> On 3 Dec 2014, at 6:55 pm, Ulrich Windl <ulrich.wi...@rz.uni-regensburg.de> > wrote: > >>>> Andrew Beekhof <and...@beekhof.net> schrieb am 03.12.2014 um 06:45 in >>>> Nachricht > <6da1e43b-b83a-4441-9fb0-88bfe409d...@beekhof.net>: > >>> On 1 Dec 2014, at 7:46 pm, Ulrich Windl <ulrich.wi...@rz.uni-regensburg.de> >> wrote: >>> >>> Hi! >>> >>> I'd like to change a resource's configuration, but don't want a restart of >> the resource. That is, I want the configuration to be effective the next >> time >> the resource is started. >>> >>> I know in general it doesn't make sense, but for cLVM it does: Per default >> debug logging is on and it floods the syslog with junk. >>> If I want to turn off debug logging, I'll have to pass an extra parameter >>> to >> clvmd, or I could do "clvmd -d0 -C" to fix the problem until next resource >> start. >>> >>> As cLVMd is clones to all nodes in the cluster, a configuration change >>> would >> effectively halt the whole cluster (all users of cLVM). I want to avoid >> that. >> As you can see, I can change the running resources, and I can configure the >> resources to be fine next time they restart. >>> >>> So all I need is way to prevent a restart of clvmd when changing its >> resource configuration. >> >> You could make it in a scratch copy of the cib, note the new digests in the >> status section and include those in your update. > > Could you provide some more details, please?
cibadmin -Q > old.xml cibadmin -Q > new.xml CIB_file=new.xml cibadmin -M --xml-text '<whatever you want to change/>' crm_simulate -SX new.xml compare old.xml to new.xml looking for new values for <op restart-digest=.../> and <op reload-digest=.../> now change the real cluster and include changes to restart-digest and reload-digest > >> Alternatively, use maintenance-mode and crm_resource -C > > I don't understand: in maintenance mode I cannot start/stop anything, right? You don't need to. Just make the change, then use crm_resource -C to erase the status section, the probes will run with the new set of parameters. At that point, it should be safe to turn maintenance mode off again. > So the changes to the CIB will just be delayed until management mode is off > again, right? What is the role of "crm_resource -C"? Does "cleanup" make CRM > forget that it has to restart resources when the management mode is turned > off again? > > Regards, > Ulrich > > >> _______________________________________________ >> Linux-HA mailing list >> Linux-HA@lists.linux-ha.org >> http://lists.linux-ha.org/mailman/listinfo/linux-ha >> See also: http://linux-ha.org/ReportingProblems > > > > > _______________________________________________ > Linux-HA mailing list > Linux-HA@lists.linux-ha.org > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
