295 lines
7.0 KiB
Bash
295 lines
7.0 KiB
Bash
#!/bin/bash
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#
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# Resource script for ntp daemon with namespace support
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#
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# Description: Manages ntp daemon as an OCF resource in
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# an High Availability setup inside a namespace
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#
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# HAProxy OCF script's Author: Mirantis
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# License: GNU General Public License (GPL)
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#
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# usage: $0 {start|stop|restart|status|monitor|validate-all|meta-data}
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#
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# The "start" arg starts ntp.
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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_ns
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# OCF_RESKEY_conffile
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# OCF_RESKEY_pidfile
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# OCF_RESKEY_binpath
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# OCF_RESKEY_extraconf
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#
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# Note: This RA requires that the ntp 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_ROOT_default="/usr/lib/ocf"
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OCF_RESKEY_ns_default="vrouter"
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OCF_RESKEY_conffile_default="/etc/ntp.conf"
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OCF_RESKEY_pidfile_default="/var/run/ntpd.pid"
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OCF_RESKEY_binpath_default="/usr/sbin/ntpd"
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OCF_RESKEY_extraconf_default=""
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: ${OCF_ROOT=${OCF_ROOT_default}}
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: ${HA_LOGTAG="ocf-ns_ntp"}
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: ${HA_LOGFACILITY="daemon"}
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: ${OCF_RESKEY_ns=${OCF_RESKEY_ns_default}}
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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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: ${OCF_RESKEY_extraconf=${OCF_RESKEY_extraconf_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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: ${OCF_FUEL_FUNCTIONS_DIR=${OCF_ROOT}/resource.d/fuel}
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. ${OCF_FUEL_FUNCTIONS_DIR}/ocf-fuel-funcs
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USAGE="Usage: $0 {start|stop|restart|status|monitor|validate-all|meta-data}";
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if [ -n "${OCF_RESKEY_ns}" ]; then
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RUN="ip netns exec ${OCF_RESKEY_ns} "
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else
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RUN=''
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fi
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##########################################################################
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usage()
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{
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echo $USAGE >&2
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}
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meta_data()
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{
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cat <<END
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<?xml version="1.0"?>
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<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
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<resource-agent name="ntp">
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<version>1.0</version>
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<longdesc lang="en">
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This script manages ntp daemon with namespace support
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</longdesc>
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<shortdesc lang="en">Manages an ntp daemon inside a namespace</shortdesc>
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<parameters>
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<parameter name="ns">
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<longdesc lang="en">
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Name of network namespace.
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Should be present.
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</longdesc>
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<shortdesc lang="en">Name of network namespace.</shortdesc>
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<content type="string" default="${OCF_RESKEY_ns_default}"/>
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</parameter>
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<parameter name="conffile">
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<longdesc lang="en">
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The ntp daemon configuration file name with full path.
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For example, "/etc/ntp/ntp.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="${OCF_RESKEY_conffile_default}" />
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</parameter>
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<parameter name="pidfile">
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<longdesc lang="en">
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The ntp pid file path.
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For example, "/var/run/ntp.pid"
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</longdesc>
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<shortdesc lang="en">Full path to the ntp pid file</shortdesc>
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<content type="string" default="${OCF_RESKEY_pidfile_default}"/>
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</parameter>
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<parameter name="binpath">
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<longdesc lang="en">
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The ntp binary path.
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For example, "/usr/sbin/ntp"
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</longdesc>
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<shortdesc lang="en">Full path to the ntp binary</shortdesc>
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<content type="string" default="${OCF_RESKEY_binpath_default}"/>
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</parameter>
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<parameter name="extraconf">
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<longdesc lang="en">
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Extra command line arguments to pass to ntp.
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For example, "-f /etc/ntp/shared.cfg"
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</longdesc>
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<shortdesc lang="en">Extra command line arguments for ntp</shortdesc>
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<content type="string" default="${OCF_RESKEY_extraconf_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="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 $OCF_SUCCESS
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}
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get_variables() {
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CONF_FILE="${OCF_RESKEY_conffile}"
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COMMAND="${RUN} ${OCF_RESKEY_binpath}"
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PIDFILE="${OCF_RESKEY_pidfile}"
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}
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ntp_status() {
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get_variables
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if [ -n "${PIDFILE}" -a -f "${PIDFILE}" ]; then
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# ntp 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 "${PID}" | grep -q ntp; then
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if [ -n "${OCF_RESKEY_ns}" ]; then
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NS=`ip netns identify "${PID}"`
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if [ "${NS}" != "${OCF_RESKEY_ns}" ]; then
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# ntp is running with the correct pid
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# but not in the right network namespace
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ocf_log info "ntp daemon is running in a wrong namespace."
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return "${OCF_ERR_GENERIC}"
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fi
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fi
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ocf_log info "ntp daemon running"
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return "${OCF_SUCCESS}"
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else
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ocf_log info "ntp daemon is not running but pid file exists"
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return "${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 "${OCF_ERR_GENERIC}"
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fi
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fi
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# ntp is not running
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ocf_log info "ntp daemon is not running"
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return "${OCF_NOT_RUNNING}"
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}
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ntp_start()
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{
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get_variables
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# if ntp is running return success
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ntp_status
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rc="${?}"
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if [ "${rc}" -eq "${OCF_SUCCESS}" ]; then
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return "${OCF_SUCCESS}"
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elif [ "${rc}" -ne "${OCF_NOT_RUNNING}" ]; then
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ocf_log err "Error. Unknown status."
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return "${OCF_ERR_GENERIC}"
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fi
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# run the ntp binary
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ocf_run_as_root ${COMMAND} ${OCF_RESKEY_extraconf} -u ntp:ntp -p "${PIDFILE}" -4 -g -c "${CONF_FILE}"
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if [ "${?}" -ne "0" ]; then
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ocf_log err "Error. ntp daemon returned error $?."
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return "${OCF_ERR_GENERIC}"
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fi
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ocf_log info "Started ntp daemon."
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return "${OCF_SUCCESS}"
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}
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ntp_stop()
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{
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local rc
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local LH="${LL} haproxy_stop():"
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local shutdown_timeout=15
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if [ -n "$OCF_RESKEY_CRM_meta_timeout" ]; then
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shutdown_timeout=$(( ($OCF_RESKEY_CRM_meta_timeout/1000) ))
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fi
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get_variables
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ntp_status
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rc="${?}"
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if [ "${rc}" -eq "${OCF_NOT_RUNNING}" ]; then
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ocf_log info "${LH} ntp already stopped."
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return "${OCF_SUCCESS}"
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fi
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proc_stop "${PIDFILE}" "${OCF_RESKEY_binpath}" $shutdown_timeout
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return "${?}"
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}
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ntp_monitor()
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{
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ntp_status
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}
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ntp_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 $OCF_RESKEY_binpath does not exist."
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return "${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 $OCF_RESKEY_conffile does not exist."
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return "${OCF_ERR_ARGS}"
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fi
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if grep -v '^#' "${CONF_FILE}" | grep 'pidfile' > /dev/null ; then
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:
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else
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ocf_log err "Error. 'pidfile' entry required in the ntp config file by ntp OCF RA."
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return "${OCF_ERR_GENERIC}"
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fi
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return "${OCF_SUCCESS}"
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}
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ntp_restart()
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{
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ntp_stop
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ntp_start
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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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export LL="${OCF_RESOURCE_INSTANCE}:"
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case $1 in
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start) ntp_start
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;;
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stop) ntp_stop
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;;
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restart) ntp_restart
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;;
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status) ntp_status
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;;
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monitor) ntp_monitor
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;;
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validate-all) ntp_validate_all
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;;
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meta-data) meta_data
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;;
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usage) usage; exit "${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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