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#!/bin/sh
#
# Resource script for haproxy daemon
#
# Description: Manages haproxy daemon as an OCF resource in
# an High Availability setup.
#
# HAProxy OCF script's Author: Russki
# Rsync OCF script's Author: Dhairesh Oza <odhairesh@novell.com>
# License: GNU General Public License (GPL)
#
#
# usage: $0 {start|stop|status|monitor|validate-all|meta-data}
#
# The "start" arg starts haproxy.
#
# The "stop" arg stops it.
#
# OCF parameters:
# OCF_RESKEY_binpath
# OCF_RESKEY_conffile
# OCF_RESKEY_extraconf
#
# Note:This RA requires that the haproxy config files has a "pidfile"
# entry so that it is able to act on the correct process
##########################################################################
# Initialization:
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/resource.d/heartbeat}
. ${OCF_FUNCTIONS_DIR}/.ocf-shellfuncs
USAGE="Usage: $0 {start|stop|status|monitor|validate-all|meta-data}";
##########################################################################
usage()
{
echo $USAGE >&2
}
meta_data()
{
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="haproxy">
<version>1.0</version>
<longdesc lang="en">
This script manages haproxy daemon
</longdesc>
<shortdesc lang="en">Manages an haproxy daemon</shortdesc>
<parameters>
<parameter name="binpath">
<longdesc lang="en">
The haproxy binary path.
For example, "/usr/sbin/haproxy"
</longdesc>
<shortdesc lang="en">Full path to the haproxy binary</shortdesc>
<content type="string" default="/usr/sbin/haproxy"/>
</parameter>
<parameter name="conffile">
<longdesc lang="en">
The haproxy daemon configuration file name with full path.
For example, "/etc/haproxy/haproxy.cfg"
</longdesc>
<shortdesc lang="en">Configuration file name with full path</shortdesc>
<content type="string" default="/etc/haproxy/haproxy.cfg" />
</parameter>
<parameter name="extraconf">
<longdesc lang="en">
Extra command line arguments to pass to haproxy.
For example, "-f /etc/haproxy/shared.cfg"
</longdesc>
<shortdesc lang="en">Extra command line arguments for haproxy</shortdesc>
<content type="string" default="" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="20s"/>
<action name="stop" timeout="20s"/>
<action name="monitor" depth="0" timeout="20s" interval="60s" />
<action name="validate-all" timeout="20s"/>
<action name="meta-data" timeout="5s"/>
</actions>
</resource-agent>
END
exit $OCF_SUCCESS
}
get_pid_and_conf_file()
{
if [ -n "$OCF_RESKEY_conffile" ]; then
CONF_FILE=$OCF_RESKEY_conffile
else
CONF_FILE="/etc/haproxy/haproxy.cfg"
fi
PIDFILE="`grep -v \"#\" ${CONF_FILE} | grep \"pidfile\" | sed 's/^[ \t]*pidfile[ \t]*//'`"
if [ "${PIDFILE}" = '' ]; then
PIDFILE="/var/run/${OCF_RESOURCE_INSTANCE}.pid"
fi
}
haproxy_status()
{
if [ -n "$PIDFILE" -a -f "$PIDFILE" ]; then
# haproxy is probably running
PID=`cat $PIDFILE`
if [ -n "$PID" ]; then
if ps -p $PID | grep haproxy >/dev/null ; then
ocf_log info "haproxy daemon running"
return $OCF_SUCCESS
else
ocf_log info "haproxy daemon is not running but pid file exists"
return $OCF_NOT_RUNNING
fi
else
ocf_log err "PID file empty!"
return $OCF_ERR_GENERIC
fi
fi
# haproxy is not running
ocf_log info "haproxy daemon is not running"
return $OCF_NOT_RUNNING
}
haproxy_start()
{
# if haproxy is running return success
haproxy_status
retVal=$?
if [ $retVal -eq $OCF_SUCCESS ]; then
exit $OCF_SUCCESS
elif [ $retVal -ne $OCF_NOT_RUNNING ]; then
ocf_log err "Error. Unknown status."
exit $OCF_ERR_GENERIC
fi
if [ -n "$OCF_RESKEY_binpath" ]; then
COMMAND="$OCF_RESKEY_binpath"
else
COMMAND="/usr/sbin/haproxy"
fi
$COMMAND $OCF_RESKEY_extraconf -f $CONF_FILE -p $PIDFILE;
if [ $? -ne 0 ]; then
ocf_log err "Error. haproxy daemon returned error $?."
exit $OCF_ERR_GENERIC
fi
ocf_log info "Started haproxy daemon."
exit $OCF_SUCCESS
}
haproxy_stop()
{
if haproxy_status ; then
PID=`cat $PIDFILE`
if [ -n "$PID" ] ; then
kill $PID
if [ $? -ne 0 ]; then
kill -SIGKILL $PID
if [ $? -ne 0 ]; then
ocf_log err "Error. Could not stop haproxy daemon."
return $OCF_ERR_GENERIC
fi
fi
rm $PIDFILE 2>/dev/null
fi
fi
ocf_log info "Stopped haproxy daemon."
exit $OCF_SUCCESS
}
haproxy_monitor()
{
haproxy_status
}
haproxy_validate_all()
{
if [ -n "$OCF_RESKEY_binpath" -a ! -x "$OCF_RESKEY_binpath" ]; then
ocf_log err "Binary path $OCF_RESKEY_binpath does not exist."
exit $OCF_ERR_ARGS
fi
if [ -n "$OCF_RESKEY_conffile" -a ! -f "$OCF_RESKEY_conffile" ]; then
ocf_log err "Config file $OCF_RESKEY_conffile does not exist."
exit $OCF_ERR_ARGS
fi
if grep -v "^#" "$CONF_FILE" | grep "pidfile" > /dev/null ; then
:
else
ocf_log err "Error. \"pidfile\" entry required in the haproxy config file by haproxy OCF RA."
return $OCF_ERR_GENERIC
fi
return $OCF_SUCCESS
}
#
# Main
#
if [ $# -ne 1 ]; then
usage
exit $OCF_ERR_ARGS
fi
case $1 in
start) get_pid_and_conf_file
haproxy_start
;;
stop) get_pid_and_conf_file
haproxy_stop
;;
status) get_pid_and_conf_file
haproxy_status
;;
monitor)get_pid_and_conf_file
haproxy_monitor
;;
validate-all) get_pid_and_conf_file
haproxy_validate_all
;;
meta-data) meta_data
;;
usage) usage
exit $OCF_SUCCESS
;;
*) usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac