fuel-library/files/fuel-ha-utils/ocf/ns_ntp

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#!/bin/bash
#
# Resource script for ntp daemon with namespace support
#
# Description: Manages ntp daemon as an OCF resource in
# an High Availability setup inside a namespace
#
# HAProxy OCF script's Author: Mirantis
# License: GNU General Public License (GPL)
#
# usage: $0 {start|stop|restart|status|monitor|validate-all|meta-data}
#
# The "start" arg starts ntp.
#
# The "stop" arg stops it.
#
# OCF parameters:
# OCF_RESKEY_ns
# OCF_RESKEY_conffile
# OCF_RESKEY_pidfile
# OCF_RESKEY_binpath
# OCF_RESKEY_extraconf
#
# Note: This RA requires that the ntp config files has a "pidfile"
# entry so that it is able to act on the correct process
##########################################################################
# Initialization:
OCF_ROOT_default="/usr/lib/ocf"
OCF_RESKEY_ns_default="vrouter"
OCF_RESKEY_conffile_default="/etc/ntp.conf"
OCF_RESKEY_pidfile_default="/var/run/ntpd.pid"
OCF_RESKEY_binpath_default="/usr/sbin/ntpd"
OCF_RESKEY_extraconf_default=""
: ${OCF_ROOT=${OCF_ROOT_default}}
: ${OCF_RESKEY_ns=${OCF_RESKEY_ns_default}}
: ${OCF_RESKEY_conffile=${OCF_RESKEY_conffile_default}}
: ${OCF_RESKEY_pidfile=${OCF_RESKEY_pidfile_default}}
: ${OCF_RESKEY_binpath=${OCF_RESKEY_binpath_default}}
: ${OCF_RESKEY_extraconf=${OCF_RESKEY_extraconf_default}}
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/resource.d/heartbeat}
. ${OCF_FUNCTIONS_DIR}/.ocf-shellfuncs
USAGE="Usage: $0 {start|stop|restart|status|monitor|validate-all|meta-data}";
RUN_IN_NS="ip netns exec $OCF_RESKEY_ns "
if [[ -z $OCF_RESKEY_ns ]] ; then
RUN=''
else
RUN="$RUN_IN_NS "
fi
##########################################################################
usage()
{
echo $USAGE >&2
}
meta_data()
{
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="ntp">
<version>1.0</version>
<longdesc lang="en">
This script manages ntp daemon with namespace support
</longdesc>
<shortdesc lang="en">Manages an ntp daemon inside a namespace</shortdesc>
<parameters>
<parameter name="ns">
<longdesc lang="en">
Name of network namespace.
Should be present.
</longdesc>
<shortdesc lang="en">Name of network namespace.</shortdesc>
<content type="string" default="${OCF_RESKEY_ns_default}"/>
</parameter>
<parameter name="conffile">
<longdesc lang="en">
The ntp daemon configuration file name with full path.
For example, "/etc/ntp/ntp.cfg"
</longdesc>
<shortdesc lang="en">Configuration file name with full path</shortdesc>
<content type="string" default="${OCF_RESKEY_conffile_default}" />
</parameter>
<parameter name="pidfile">
<longdesc lang="en">
The ntp pid file path.
For example, "/var/run/ntp.pid"
</longdesc>
<shortdesc lang="en">Full path to the ntp pid file</shortdesc>
<content type="string" default="${OCF_RESKEY_pidfile_default}"/>
</parameter>
<parameter name="binpath">
<longdesc lang="en">
The ntp binary path.
For example, "/usr/sbin/ntp"
</longdesc>
<shortdesc lang="en">Full path to the ntp binary</shortdesc>
<content type="string" default="${OCF_RESKEY_binpath_default}"/>
</parameter>
<parameter name="extraconf">
<longdesc lang="en">
Extra command line arguments to pass to ntp.
For example, "-f /etc/ntp/shared.cfg"
</longdesc>
<shortdesc lang="en">Extra command line arguments for ntp</shortdesc>
<content type="string" default="${OCF_RESKEY_extraconf_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 $OCF_SUCCESS
}
get_variables() {
CONF_FILE="${OCF_RESKEY_conffile}"
COMMAND="$RUN ${OCF_RESKEY_binpath}"
PIDFILE="${OCF_RESKEY_pidfile}"
}
ntp_status() {
get_variables
if [ -n "${PIDFILE}" -a -f "${PIDFILE}" ]; then
# ntp is probably running
# get pid from pidfile
PID="`cat ${PIDFILE}`"
if [ -n "${PID}" ]; then
# check if process exists
if $RUN ps -p "${PID}" | grep -q ntp; then
ocf_log info "ntp daemon running"
return $OCF_SUCCESS
else
ocf_log info "ntp 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
# ntp is not running
ocf_log info "ntp daemon is not running"
return $OCF_NOT_RUNNING
}
ntp_start()
{
get_variables
# if ntp is running return success
ntp_status
retVal=$?
if [ $retVal -eq $OCF_SUCCESS ]; then
return $OCF_SUCCESS
elif [ $retVal -ne $OCF_NOT_RUNNING ]; then
ocf_log err "Error. Unknown status."
return $OCF_ERR_GENERIC
fi
# run the ntp binary
ocf_run ${COMMAND} ${OCF_RESKEY_extraconf} -u ntp:ntp -p "${PIDFILE}" -g -c ${CONF_FILE}
if [ $? -ne 0 ]; then
ocf_log err "Error. ntp daemon returned error $?."
return $OCF_ERR_GENERIC
fi
ocf_log info "Started ntp daemon."
return $OCF_SUCCESS
}
ntp_stop()
{
get_variables
if ntp_status ; then
PID="`${RUN} 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 ntp daemon."
return $OCF_ERR_GENERIC
fi
fi
rm -f "${PIDFILE}"
fi
fi
ocf_log info "Stopped ntp daemon."
return $OCF_SUCCESS
}
ntp_monitor()
{
ntp_status
}
ntp_validate_all()
{
get_variables
if [ -n "$OCF_RESKEY_binpath" -a ! -x "$OCF_RESKEY_binpath" ]; then
ocf_log err "Binary path $OCF_RESKEY_binpath does not exist."
return $OCF_ERR_ARGS
fi
if [ -n "$OCF_RESKEY_conffile" -a ! -f "$OCF_RESKEY_conffile" ]; then
ocf_log err "Config file $OCF_RESKEY_conffile does not exist."
return $OCF_ERR_ARGS
fi
if grep -v "^#" "$CONF_FILE" | grep "pidfile" > /dev/null ; then
:
else
ocf_log err "Error. \"pidfile\" entry required in the ntp config file by ntp OCF RA."
return $OCF_ERR_GENERIC
fi
return $OCF_SUCCESS
}
ntp_restart()
{
ntp_stop
ntp_start
}
#
# Main
#
if [ $# -ne 1 ]; then
usage
exit $OCF_ERR_ARGS
fi
case $1 in
start) ntp_start
;;
stop) ntp_stop
;;
restart) ntp_restart
;;
status) ntp_status
;;
monitor) ntp_monitor
;;
validate-all) ntp_validate_all
;;
meta-data) meta_data
;;
usage) usage; exit $OCF_SUCCESS
;;
*) usage; exit $OCF_ERR_UNIMPLEMENTED
;;
esac