[Linux-HA] configuring CTS - (Was: Wrong includes when using colocations with groups)

[Dejan Muhamedagic]

On Wed, Oct 17, 2007 at 11:10:51PM +0200, Marian Neubert wrote:
> Dave Blaschke schrieb:
> 
> >>BTW: how do i configure the CTS correctly?
> >Ideally you'll want to run CTS from a third machine - the test exerciser 
> >- that monitors the behavior of the two nodes in the cluster.  The ha.cf 
> >and heartbeat version should be the same on all three machines, and 
> >syslog-ng should be setup to send messages to the exerciser.
> >>when i explicitely enable stonith-testing with the command:
> >>
> >>python ./CTSlab.py -v2 --stonith yes --standby yes 5 > /tmp/cts_output 
> >>2>&1 &
> >>
> >>then none of these tests are executed (see attached logfile).
> >You did enable stonith tests, but tests are chosen randomly from all 
> >runnable tests, so with only 5 tests your chances of running stonith are 
> >small.  If you want to run just one type of test, you can use the 
> >--choose option to do so (i.e. --choose stonith).
> >>
> >>stonith is enabled and configured to reboot failed nodes. a 
> >>stonith-clone with "apcmastersnmp" is configured, running and working 
> >>(tested earlier by hand). startup-fencing is enabled.
> >CTS comes with it's own built-in configuration (it generates its own 
> >CIB), and the stonith device it uses is ssh.   So even if you have 
> >apcmastersnmp setup correctly, it will not be used by CTS.
> 
> before writing about this issue i've already set up everything according 
> to the cts-README-file. Also the tests are already running BUT i didn't 
> know that the cts is for testing the cluster-software only, not my 
> previously written cluster-configuration with all its resources and 
> constraints...
> 
> that's not really clear in the README-file (except the ssh-plugin for 
> StonithdTest). Also i didn't know that the tests are run randomly on the 
> nodes based on the given iterations.
> 
> IIRC the option "--choose" isn't documented in the README - are there 
> sources for a complete description what the CTS do in detail and how to 
> configure all these details? Is there also a way to test the cluster 
> with my own resources configured?

Yes, you can also run the CTS with your configuration. You can
even try to supply your own stonith mechanism using
--stonith-type type
and
--stonith-args name=value ...

It's probably true that not all options are documented. CTS is
mainly used to test the heartbeat software by the developers. Of
course, you're very welcome to test it yourself :)

Thanks,

Dejan


> Regards
> /Marian
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