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#!/bin/sh
#
# OCF Resource Agent compliant resource script.
#
# Copyright (c) 2009 IN-telegence GmbH & Co. KG, Dominik Klein
# 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.
# OCF instance parameters
# OCF_RESKEY_binfile
# OCF_RESKEY_cmdline_options
# OCF_RESKEY_workdir
# OCF_RESKEY_pidfile
# OCF_RESKEY_logfile
# OCF_RESKEY_errlogfile
# OCF_RESKEY_user
# OCF_RESKEY_monitor_hook
# OCF_RESKEY_stop_timeout
#
# This RA starts $binfile with $cmdline_options as $user in $workdir and writes a $pidfile from that.
# If you want it to, it logs:
# - stdout to $logfile, stderr to $errlogfile or
# - stdout and stderr to $logfile
# - or to will be captured by lrmd if these options are omitted.
# Monitoring is done through $pidfile or your custom $monitor_hook script.
# The RA expects the program to keep running "daemon-like" and
# not just quit and exit. So this is NOT (yet - feel free to
# enhance) a way to just run a single one-shot command which just
# does something and then exits.
# Initialization:
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
getpid() {
grep -o '[0-9]*' $1
}
anything_status() {
if test -f "$pidfile"
then
if pid=`getpid $pidfile` && [ "$pid" ] && kill -s 0 $pid
then
return $OCF_SUCCESS
else
# pidfile w/o process means the process died
return $OCF_ERR_GENERIC
fi
else
return $OCF_NOT_RUNNING
fi
}
anything_start() {
if ! anything_status
then
if [ -n "$logfile" -a -n "$errlogfile" ]
then
# We have logfile and errlogfile, so redirect STDOUT und STDERR to different files
cmd="su - $user -c \"cd $workdir; nohup $binfile $cmdline_options >> $logfile 2>> $errlogfile & \"'echo \$!' "
else
# We only have logfile so redirect STDOUT and STDERR to the same file
cmd="su - $user -c \"cd $workdir; nohup $binfile $cmdline_options >> $logfile 2>&1 & \"'echo \$!' "
fi
ocf_log debug "Starting $process: $cmd"
# Execute the command as created above
eval $cmd > $pidfile
if anything_status
then
ocf_log debug "$process: $cmd started successfully"
return $OCF_SUCCESS
else
ocf_log err "$process: $cmd could not be started"
return $OCF_ERR_GENERIC
fi
else
# If already running, consider start successful
ocf_log debug "$process: $cmd is already running"
return $OCF_SUCCESS
fi
}
anything_stop() {
local rc=$OCF_SUCCESS
if [ -n "$OCF_RESKEY_stop_timeout" ]
then
stop_timeout=$OCF_RESKEY_stop_timeout
elif [ -n "$OCF_RESKEY_CRM_meta_timeout" ]; then
# Allow 2/3 of the action timeout for the orderly shutdown
# (The origin unit is ms, hence the conversion)
stop_timeout=$((OCF_RESKEY_CRM_meta_timeout/1500))
else
stop_timeout=10
fi
if anything_status
then
pid=`getpid $pidfile`
kill $pid
i=0
while [ $i -lt $stop_timeout ]
do
if ! anything_status
then
rm -f $pidfile
return $OCF_SUCCESS
fi
sleep 1
i=$((i+1))
done
ocf_log warn "Stop with SIGTERM failed/timed out, now sending SIGKILL."
kill -s 9 $pid
while :
do
if ! anything_status
then
ocf_log warn "SIGKILL did the job."
rc=$OCF_SUCCESS
break
fi
ocf_log info "The job still hasn't stopped yet. Waiting..."
sleep 1
done
fi
rm -f $pidfile
return $rc
}
anything_monitor() {
anything_status
ret=$?
if [ $ret -eq $OCF_SUCCESS ]
then
if [ -n "$OCF_RESKEY_monitor_hook" ]; then
eval "$OCF_RESKEY_monitor_hook"
if [ $? -ne $OCF_SUCCESS ]; then
return ${OCF_ERR_GENERIC}
fi
return $OCF_SUCCESS
else
true
fi
else
return $ret
fi
}
# FIXME: Attributes special meaning to the resource id
process="$OCF_RESOURCE_INSTANCE"
binfile="$OCF_RESKEY_binfile"
cmdline_options="$OCF_RESKEY_cmdline_options"
workdir="$OCF_RESKEY_workdir"
pidfile="$OCF_RESKEY_pidfile"
[ -z "$pidfile" ] && pidfile=${HA_VARRUN}/anything_${process}.pid
logfile="${OCF_RESKEY_logfile:-/dev/null}"
errlogfile="$OCF_RESKEY_errlogfile"
user="$OCF_RESKEY_user"
[ -z "$user" ] && user=root
anything_validate() {
if ! su - $user -c "test -x $binfile"
then
ocf_log err "binfile $binfile does not exist or is not executable by $user."
exit $OCF_ERR_INSTALLED
fi
if ! getent passwd $user >/dev/null 2>&1
then
ocf_log err "user $user does not exist."
exit $OCF_ERR_INSTALLED
fi
for logfilename in "$logfile" "$errlogfile"
do
if [ -n "$logfilename" ]; then
mkdir -p `dirname $logfilename` || {
ocf_log err "cannot create $(dirname $logfilename)"
exit $OCF_ERR_INSTALLED
}
fi
done
[ "x$workdir" != x -a ! -d "$workdir" ] && {
ocf_log err "working directory $workdir doesn't exist"
exit $OCF_ERR_INSTALLED
}
return $OCF_SUCCESS
}
anything_meta() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="anything">
<version>1.0</version>
<longdesc lang="en">
This is a generic OCF RA to manage almost anything.
</longdesc>
<shortdesc lang="en">Manages an arbitrary service</shortdesc>
<parameters>
<parameter name="binfile" required="1" unique="1">
<longdesc lang="en">
The full name of the binary to be executed. This is expected to keep running with the same pid and not just do something and exit.
</longdesc>
<shortdesc lang="en">Full path name of the binary to be executed</shortdesc>
<content type="string" default=""/>
</parameter>
<parameter name="cmdline_options" required="0">
<longdesc lang="en">
Command line options to pass to the binary
</longdesc>
<shortdesc lang="en">Command line options</shortdesc>
<content type="string" />
</parameter>
<parameter name="workdir" required="0" unique="0">
<longdesc lang="en">
The path from where the binfile will be executed.
</longdesc>
<shortdesc lang="en">Full path name of the work directory</shortdesc>
<content type="string" default=""/>
</parameter>
<parameter name="pidfile">
<longdesc lang="en">
File to read/write the PID from/to.
</longdesc>
<shortdesc lang="en">File to write STDOUT to</shortdesc>
<content type="string" default="${HA_VARRUN}/anything_${process}.pid"/>
</parameter>
<parameter name="logfile" required="0">
<longdesc lang="en">
File to write STDOUT to
</longdesc>
<shortdesc lang="en">File to write STDOUT to</shortdesc>
<content type="string" default="/dev/null" />
</parameter>
<parameter name="errlogfile" required="0">
<longdesc lang="en">
File to write STDERR to
</longdesc>
<shortdesc lang="en">File to write STDERR to</shortdesc>
<content type="string" />
</parameter>
<parameter name="user" required="0">
<longdesc lang="en">
User to run the command as
</longdesc>
<shortdesc lang="en">User to run the command as</shortdesc>
<content type="string" default="root"/>
</parameter>
<parameter name="monitor_hook">
<longdesc lang="en">
Command to run in monitor operation
</longdesc>
<shortdesc lang="en">Command to run in monitor operation</shortdesc>
<content type="string"/>
</parameter>
<parameter name="stop_timeout">
<longdesc lang="en">
In the stop operation: Seconds to wait for kill -TERM to succeed
before sending kill -SIGKILL. Defaults to 2/3 of the stop operation timeout.
</longdesc>
<shortdesc lang="en">Seconds to wait after having sent SIGTERM before sending SIGKILL in stop operation</shortdesc>
<content type="string" default=""/>
</parameter>
</parameters>
<actions>
<action name="start" timeout="20s" />
<action name="stop" timeout="20s" />
<action name="monitor" depth="0" timeout="20s" interval="10" />
<action name="meta-data" timeout="5" />
<action name="validate-all" timeout="5" />
</actions>
</resource-agent>
END
exit 0
}
case "$1" in
meta-data|metadata|meta_data)
anything_meta
;;
start)
anything_start
;;
stop)
anything_stop
;;
monitor)
anything_monitor
;;
validate-all)
anything_validate
;;
*)
ocf_log err "$0 was called with unsupported arguments: $*"
exit $OCF_ERR_UNIMPLEMENTED
;;
esac

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Mon, Dec 23, 11:36 AM (1 d, 2 h)
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