Apache ocf resource failing to start in cluster.

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Environment

SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise High Availability Extension 11 Service Pack 4

Situation

Setting up Apache2 with apache ocf resource script and it fails to start.
Error: Failed to access httpd status page

Logs:
lrmd[18156]: notice: executing - rsc:Apache action:start call_id:29404
apache(Apache)[4060]: ERROR: Failed to access httpd status page.
apache(Apache)[4060]: INFO: Attempting graceful stop of apache PID 4595
apache(Apache)[4060]: INFO: apache stopped.
lrmd[18156]: notice: Apache_start_0:4060:stderr [ ocf-exit-reason:Failed to access httpd status page. ]

Resolution

Need to add the "mod_status_module" to the Apache configuration file.
/etc/apache2/loadmodule.conf
LoadModule status_module /usr/lib64/apache2-prefork/mod_status.so

Optional.
You can also just configure the lsb startup script in the cluster to stop / start / monitor the service instead of using the OCF script.

Cause

The default apache configuration does not load the status_module and the ocf:heartbeat:apache script relies on the statusurl to monitor whether apache2 service is responding to requests.

Additional Information

Script location: ocf:heartbeat:apache
/usr/lib/ocf/resource.d/heartbeat/apache

crm shell command to see more information about resource agent
# crm ra info apache

Example of cluster configuration primitive
primitive apache2 apache \
        params statusurl="http://localhost/server-status" \
        op start interval=0 timeout=40 \
        op stop interval=0 timeout=60 \
        op monitor interval=10 timeout=20 \
        meta target-role=Started

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