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#!/bin/sh
#
#
# HealthCPU OCF RA. Measures CPUs idling and writes
# #health-cpu status into the CIB
#
# Copyright (c) 2009 Michael Schwartzkopff
# in collaboration with the Bull company. Merci!
#
# All Rights Reserved.
#
# 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.
#
################################
#
# TODO: Enter default values
# Error handling in getting uptime
#
##################################
#######################################################################
# Initialization:
: ${OCF_FUNCTIONS=${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs}
. ${OCF_FUNCTIONS}
: ${__OCF_ACTION=$1}
#######################################################################
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="HealthCPU" version="0.1">
<version>0.1</version>
<longdesc lang="en">
Systhem health agent that measures the CPU idling and updates the #health-cpu attribute.
</longdesc>
<shortdesc lang="en">System health CPU usage</shortdesc>
<parameters>
<parameter name="state" unique="1">
<longdesc lang="en">
Location to store the resource state in.
</longdesc>
<shortdesc lang="en">State file</shortdesc>
<content type="string" default="${HA_VARRUN%%/}/health-cpu-${OCF_RESOURCE_INSTANCE}.state" />
</parameter>
<parameter name="yellow_limit" unique="1">
<longdesc lang="en">
Lower (!) limit of idle percentage to switch the health attribute to yellow. I.e.
the #health-cpu will go yellow if the %idle of the CPU falls below 50%.
</longdesc>
<shortdesc lang="en">Lower limit for yellow health attribute</shortdesc>
<content type="string" default="50"/>
</parameter>
<parameter name="red_limit" unique="1">
<longdesc lang="en">
Lower (!) limit of idle percentage to switch the health attribute to red. I.e.
the #health-cpu will go red if the %idle of the CPU falls below 10%.
</longdesc>
<shortdesc lang="en">Lower limit for red health attribute</shortdesc>
<content type="string" default="10"/>
</parameter>
</parameters>
<actions>
<action name="start" timeout="10" />
<action name="stop" timeout="10" />
<action name="monitor" timeout="10" interval="10" start-delay="0" />
<action name="meta-data" timeout="5" />
<action name="validate-all" timeout="10" />
</actions>
</resource-agent>
END
}
#######################################################################
# don't exit on TERM, to test that lrmd makes sure that we do exit
trap sigterm_handler TERM
sigterm_handler() {
ocf_log info "They use TERM to bring us down. No such luck."
return
}
dummy_usage() {
cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}
Expects to have a fully populated OCF RA-compliant environment set.
END
}
dummy_start() {
dummy_monitor
if [ $? = $OCF_SUCCESS ]; then
return $OCF_SUCCESS
fi
touch ${OCF_RESKEY_state}
}
dummy_stop() {
dummy_monitor
if [ $? = $OCF_SUCCESS ]; then
rm ${OCF_RESKEY_state}
fi
return $OCF_SUCCESS
}
dummy_monitor() {
# Monitor _MUST!_ differentiate correctly between running
# (SUCCESS), failed (ERROR) or _cleanly_ stopped (NOT RUNNING).
# That is THREE states, not just yes/no.
if [ -f ${OCF_RESKEY_state} ]; then
IDLE=`top -b -n2 | grep Cpu | tail -1 | awk -F",|.[0-9][ %]id" '{ print $4 }'`
# echo "System idle: " $IDLE
# echo "$OCF_RESKEY_red_limit"
# echo $OCF_RESKEY_yellow_limit
if [ $IDLE -lt ${OCF_RESKEY_red_limit} ] ; then
# echo "System state RED!"
attrd_updater -n "#health-cpu" -U "red" -d "30s"
return $OCF_SUCCESS
fi
if [ $IDLE -lt ${OCF_RESKEY_yellow_limit} ] ; then
# echo "System state yellow."
attrd_updater -n "#health-cpu" -U "yellow" -d "30s"
else
# echo "System state green."
attrd_updater -n "#health-cpu" -U "green" -d "30s"
fi
return $OCF_SUCCESS
fi
if false ; then
return $OCF_ERR_GENERIC
fi
return $OCF_NOT_RUNNING
}
dummy_validate() {
# Is the state directory writable?
state_dir=`dirname "$OCF_RESKEY_state"`
touch "$state_dir/$$"
if [ $? != 0 ]; then
return $OCF_ERR_ARGS
fi
rm "$state_dir/$$"
return $OCF_SUCCESS
}
: ${OCF_RESKEY_CRM_meta_interval=0}
: ${OCF_RESKEY_CRM_meta_globally_unique:="false"}
if [ "x$OCF_RESKEY_state" = "x" ]; then
if [ ${OCF_RESKEY_CRM_meta_globally_unique} = "false" ]; then
state="${HA_VARRUN%%/}/Dummy-${OCF_RESOURCE_INSTANCE}.state"
# Strip off the trailing clone marker
OCF_RESKEY_state=`echo $state | sed s/:[0-9][0-9]*\.state/.state/`
else
OCF_RESKEY_state="${HA_VARRUN%%/}/Dummy-${OCF_RESOURCE_INSTANCE}.state"
fi
fi
if [ "x${OCF_RESKEY_red_limit}" = "x" ] ; then
OCF_RESKEY_red_limit=10
fi
if [ "x${OCF_RESKEY_yellow_limit}" = "x" ] ; then
OCF_RESKEY_yellow_limit=50
fi
case $__OCF_ACTION in
meta-data) meta_data
exit $OCF_SUCCESS
;;
start) dummy_start;;
stop) dummy_stop;;
monitor) dummy_monitor;;
validate-all) dummy_validate;;
usage|help) dummy_usage
exit $OCF_SUCCESS
;;
*) dummy_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
rc=$?
ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
exit $rc

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HealthCPU (5 KB)

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