#!/bin/sh # # # Example of a stateful OCF Resource Agent. # # Copyright (c) 2006 Andrew Beekhof # # This program is free software; you can redistribute it and/or modify # it under the terms of version 2 of the GNU General Public License as # published by the Free Software Foundation. # # This program is distributed in the hope that it would be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Further, this software is distributed without any warranty that it is # free of the rightful claim of any third person regarding infringement # or the like. Any license provided herein, whether implied or # otherwise, applies only to this software file. Patent licenses, if # any, provided herein do not apply to combinations of this program with # other software, or any other product whatsoever. # # You should have received a copy of the GNU General Public License # along with this program; if not, write the Free Software Foundation, # Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. # ####################################################################### # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs # Parameter defaults OCF_RESKEY_state_default="${HA_RSCTMP}/Stateful-${OCF_RESOURCE_INSTANCE}.state" : ${OCF_RESKEY_state=${OCF_RESKEY_state_default}} CRM_MASTER="${HA_SBIN_DIR}/crm_master -l reboot" ####################################################################### meta_data() { cat < 1.0 This is an example resource agent that implements two states Example stateful resource agent Location to store the resource state in State file END exit $OCF_SUCCESS } ####################################################################### stateful_usage() { cat < ${OCF_RESKEY_state} } stateful_check_state() { target=$1 if [ -f ${OCF_RESKEY_state} ]; then state=`cat ${OCF_RESKEY_state}` if [ "x$target" = "x$state" ]; then return $OCF_SUCCESS fi else if [ "x$target" = "x" ]; then return $OCF_SUCCESS fi fi return $OCF_ERR_GENERIC } stateful_start() { stateful_check_state master if [ $? = 0 ]; then # CRM Error - Should never happen return $OCF_RUNNING_MASTER fi stateful_update slave $CRM_MASTER -v 5 return $OCF_SUCCESS } stateful_demote() { stateful_check_state if [ $? = 0 ]; then # CRM Error - Should never happen return $OCF_NOT_RUNNING fi stateful_update slave $CRM_MASTER -v 5 return $OCF_SUCCESS } stateful_promote() { stateful_check_state if [ $? = 0 ]; then return $OCF_NOT_RUNNING fi stateful_update master $CRM_MASTER -v 10 return $OCF_SUCCESS } stateful_stop() { $CRM_MASTER -D stateful_check_state master if [ $? = 0 ]; then # CRM Error - Should never happen return $OCF_RUNNING_MASTER fi if [ -f ${OCF_RESKEY_state} ]; then rm ${OCF_RESKEY_state} fi return $OCF_SUCCESS } stateful_monitor() { stateful_check_state "master" if [ $? = 0 ]; then return $OCF_RUNNING_MASTER fi stateful_check_state "slave" if [ $? = 0 ]; then return $OCF_SUCCESS fi if [ -f ${OCF_RESKEY_state} ]; then echo "File '${OCF_RESKEY_state}' exists but contains unexpected contents" cat ${OCF_RESKEY_state} return $OCF_ERR_GENERIC fi return $OCF_NOT_RUNNING } stateful_validate() { exit $OCF_SUCCESS } case $__OCF_ACTION in meta-data) meta_data;; start) stateful_start;; promote) stateful_promote;; demote) stateful_demote;; stop) stateful_stop;; monitor) stateful_monitor;; validate-all) stateful_validate;; usage|help) stateful_usage $OCF_SUCCESS;; *) stateful_usage $OCF_ERR_UNIMPLEMENTED;; esac exit $?