Karl,
On Wed, 11 Apr 2007, Karl Hanzel wrote:
Hi Art -
I'm looking into writing my own OCF resource agent script for an LDM
server...
I wrote a script that monitors the LDM realservers for addition/removal
from the cluster and a script or two for the HA part. I can send you some
scripts if you'd like... let me know.
I'm guessing that your script(s) aren't quite what i'm looking for, but i
could be wrong.
In the linux-HA version-2 way of things, OCF Resource Agents are those found
in /usr/lib/ocf/resource.d/{provider}/ ... similar to an init script that you
might find in /etc/init.d/, but with the enhanced functionality (monitor, &
meta-data functions in addition to start, stop, & status). Is that what you
have? If so, then yes, i'd be very interested to have a look-see.
No, I don't have anything using the new OCF-style. I do have one script
in /etc/ha.d/resource.d which I suspect is a similar location. It just
switches the ipvs state between master/backup on failovers and notifies me
when this occurs:
#!/bin/csh -x
if( $1 == "start" ) then
# Make this director a multi-cast master for sending state to backup directors
# Stop any running backup ipvs_syncd
/sbin/ipvsadm --stop-daemon backup
# ipvsadm V1.0.8 does not want the "backup" argument
#/sbin/ipvsadm --stop-daemon
# Start the master ipvs_syncd
/sbin/ipvsadm --start-daemon master --mcast-interface eth0
/bin/mail -s "`hostname` assuming master role" person << EOD
.
EOD
endif
if( $1 == "stop" ) then
# Make this director a multi-cast backup for receiving state from a master
director
# Stop any running master ipvs_syncd
/sbin/ipvsadm --stop-daemon master
# ipvsadm V1.0.8 does not want the "master" argument
#/sbin/ipvsadm --stop-daemon
# Start the backup ipvs_syncd
/sbin/ipvsadm --start-daemon backup --mcast-interface eth0
/bin/mail -s "`hostname` assuming backup role" person << EOD
.
EOD
endif
Art
Thanks!
Karl
*----->
Arthur A. Person
Research Assistant, System Administrator
Penn State Department of Meteorology
email: person@xxxxxxxxxxxxx, phone: 814-863-1563
