[Linux-HA] configuring CTS - (Was: Wrong includes when using
colocations with groups)
Marian Neubert
linux-ha at tesla-crew.de
Wed Oct 17 15:10:51 MDT 2007
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?
Regards
/Marian
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