Monitoring pacemaker with url trigger external agent
I have a HA setup, which now the only resource configured is Heartbeat with Active/Passive Configuration. Both running Debian 7, 64-bit in the cloud.
Now i want to trigger an URL with the information from the Pacemaker when the resource changes. The URL is pointed to some server which will send E-mail/an SMSalert ect.. Let the URL triggered be http://example.com/pacemaker.php?CRM_notify_node=node1&CRM_notify_rsc=blah
Since Configuring all the stuff in Pacemaker is lil tedious. So all the processing or sending E-mail/alerts is put into the webpage.
So, how to configure the Pacemaker to call the URL.
Thanks
You can configuring Notifications via External-Agent adding external script to process cluster changes.
For example configure ClusterMon to execute an external-agent:
primitive ClusterMon ocf:pacemaker:ClusterMon \
params user="root" update="30" extra_options="-E /path/to/pcmk_curl_helper.sh" \
op monitor on-fail="restart" interval="10"
clone ClusterMon-clone ClusterMon \
meta target-role="Started"
Script pcmk_curl_helper.sh
:
#!/bin/bash
# Generates alerts for any failing monitor operation or
# for any operations (even successful) that are not a monitor
# env vars: ${CRM_notify_recipient} ${CRM_notify_rsc} ${CRM_notify_rsc} ${CRM_notify_desc} ${CRM_notify_status} ${CRM_notify_rc} ${CRM_notify_target_rc}
if [[ ${CRM_notify_rc} != 0 && ${CRM_notify_task} == "monitor" ]] || [[ ${CRM_notify_task} != "monitor" ]] ; then
/usr/bin/curl -sS http://example.com/pacemaker.php?CRM_notify_node=${CRM_notify_node}&CRM_notify_rsc=${CRM_notify_rsc} > /dev/null
fi
exit 0
Alternatively you can start crm_mon as a background daemon and use same script to process cluster changes.
Eg.
crm_mon -d -i 30 -p /tmp/ClusterMon_ResourceMonitor.pid -E /path/to/pcmk_curl_helper.sh
I hope this help.