[Cluster-devel] skipping unused services, cman_tool join -A

[Ryan O'Hara]

On Wed, Jan 27, 2010 at 02:49:25PM -0600, David Teigland wrote:
> On Fri, Sep 25, 2009 at 02:27:52PM -0500, David Teigland wrote:
> > To avoid loading+running services that you don't use (e.g. to avoid bugs
> > crashing the system from a service you're not using)
> > 
> > add to cluster.conf
> > 
> > <service name="corosync_cman" ver="0"/>
> > <service name="openais_ckpt" ver="0"/>
> > 
> > run cman_tool join -A
> > 
> > (or set CMAN_JOIN_OPTS env var)
> 
> Currently cman_tool loads the list of services defined by
> "openaisserviceenablestable", which is clm, evt, ckpt, msg, lck, tmr.
> 
> I suggest that by default cman_tool only load the services that we use,
> namely ckpt (and cman of course).  If someone wants to use another of the
> services, they can use cluster.conf <service> to load it.
> 
> I don't think this suggestion went over very well last time I brought it
> up, but recently the trend has been shifting toward narrowing our exposure
> to things we've tested... so I'm tossing it out one more time.
> 
> Dave

I completely agree. Regardless of which services are supported, tech
preview, etc., we should only load the service(s) that are actually
used by cluster suite.

Ryan