with IPython, created by the IPython Development Team.
This manual page was written by Stephan Peijnik <debian@sp.or.at>, for the Debian project (but may be used by others). Modified by Fer-
nando Perez <Fernando.Perez@berkeley.edu> for inclusion in IPython.
October 28, 2008 IPCLUSTER(1)