282 lines
6.4 KiB
Bash
Executable File
282 lines
6.4 KiB
Bash
Executable File
#!/bin/bash
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#
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# Resource script for haproxy daemon
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#
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# Description: Manages haproxy daemon as an OCF resource in
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# an High Availability setup.
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#
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# HAProxy OCF script's Author: Russki
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# Rsync OCF script's Author: Dhairesh Oza <odhairesh@novell.com>
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# License: GNU General Public License (GPL)
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#
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#
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# usage: $0 {start|stop|status|monitor|validate-all|meta-data}
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#
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# The "start" arg starts haproxy.
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#
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# The "stop" arg stops it.
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#
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# OCF parameters:
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# OCF_RESKEY_binpath
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# OCF_RESKEY_conffile
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# OCF_RESKEY_extraconf
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#
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# Note:This RA requires that the haproxy config files has a "pidfile"
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# entry so that it is able to act on the correct process
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##########################################################################
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# Initialization:
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OCF_RESKEY_conffile_default="/etc/haproxy/haproxy.cfg"
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OCF_RESKEY_pidfile_default="${HA_RSCTMP}/${__SCRIPT_NAME}/${__SCRIPT_NAME}.pid"
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OCF_RESKEY_binpath_default="/usr/sbin/haproxy"
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: ${OCF_RESKEY_conffile=${OCF_RESKEY_conffile_default}}
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: ${OCF_RESKEY_pidfile=${OCF_RESKEY_pidfile_default}}
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: ${OCF_RESKEY_binpath=${OCF_RESKEY_binpath_default}}
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: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/resource.d/heartbeat}
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. ${OCF_FUNCTIONS_DIR}/.ocf-shellfuncs
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USAGE="Usage: $0 {start|stop|status|monitor|validate-all|meta-data}";
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##########################################################################
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usage()
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{
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echo $USAGE >&2
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}
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meta_data()
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{
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cat <<END
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<?xml version="1.0"?>
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<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
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<resource-agent name="haproxy">
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<version>1.0</version>
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<longdesc lang="en">
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This script manages haproxy daemon
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</longdesc>
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<shortdesc lang="en">Manages an haproxy daemon</shortdesc>
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<parameters>
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<parameter name="binpath">
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<longdesc lang="en">
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The haproxy binary path.
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For example, "/usr/sbin/haproxy"
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</longdesc>
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<shortdesc lang="en">Full path to the haproxy binary</shortdesc>
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<content type="string" default="/usr/sbin/haproxy"/>
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</parameter>
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<parameter name="conffile">
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<longdesc lang="en">
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The haproxy daemon configuration file name with full path.
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For example, "/etc/haproxy/haproxy.cfg"
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</longdesc>
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<shortdesc lang="en">Configuration file name with full path</shortdesc>
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<content type="string" default="/etc/haproxy/haproxy.cfg" />
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</parameter>
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<parameter name="extraconf">
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<longdesc lang="en">
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Extra command line arguments to pass to haproxy.
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For example, "-f /etc/haproxy/shared.cfg"
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</longdesc>
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<shortdesc lang="en">Extra command line arguments for haproxy</shortdesc>
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<content type="string" default="" />
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</parameter>
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</parameters>
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<actions>
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<action name="start" timeout="20s"/>
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<action name="stop" timeout="20s"/>
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<action name="reload" timeout="20s"/>
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<action name="monitor" depth="0" timeout="20s" interval="60s" />
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<action name="validate-all" timeout="20s"/>
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<action name="meta-data" timeout="5s"/>
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</actions>
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</resource-agent>
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END
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exit $OCF_SUCCESS
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}
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get_variables()
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{
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CONF_FILE="${OCF_RESKEY_conffile}"
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COMMAND="${OCF_RESKEY_binpath}"
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if [ -n "${OCF_RESKEY_pidfile}" ]; then
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PIDFILE=$(grep -v "#" ${CONF_FILE} | grep "pidfile" | sed 's/^[ \t]*pidfile[ \t]*//')
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else
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PIDFILE="${OCF_RESKEY_pidfile}"
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fi
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}
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haproxy_status()
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{
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get_variables
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# check and make PID file dir
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local PID_DIR="$( dirname ${PIDFILE} )"
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if [ ! -d "${PID_DIR}" ] ; then
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ocf_log debug "Create pid file dir: ${PID_DIR}"
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mkdir -p "${PID_DIR}"
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# no need to chown, root is user for haproxy
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chmod 755 "${PID_DIR}"
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fi
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if [ -n "${PIDFILE}" -a -f "${PIDFILE}" ]; then
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# haproxy is probably running
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# get pid from pidfile
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PID="`cat ${PIDFILE}`"
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if [ -n "${PID}" ]; then
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# check if process exists
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if ps -p "${PID}" | grep -q haproxy; then
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ocf_log info "haproxy daemon running"
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return $OCF_SUCCESS
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else
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ocf_log info "haproxy daemon is not running but pid file exists"
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return $OCF_NOT_RUNNING
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fi
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else
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ocf_log err "PID file empty!"
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return $OCF_ERR_GENERIC
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fi
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fi
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# haproxy is not running
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ocf_log info "haproxy daemon is not running"
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return $OCF_NOT_RUNNING
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}
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haproxy_start()
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{
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get_variables
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# if haproxy is running return success
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haproxy_status
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retVal=$?
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if [ $retVal -eq $OCF_SUCCESS ]; then
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exit $OCF_SUCCESS
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elif [ $retVal -ne $OCF_NOT_RUNNING ]; then
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ocf_log err "Error. Unknown status."
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exit $OCF_ERR_GENERIC
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fi
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# run the haproxy binary
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"${COMMAND}" ${OCF_RESKEY_extraconf} -f "${CONF_FILE}" -p "${PIDFILE}"
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if [ $? -ne 0 ]; then
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ocf_log err "Error. haproxy daemon returned error $?."
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exit $OCF_ERR_GENERIC
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fi
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ocf_log info "Started haproxy daemon."
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exit $OCF_SUCCESS
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}
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haproxy_reload()
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{
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get_variables
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if haproxy_status; then
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# get pid from pidfile
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PID="`cat ${PIDFILE}`"
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# reload haproxy binary replacing the old process
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"${COMMAND}" ${OCF_RESKEY_extraconf} -f "${CONF_FILE}" -p "${PIDFILE}" -sf "${PID}"
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if [ $? -ne 0 ]; then
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ocf_log err "Error. haproxy daemon returned error $?."
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exit $OCF_ERR_GENERIC
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fi
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else
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ocf_log info "Haproxy daemon is not running. Starting it."
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haproxy_start
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fi
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}
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haproxy_stop()
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{
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get_variables
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if haproxy_status ; then
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PID="`cat ${PIDFILE}`"
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if [ -n "${PID}" ] ; then
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kill "${PID}"
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if [ $? -ne 0 ]; then
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kill -SIGKILL "${PID}"
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if [ $? -ne 0 ]; then
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ocf_log err "Error. Could not stop haproxy daemon."
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return $OCF_ERR_GENERIC
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fi
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fi
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ocf_log debug "Delete pid file: ${PIDFILE} with content ${PID}"
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rm -f "${PIDFILE}"
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fi
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fi
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ocf_log info "Stopped haproxy daemon."
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exit $OCF_SUCCESS
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}
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haproxy_monitor()
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{
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haproxy_status
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}
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haproxy_validate_all()
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{
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get_variables
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if [ -n "$OCF_RESKEY_binpath" -a ! -x "$OCF_RESKEY_binpath" ]; then
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ocf_log err "Binary path $OCF_RESKEY_binpath does not exist."
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exit $OCF_ERR_ARGS
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fi
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if [ -n "$OCF_RESKEY_conffile" -a ! -f "$OCF_RESKEY_conffile" ]; then
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ocf_log err "Config file $OCF_RESKEY_conffile does not exist."
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exit $OCF_ERR_ARGS
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fi
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if grep -v "^#" "$CONF_FILE" | grep "pidfile" > /dev/null ; then
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:
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else
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ocf_log err "Error. \"pidfile\" entry required in the haproxy config file by haproxy OCF RA."
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return $OCF_ERR_GENERIC
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fi
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return $OCF_SUCCESS
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}
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#
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# Main
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#
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if [ $# -ne 1 ]; then
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usage
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exit $OCF_ERR_ARGS
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fi
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case $1 in
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start) haproxy_start
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;;
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stop) haproxy_stop
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;;
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reload) haproxy_reload
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;;
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status) haproxy_status
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;;
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monitor) haproxy_monitor
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;;
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validate-all) haproxy_validate_all
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;;
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meta-data) meta_data
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;;
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usage) usage; exit $OCF_SUCCESS
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;;
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*) usage; exit $OCF_ERR_UNIMPLEMENTED
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;;
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esac
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