Le 03/12/2012 03:27, Andrew Beekhof a écrit :
On Sat, Dec 1, 2012 at 1:07 AM, Florian Crouzat
<gen...@floriancrouzat.net> wrote:
Le 29/11/2012 22:10, Andrew Beekhof a écrit :
Not so fast :-)
crm_mon supports
-E, --external-agent=value
A program to run when resource operations take place.
-e, --external-recipient=value A recipient for your program
(assuming you want the program to send something to someone).
so without recompiling, you can call a script - possibly it could call
something that sends out snmp alerts ;-)
Oh, great!
I had a hard time understanding these two options and how they relate, you
helped me on IRC but I'll reply here so there is a trace in case someone is
also interested.
Thanks for that. I really need to make some time to document this.
If you have a suggestion as where this documentation should go, I might
propose a patch. I'm not sure crm_mon --help or man crm_mon can be more
verbose than they already are. Giving a full example and mentioning the
ENV variables to use in the external-agent etc is too long for these
brief doc.
What do you think ?
Here is my resource:
primitive ClusterMon ocf:pacemaker:ClusterMon \
params user="root" update="30" extra_options="-E
/usr/local/bin/foo.sh -e 192.168.1.2" \
op monitor on-fail="restart" interval="10" \
meta target-role="Started"
clone ClusterMon-clone ClusterMon
Here is the content of my script:
$ cat /usr/local/bin/foo.sh
#!/bin/bash
(
echo CRM_notify_recipient $CRM_notify_recipient
echo CRM_notify_node $CRM_notify_node
echo CRM_notify_rsc $CRM_notify_rsc
echo CRM_notify_task $CRM_notify_task
echo CRM_notify_desc $CRM_notify_desc
echo CRM_notify_rc $CRM_notify_rc
echo CRM_notify_target_rc $CRM_notify_target_rc
echo CRM_notify_status $CRM_notify_status
echo
) > /tmp/pacemaker.log
Finally, this is the resulting log of one execution. The script is executed
on each cluster operation/transition (monitor, stop, start) etc.
$ cat /tmp/pacemaker.log
CRM_notify_recipient 192.168.1.2
CRM_notify_node scoresby2.lyra-network.com
CRM_notify_rsc F
CRM_notify_task monitor
CRM_notify_desc ok
CRM_notify_rc 0
CRM_notify_target_rc 0
CRM_notify_status 0
One just has to do some scripting with these variables to match its needs.
In my case, I guess I want a SNMP trap whenever CRM_notify_rc != 0.
Thanks
--
Florian Crouzat
--
Cheers,
Florian Crouzat
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