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#!/bin/sh
#
# ldirectord OCF RA. Wrapper around @sbindir@/ldirectord to
# be OCF RA compliant and therefore to get the possibility
# to monitor ldirectord by HAv2.
# Tested on SuSE Linux Enterprise Server 10.
#
# Should conform to the specification found at
# http://www.linux-ha.org/OCFResourceAgent
# and
# http://www.opencf.org/cgi-bin/viewcvs.cgi/specs/ra/resource-agent-api.txt?rev=HEAD
#
# ToDo: Add parameter to start several instances of ldirectord
# with different config files.
#
# Copyright (c) 2007 Andreas Mock (andreas.mock@web.de)
# 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 Parameters
# OCF_RESKEY_configfile
# OCF_RESKEY_ldirectord
#
#######################################################################
# Initialization:
HA_VARRUNDIR=${HA_VARRUN}
. ${OCF_ROOT}/lib/heartbeat/ocf-shellfuncs
LDIRCONF=${OCF_RESKEY_configfile:-@sysconfdir@/ha.d/ldirectord.cf}
LDIRECTORD=${OCF_RESKEY_ldirectord:-@sbindir@/ldirectord}
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="ldirectord" version="0.9">
<version>1.0</version>
<longdesc lang="en">
It's a simple OCF RA wrapper for ldirectord and uses the ldirectord interface
to create the OCF compliant interface. You win monitoring of ldirectord.
Be warned: Asking ldirectord status is an expensive action.
</longdesc>
<shortdesc lang="en">Wrapper OCF Resource Agent for ldirectord</shortdesc>
<parameters>
<parameter name="configfile" unique="1">
<longdesc lang="en">
The full pathname of the ldirectord configuration file.
</longdesc>
<shortdesc lang="en">configuration file path</shortdesc>
<content type="string" default="@sysconfdir@/ha.d/ldirectord.cf" />
</parameter>
<parameter name="ldirectord">
<longdesc lang="en">
The full pathname of the ldirectord.
</longdesc>
<shortdesc lang="en">ldirectord binary path</shortdesc>
<content type="string" default="@sbindir@/ldirectord" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="15" />
<action name="stop" timeout="15" />
<action name="monitor" depth="0" timeout="10" interval="20" />
<action name="meta-data" timeout="10" />
<action name="validate-all" timeout="10" />
</actions>
</resource-agent>
END
}
#######################################################################
ldir_init() {
# check the supplied parameters exist enough that we can do all the other
# operations
if [ ! -f $LDIRCONF ]; then
ocf_log warn "$LDIRCONF not found, ldirectord not installed"
exit $OCF_ERR_INSTALLED
fi
if [ ! -x $LDIRECTORD ]; then
ocf_log warn "$LDIRECTORD not found, ldirectord not installed"
exit $OCF_ERR_INSTALLED
fi
}
ldirectord_usage() {
cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}
Expects to have a fully populated OCF RA-compliant environment set.
END
}
ldirectord_exit() {
exit $1
}
ldirectord_start() {
ldirectord_status
RET=$?
# if ldirectord is running or there's an error, pass on this return code
if [ $RET -ne $OCF_NOT_RUNNING ]; then
return $RET
fi
ocf_log info "Starting ldirectord"
echo $LDIRECTORD $LDIRCONF start
$LDIRECTORD $LDIRCONF start
RET=$?
if [ $RET -ne 0 ]; then
return $OCF_ERR_GENERIC
fi
# call status again to make sure we're running properly
ldirectord_status
}
ldirectord_stop() {
# a status check is simple enough to see if ldirectord is running or not.
# It will also error out if there's configuration parsing errors so we
# can try kill ldirectord even if the config is broken.
ldirectord_status
RET=$?
# ldirectord may be running, hard to tell when status returns an error
if [ $RET -eq $OCF_ERR_GENERIC ]; then
# get the PID of the right ldirectord process
PID=`pgrep -f "$LDIRECTORD $LDIRCONF start" 2>&1`
RET=$?
if [ $RET -eq 0 ]; then
ocf_log warn "Killing ldirectord($PID) with SIGTERM"
kill $PID
fi
pgrep -f "$LDIRECTORD $LDIRCONF start" >/dev/null 2>&1
RET=$?
# if ldirectord is not running any more, we've (kind of) successfully
# stopped it
if [ $RET -eq 1 ]; then
return $OCF_SUCCESS
else
# ldirectord is still running? Kill it badly
ocf_log warn "Killing ldirectord($PID) with SIGKILL"
kill -9 $PID
pgrep -f "$LDIRECTORD $LDIRCONF start" >/dev/null 2>&1
RET=$?
# if it's not dead after here, we can't really do anything more
if [ $RET -eq 1 ]; then
return $OCF_SUCCESS
fi
fi
# if none of our kills work, return an error. This should force the
# resource unmanaged
# on this node, requiring manual intervention.
return $OCF_ERR_GENERIC
else
ocf_log info "Stopping ldirectord"
# if ldirectord status is not an error, issue a stop. Multiple stops
# will return 0
$LDIRECTORD $LDIRCONF stop
RET=$?
case $RET in
0) return $RET;;
*) return 1;;
esac
fi
}
# simple check to see if ldirectord is running, returns the proper OCF codes.
ldirectord_status() {
OUTPUT=`$LDIRECTORD $LDIRCONF status 2>&1`
case $? in
0) return $OCF_SUCCESS;;
1) expr match "$OUTPUT" '.*ldirectord stale pid file.*' >/dev/null
if [ $? -eq 0 ]; then
return $OCF_NOT_RUNNING
else
return $OCF_ERR_GENERIC
fi;;
2) ocf_log err "$LDIRCONF has configuration errors"
echo $OUTPUT
return $OCF_ERR_GENERIC;;
3) return $OCF_NOT_RUNNING;;
*) echo $OUTPUT
return $OCF_ERR_GENERIC;;
esac
}
ldirectord_monitor() {
# check if the process is running first
ldirectord_status
RET=$?
if [ $RET -ne $OCF_SUCCESS ]; then
return $RET
fi
# do more advanced checks here for high OCF_CHECK_LEVELs. Don't know what
# more we can do at this time,
# a status call already hits LVS in the kernel.
}
ldirectord_validate() {
#ldir_init is already called, there's nothing more we can validate unless
#we add more attributes
return 0
}
case $1 in
meta-data|usage|help) : ;;
*) ldir_init $@ ;;
esac
case $__OCF_ACTION in
meta-data) meta_data
exit $OCF_SUCCESS
;;
start) ldirectord_start
ldirectord_exit $?
;;
stop) ldirectord_stop
ldirectord_exit $?
;;
monitor) ldirectord_monitor
ldirectord_exit $?
;;
validate-all) ldirectord_validate
ldirectord_exit $?
;;
usage|help) ldirectord_usage
exit $OCF_SUCCESS
;;
*) ldirectord_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac

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Sun, Jul 20, 8:35 PM (21 h, 27 m)
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