diff options
Diffstat (limited to 'heartbeat/Xinetd')
| -rwxr-xr-x | heartbeat/Xinetd | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/heartbeat/Xinetd b/heartbeat/Xinetd new file mode 100755 index 0000000..778e18c --- /dev/null +++ b/heartbeat/Xinetd @@ -0,0 +1,256 @@ +#!/bin/sh +# +# Startup/shutdown script for services managed by xinetd. +# +# Copyright (C) 2003 Charlie Brooks +# Copyright (C) 2011 Ulrich Windl +# +# WARNING: Tested ONLY on SLES11 SP1 at this time. +# +# Author: Charlie Brooks <ha@HBCS.Org> +# Description: given parameters of a service name and start|stop|status, +# will enable, disable or report on a specified xinetd service +# Config: all services must have a descriptor file in /etc/xinetd.d +# Support: users@clusterlabs.org +# License: GNU General Public License (GPL) +# +# OCF parameters are as below: +# OCF_RESKEY_service + +####################################################################### +# Initialization: + +: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} +. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs + +# Parameter defaults + +OCF_RESKEY_service_default="" + +: ${OCF_RESKEY_service=${OCF_RESKEY_service_default}} + +service=$OCF_RESKEY_service +SVCDEF=/etc/xinetd.d/$service + +####################################################################### + +meta_data() { + cat <<END +<?xml version="1.0"?> +<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd"> +<resource-agent name="Xinetd" version="1.0"> +<version>1.0</version> + +<longdesc lang="en"> +Resource script for Xinetd. It starts/stops services managed +by xinetd by enabling or disabling them in the configuration file. + +The xinetd daemon itself must be running: we are not going to start or +stop it ourselves. + +All services should have a line saying either "disable=yes" or "disable=no". +The script just changes those settings before reloading xinetd. + +Important: in case the services managed by the cluster are the +only ones enabled, you should specify the -stayalive option for +xinetd or it will exit on Heartbeat stop. Alternatively, you may +enable some internal service such as echo. +</longdesc> +<shortdesc lang="en">Manages a service of Xinetd</shortdesc> + +<parameters> +<parameter name="service" unique="0" required="1"> +<longdesc lang="en"> +The name of the service managed by xinetd. +</longdesc> +<shortdesc lang="en">service name</shortdesc> +<content type="string" default="${OCF_RESKEY_service_default}" /> +</parameter> +</parameters> + +<actions> +<action name="start" timeout="20s" /> +<action name="stop" timeout="20s" /> +<action name="restart" timeout="20s" /> +<action name="status" depth="0" timeout="10s" interval="10s" /> +<action name="monitor" depth="0" timeout="10s" interval="10s" /> +<action name="validate-all" timeout="5s" /> +<action name="meta-data" timeout="5s" /> +</actions> +</resource-agent> +END +} + +get_xinetd_pid() { + ps -e -o pid,comm | $AWK '$2 == "xinetd" { print $1 }' +} + +# force xinetd to reload the service descriptions +hup_inetd () { + # don't rely on the pid file, but lookup xinetd in the list of + # processes + local pid + pid=`get_xinetd_pid` + if [ "$pid" ]; then + if kill -s HUP $pid; then + ocf_log info "asked xinetd to reload by sending SIGHUP to process $pid!" + else + ocf_exit_reason "could not send SIGHUP to process $pid!" + exit $OCF_ERR_GENERIC + fi + else + ocf_exit_reason "xinetd process not found!" + exit $OCF_ERR_GENERIC + fi +} + +# check "disable = X", printing X +check_service() +{ + ocf_log "info" "checking \"disable\" in $1" + local result=$(sed -nre 's/^[ ]*disable[ ]*=[ ]*([^ ]+)[# ]*/\1/p' $1) + echo "$result" +} + +# change "disable = X" to desired value +change_service() +{ + ocf_log "info" "setting \"disable = $1\" in $2" + if ! sed -i -re 's/^([ ]*disable[ ]*=[ ]*)([^ ]+)([# ]*)/\1'"$1"'\3/' $2 + then + ocf_log "err" "could not edit $2" + return 1 + fi + return 0 +} + +xup_status () { + local disabled="$(check_service $SVCDEF)" + if [ "${disabled:=no}" = no ]; then + echo running + return $OCF_SUCCESS + elif [ "$disabled" = yes ]; then + echo stopped + return $OCF_NOT_RUNNING + else + echo unknown + return $OCF_ERR_CONFIGURED + fi +} + +xup_start () { + if [ "running" = "`xup_status`" ]; then + ocf_log info "service $service already started" + exit $OCF_SUCCESS + fi + ocf_log "info" "enabling in $SVCDEF" + if change_service "no" $SVCDEF; then + hup_inetd + fi +} + +xup_stop () { + if [ "stopped" = "`xup_status`" ]; then + ocf_log info "service $service already stopped" + exit $OCF_SUCCESS + fi + ocf_log "info" "disabling in $SVCDEF" + if change_service "yes" $SVCDEF; then + hup_inetd + fi +} + +xup_usage () { + echo "Usage: $0 {start|stop|restart|status|monitor|validate-all|meta-data}" + return 0 +} + +xup_validate_all () { + if [ ! -f "$SVCDEF" ]; then + ocf_exit_reason "service $service missing $SVCDEF" + return $OCF_ERR_INSTALLED + fi + return $OCF_SUCCESS +} + +if [ $# -ne 1 ]; then + xup_usage + exit $OCF_ERR_ARGS +fi + +# These operations do not require OCF instance parameters to be set +case "$1" in + meta-data) + meta_data + exit $OCF_SUCCESS + ;; + usage) + xup_usage + exit $OCF_SUCCESS + ;; +esac + +if [ -z "$OCF_RESKEY_service" ]; then + ocf_exit_reason "please define \"service\" parameter" + if [ "$1" = "start" ]; then + exit $OCF_ERR_CONFIGURED + else + exit $OCF_NOT_RUNNING + fi +fi + +# Is xinetd running at all +if [ -z "`get_xinetd_pid`" ]; then + case "$1" in + stop) exit $OCF_SUCCESS;; + start) + ocf_exit_reason "xinetd not running, we manage just xinetd services, not the daemon itself" + exit $OCF_ERR_INSTALLED + ;; + status|monitor) + if ocf_is_probe; then + exit $OCF_NOT_RUNNING + else + ocf_exit_reason "xinetd stopped" + exit $OCF_ERR_GENERIC + fi + ;; + esac +fi + +# Make sure the OCF_RESKEY_service is a valid xinetd service name +if [ ! -f $SVCDEF ]; then + ocf_exit_reason "service definition $SVCDEF not found!" + if [ "$1" = "start" ]; then + exit $OCF_ERR_INSTALLED + else + exit $OCF_NOT_RUNNING + fi +fi + +# See how we were called. +case "$1" in + start) + xup_start + ;; + stop) + xup_stop + ;; + restart) + $0 stop + $0 start + ;; + status) + xup_status + ;; + monitor) + xup_status > /dev/null + ;; + validate-all) + xup_validate_all + ;; + *) + xup_usage + exit $OCF_ERR_UNIMPLEMENTED +esac +exit $? |