troubleshoot hang application
hi,
if an application hangs and it is part of an service group,how i troubleshoot things?
first should i stop the service group hagrp -offline?if this not works then should i try to stop each resource hares -offline?if this not wotks then i kill -9 every process of this application.
should i take out the floating ip?and unmount if trhe above not work?
then i start everything with hagrp -online?
normally the application resides on SAN luns not on local disk from server.right?
in this case if there are some issues with dg,volumes or plexes and i freeze this group,then the application could hang.right?
tnx a lot.
Same question as your post of about 11 months ago?
If your application is hung then freeze VCS and fix your application. Once you have fixed your application then probe resource in VCS and if it reflects the correct state, then job done. If after fixing application the resource for the application is stuck in an onlining or offlining state, then copy resource, delete it, and then recreate it. If the issue is hung diskgroup, then same applies, freeze VCS and fix DG.
Mike
