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#!/bin/sh
#
# OMD (Open Monitoring Distribution) OCF RA.
# Checks the status of a given OMD site.
#
# - Use in a Pacemaker/DRBD environment for OMD -
# for more information see http://blog.simon-meggle.de
# Copyright 2011 (C) by Simon Meggle
#
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like. Any license provided herein, whether implied or
# otherwise, applies only to this software file. Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
#######################################################################
# Initialization:
. ${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs
# OMD binary
OMD=`which omd`
# If only your active Node runs OMD sites, change OMDDATA directly to the
# mount point /mnt/omddata. This ensures that DRBD is mounted before trying
# to start any clustered OMD site.
# Otherwise, if your cluster should also run a OMD site on the inactive node to
# monitor OMD sites on the active node, you need OMDDATA set to /opt/omd. Symlinks
# within this directory will point to another directory.
OMDDATA='/opt/omd'
#OMDDATA='/mnt/omddata'
#######################################################################
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="OMD" version="0.1">
<version>0.1</version>
<longdesc lang="en">
This is a Resource Agent for managing OMD (Open Monitoring Distribution, www.omdistro.org) sites.
</longdesc>
<shortdesc lang="en">OMD resource agent</shortdesc>
<parameters>
<parameter name="site" unique="1" required="1">
<longdesc lang="en">
Name of the OMD site to check.
</longdesc>
<shortdesc lang="en">
OMD Site name
</shortdesc>
<content type="string" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="30" />
<action name="stop" timeout="30" />
<action name="monitor" timeout="10" interval="10" depth="0" start-delay="0" />
<action name="reload" timeout="15" />
<action name="meta-data" timeout="5" />
<action name="validate-all" timeout="5" />
</actions>
</resource-agent>
END
}
#######################################################################
# don't exit on TERM, to test that lrmd makes sure that we do exit
trap sigterm_handler TERM
sigterm_handler() {
ocf_log info "They use TERM to bring us down. No such luck."
return
}
omd_usage() {
cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}
Expects to have a fully populated OCF RA-compliant environment set.
END
}
omd_start() {
omd_monitor
if [ $? = $OCF_SUCCESS ]; then
return $OCF_SUCCESS
fi
ocf_log info "Starting OMD site ${OCF_RESKEY_site}..."
$OMD start $OCF_RESKEY_site
}
omd_stop() {
omd_monitor
ocf_log info "Stopping OMD site ${OCF_RESKEY_site}..."
$OMD stop $OCF_RESKEY_site
return $OCF_SUCCESS
}
omd_monitor() {
# Precondition: check if OMD directories are present (/opt/omd).
# Otherwise, OMD would never run.
if [ ! -d "${OMDDATA}/apache" ] || [ ! -d "$OMDDATA/sites" ] || [ ! -d "${OMDDATA}/versions" ] ; then
ocf_log err "${OMDDATA} is not mounted on this node / OMD is not running."
return ${OCF_NOT_RUNNING}
else
if [ ! -f ${OMD} ] ; then
ocf_log err "Cannot find OMD binary ${OMD}!"
return ${OCF_ERR_GENERIC}
else
STATE=`${OMD} status ${OCF_RESKEY_site} | grep "Overall state"`
case ${STATE} in
"Overall state: running") ocf_log debug "OMD site ${OCF_RESKEY_site} is running properly."
return ${OCF_SUCCESS}
;;
"Overall state: stopped") ocf_log debug "OMD site ${OCF_RESKEY_site} is stopped."
return ${OCF_NOT_RUNNING}
;;
"Overall state: partially running") ocf_log err "ERROR: OMD site ${OCF_RESKEY_site} is running only partially!"
return ${OCF_ERR_GENERIC}
;;
*) ocf_log err "ERROR: State of OMD site ${OCF_RESKEY_site} is unknown!"
return ${OCF_ERR_GENERIC}
esac
fi
fi
}
omd_validate() {
if [ ! -f ${OMD} ] ; then
ocf_log err "Cannot find OMD binary ${OMD}!"
return ${OCF_ERR_GENERIC}
else
return $OCF_SUCCESS
fi
}
: ${OCF_RESKEY_CRM_meta_interval=0}
: ${OCF_RESKEY_CRM_meta_globally_unique:="true"}
case $__OCF_ACTION in
meta-data) meta_data
exit $OCF_SUCCESS
;;
start) omd_start;;
stop) omd_stop;;
monitor) omd_monitor;;
reload) ocf_log err "Reloading..."
omd_start
;;
validate-all) omd_validate;;
usage|help) omd_usage
exit $OCF_SUCCESS
;;
*) omd_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
rc=$?
ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
exit $rc

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Mon, Feb 24, 8:03 PM (8 h, 54 m)
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OMD (5 KB)

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