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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_pidfile
# OCF_RESKEY_logfile
# OCF_RESKEY_errlogfile
# OCF_RESKEY_user
# OCF_RESKEY_monitor_hook
#
# This RA starts $binfile with $cmdline_options as $user 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:
. ${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs
getpid() { # make sure that the file contains a number
# FIXME: pidfiles could contain spaces
grep '^[0-9][0-9]*$' $1
}
anything_status() {
# FIXME: This should use pidofproc
# FIXME: pidfile w/o process means the process died, so should
# be ERR_GENERIC
if test -f "$pidfile" && pid=`getpid $pidfile` && kill -0 $pid
then
return $OCF_RUNNING
else
return $OCF_NOT_RUNNING
fi
}
anything_start() {
if ! anything_status
# FIXME: use start_daemon
# FIXME: What about daemons which can manage their own pidfiles?
then
if [ -n "$logfile" -a -n "$errlogfile" ]
then
# We have logfile and errlogfile, so redirect STDOUT und STDERR to different files
cmd="su - $user -c \"nohup $binfile $cmdline_options >> $logfile 2>> $errlogfile & \"'echo \$!' "
else if [ -n "$logfile" ]
then
# We only have logfile so redirect STDOUT and STDERR to the same file
cmd="su - $user -c \"nohup $binfile $cmdline_options >> $logfile 2>&1 & \"'echo \$!' "
else
# We have neither logfile nor errlogfile, so we're not going to redirect anything
cmd="su - $user -c \"nohup $binfile $cmdline_options & \"'echo \$!'"
fi
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() {
# FIXME: use killproc
if anything_status
then
pid=`getpid $pidfile`
kill $pid
i=0
# FIXME: escalate to kill -9 before timeout
while sleep 1
do
if ! anything_status
then
rm -f $pidfile > /dev/null 2>&1
return $OCF_SUCCESS
fi
let "i++"
done
else
# was not running, so stop can be considered successful
rm -f $pidfile
return $OCF_SUCCESS
fi
# FIXME: Never reached.
return $OCF_ERR_GENERIC
}
anything_monitor() {
anything_status
ret=$?
if [ $ret -eq $OCF_SUCCESS ]
then
# implement your deeper monitor operation here
if [ -n "$OCF_RESKEY_monitor_hook" ]; then
eval "$OCF_RESKEY_monitor_hook"
# FIXME: Implement a check that this doesn't
# accidentially return NOT_RUNNING?
return
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"
pidfile="$OCF_RESKEY_pidfile"
# FIXME: Why test for $binfile here?
[ -z "$pidfile" -a -n "$binfile" ] && pidfile=${HA_VARRUN}/anything_${process}.pid
logfile="$OCF_RESKEY_logfile"
errlogfile="$OCF_RESKEY_errlogfile"
user="$OCF_RESKEY_user"
[ -z "$user" ] && user=root
anything_validate() {
# FIXME: Actually this needs to test from the point of view of
# the user.
if [ ! -x "$binfile" ]
then
ocf_log err "binfile $binfile does not exist or is not executable."
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
return $OCF_SUCCESS
}
anything_meta() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="anything_ra">
<version>1.0</version>
<longdesc lang="en">
This is a generic OCF RA to manage almost anything.
</longdesc>
<shortdesc lang="en">anything</shortdesc>
<parameters>
<parameter name="binfile" required="1" unique="1">
<longdesc lang="en">
The full name of the binary to be executed. This is expected to keep running with the same pid and not just do something and exit.
</longdesc>
<shortdesc lang="en">Full path name of the binary to be executed</shortdesc>
<content type="string" default=""/>
</parameter>
<parameter name="cmdline_options" required="0">
<longdesc lang="en">
Command line options to pass to the binary
</longdesc>
<shortdesc lang="en">Command line options</shortdesc>
<content type="string" />
</parameter>
<parameter name="pidfile">
<longdesc lang="en">
File to read/write the PID from/to.
</longdesc>
<shortdesc lang="en">File to write STDOUT to</shortdesc>
<content type="string" default="${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" />
</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>
</parameters>
<actions>
<action name="start" timeout="90" />
<action name="stop" timeout="100" />
<action name="monitor" depth="0" timeout="20" 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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text/x-shellscript
Expires
Sun, Jul 20, 8:29 PM (18 h, 31 m)
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Storage Handle
2018899
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anything (7 KB)

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