Hi, Achim Stumpf
I made the squid resource agent several months before.
Attached script is it.
If you are interested in this, give it a try.
Achim Stumpf wrote:
Hi,
Is there already any squid resource agent?
At least I haven't found anything in:
http://hg.linux-ha.org/dev/file/4a47778b2ca9/resources/OCF/
If not I will write one... ;o)
Thanks,
Achim
_______________________________________________________
Linux-HA-Dev: [email protected]
http://lists.linux-ha.org/mailman/listinfo/linux-ha-dev
Home Page: http://linux-ha.org/
--
Takenaka Kazuhiro <[EMAIL PROTECTED]>
#!/bin/sh
#
# Description: Manages a Squid Server provided by NTT OSSC as an
# OCF High-Availability resource under Heartbeat/LinuxHA control
#
# Copyright (c) 2008 NIPPON TELEGRAPH AND TELEPHONE CORPORATION
#
#######################################################################
# OCF parameters:
# OCF_RESKEY_squid_exe : Executable file
# OCF_RESKEY_squid_conf : Configuration file
# OCF_RESKEY_squid_pidfile: Process id file
# OCF_RESKEY_squid_port : Port number
# OCF_RESKEY_debug_mode : Debug mode
# OCF_RESKEY_debug_log : Debug log file
# OCF_RESKEY_squid_stop_timeout:
# Number of seconds to await to confirm a
# normal stop method
#
# OCF_RESKEY_squid_exe, OCF_RESKEY_squid_conf, OCF_RESKEY_squid_pidfile
# and OCF_RESKEY_squid_port must be specified. Each of the rests
# has its default value or refers OCF_RESKEY_squid_conf to make
# its value when no explicit value is given.
###############################################################################
. ${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs
usage()
{
cat <<-!
usage: $0 action
action:
start : start a new squid instance
stop : stop the running squid instance
status : return the status of squid, run or down
monitor : return TRUE if the squid appears to be working.
meta-data : show meta data message
validate-all: validate the instance parameters
!
return $OCF_ERR_ARGS
}
metadata_squid()
{
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="Squid">
<version>1.0</version>
<longdesc lang="en">
The resource agent of Squid.
This manages a Squid instance as an HA resource.
</longdesc>
<shortdesc lang="en">The RA of Squid</shortdesc>
<parameters>
<parameter name="squid_exe" required="1" unique="0">
<longdesc lang="en">
This is a required parameter. This parameter specifies squid's
executable file.
</longdesc>
<shortdesc>Executable file</shortdesc>
<content type="string" default=""/>
</parameter>
<parameter name="squid_conf" required="1" unique="1">
<longdesc lang="en">
This is a required parameter. This parameter specifies a configuration file
for a squid instance managed by this RA.
</longdesc>
<shortdesc>Configuration file</shortdesc>
<content type="string" default=""/>
</parameter>
<parameter name="squid_pidfile" required="1" unique="1">
<longdesc lang="en">
This is a required parameter. This parameter specifies a process id file
for a squid instance managed by this RA.
</longdesc>
<shortdesc>Pidfile</shortdesc>
<content type="string" default=""/>
</parameter>
<parameter name="squid_port" required="1" unique="1">
<longdesc lang="en">
This is a required parameter. This parameter specifies a port number
for a squid instance managed by this RA. If plural ports are used,
you must specifiy the only one of them.
</longdesc>
<shortdesc>Port number</shortdesc>
<content type="integer" default=""/>
</parameter>
<parameter name="squid_stop_timeout" unique="0">
<longdesc lang="en">
This is an omittable parameter.
On a stop action, a normal stop method is firstly used.
and then the confirmation of its completion is awaited for
the specified seconds by this parameter.
The default value is 10.
</longdesc>
<shortdesc>Number of seconds to await to confirm a normal stop
method</shortdesc>
<content type="integer" default="10"/>
</parameter>
<parameter name="debug_mode" unique="0">
<longdesc lang="en">
This is an optional parameter.
This RA runs in debug mode when this parameter includes 'x' or 'v'.
If 'x' is included, both of STDOUT and STDERR redirect to the logfile
specified by "debug_log", and then the builtin shell option 'x' is turned on.
It is similar about 'v'.
</longdesc>
<shortdesc>Debug mode</shortdesc>
<content type="string" default=""/>
</parameter>
<parameter name="debug_log" unique="0">
<longdesc lang="en">
This is an optional and omittable parameter.
This parameter specifies a destination file for debug logs
and works only if this RA run in debug mode. Refer to "debug_mode"
about debug mode. If no value is given but it's requied, it's made by the
following rules: "/var/log/" as a directory part, the basename of
the configuration file given by "syslog_ng_conf" as a basename part,
".log" as a suffix.
</longdesc>
<shortdesc>A destination of the debug log</shortdesc>
<content type="string" default=""/>
</parameter>
</parameters>
<actions>
<action name="start" timeout="60s" />
<action name="stop" timeout="120s" />
<action name="status" timeout="60" />
<action name="monitor" depth="0" timeout="30s" interval="10s" start-delay="10s"
/>
<action name="meta-data" timeout="5s" />
<action name="validate-all" timeout="5"/>
</actions>
</resource-agent>
END
return $OCF_SUCCESS
}
get_pids()
{
SQUID_PIDS=( )
# Seek by pattern
SQUID_PIDS[0]=$(pgrep -f "$PROCESS_PATTERN")
# Seek by pidfile
SQUID_PIDS[1]=$(awk '1{print $1}' $SQUID_PIDFILE 2>/dev/null)
if [[ -n "${SQUID_PIDS[1]}" ]]; then
typeset exe
exe=$(ls -l "/proc/${SQUID_PIDS[1]}/exe")
if [[ $? = 0 ]]; then
exe=${exe##*-> }
if ! [[ "$exe" = $SQUID_EXE ]]; then
SQUID_PIDS[1]=""
fi
else
SQUID_PIDS[1]=""
fi
fi
# Seek by port
SQUID_PIDS[2]=$(
netstat -apn |
awk '/tcp.*[0-9]+\.[0-9]+\.+[0-9]+\.[0-9]+:'$SQUID_PORT'/{
sub("\\/.*", "", $7); print $7; exit}')
}
are_all_pids_found()
{
if
[[ -n "${SQUID_PIDS[0]}" ]] &&
[[ -n "${SQUID_PIDS[1]}" ]] &&
[[ -n "${SQUID_PIDS[2]}" ]]
then
return 0
else
return 1
fi
}
are_pids_sane()
{
if [[ "${SQUID_PIDS[1]}" = "${SQUID_PIDS[2]}" ]]; then
return $OCF_SUCCESS
else
ocf_log err "$SQUID_NAME:Pid unmatch"
return $OCF_ERR_GENERIC
fi
}
is_squid_dead()
{
if
[[ -z "${SQUID_PIDS[0]}" ]] &&
[[ -z "${SQUID_PIDS[2]}" ]]
then
return 0
else
return 1
fi
}
monitor_squid()
{
typeset trialcount=0
while true; do
get_pids
if are_all_pids_found; then
are_pids_sane
return $OCF_SUCCESS
fi
if is_squid_dead; then
return $OCF_NOT_RUNNING
fi
ocf_log info "$SQUID_NAME:Inconsistent processes:" \
"${SQUID_PIDS[0]},${SQUID_PIDS[1]},${SQUID_PIDS[2]}"
(( trialcount = trialcount + 1 ))
if (( trialcount > SQUID_CONFIRM_TRIALCOUNT )); then
ocf_log err "$SQUID_NAME:Inconsistency of processes
remains unsolved"
return $OCF_ERR_GENERIC
fi
sleep 1
done
}
start_squid()
{
typeset status
monitor_squid
status=$?
if [[ $status != $OCF_NOT_RUNNING ]]; then
return $status
fi
set -- "$SQUID_OPTS"
ocf_run $SQUID_EXE -f "$SQUID_CONF" "$@"
status=$?
if [[ $status != $OCF_SUCCESS ]]; then
return $status
fi
while true; do
get_pids
if are_all_pids_found && are_pids_sane; then
return $OCF_SUCCESS
fi
ocf_log info "$SQUID_NAME:Waiting for squid to be invoked"
sleep 1
done
return $OCF_ERR_GENERIC
}
stop_squid()
{
typeset lapse_sec
if ocf_run $SQUID_EXE -f $SQUID_CONF -k shutdown; then
lapse_sec=0
while true; do
get_pids
if is_squid_dead; then
rm -f $SQUID_PIDFILE
return $OCF_SUCCESS
fi
(( lapse_sec = lapse_sec + 1 ))
if (( lapse_sec > SQUID_STOP_TIMEOUT )); then
break
fi
sleep 1
ocf_log info "$SQUID_NAME:$FUNCNAME:$LINENO: " \
"stop NORM $lapse_sec/$SQUID_STOP_TIMEOUT"
done
fi
while true; do
get_pids
ocf_log info "$SQUID_NAME:$FUNCNAME:$LINENO: " \
"try to stop by SIGKILL:${SQUID_PIDS[0]}
${SQUID_PIDS[2]}"
kill -KILL ${SQUID_PIDS[0]} ${SQUID_PIDS[2]}
sleep 1
if is_squid_dead; then
rm -f $SQUID_PIDFILE
return $OCF_SUCCESS
fi
done
return $OCF_ERR_GENERIC
}
status_squid()
{
return $OCF_SUCCESS
}
validate_all_squid()
{
ocf_log info "validate_all_squid[$SQUID_NAME]"
return $OCF_SUCCESS
}
: === Debug ${0##*/} $1 ===
if [[ "$1" = "meta-data" ]]; then
metadata_squid
exit $?
fi
SQUID_CONF="${OCF_RESKEY_squid_conf}"
if [[ -z "$SQUID_CONF" ]]; then
ocf_log err "SQUID_CONF is not defined"
exit $OCF_ERR_CONFIGURED
fi
SQUID_NAME="${SQUID_CONF##*/}"
SQUID_NAME="${SQUID_NAME%.*}"
DEBUG_LOG="${OCF_RESKEY_debug_log-/var/log/squid_${SQUID_NAME}_debug}.log"
DEBUG_MODE=""
case $OCF_RESKEY_debug_mode in
*x*) DEBUG_MODE="${DEBUG_MODE}x";;
esac
case $OCF_RESKEY_debug_mode in
*v*) DEBUG_MODE="${DEBUG_MODE}v";;
esac
if [ -n "$DEBUG_MODE" ]; then
PS4='\d \t \h '"${1-unknown} "
export PS4
exec 1>>$DEBUG_LOG 2>&1
set -$DEBUG_MODE
fi
SQUID_EXE="${OCF_RESKEY_squid_exe}"
if [[ -z "$SQUID_EXE" ]]; then
ocf_log err "SQUID_EXE is not defined"
exit $OCF_ERR_CONFIGURED
fi
if [[ ! -x "$SQUID_EXE" ]]; then
ocf_log err "$SQUID_EXE is not found"
exit $OCF_ERR_CONFIGURED
fi
SQUID_PIDFILE="${OCF_RESKEY_squid_pidfile}"
if [[ -z "$SQUID_PIDFILE" ]]; then
ocf_log err "SQUID_PIDFILE is not defined"
exit $OCF_ERR_CONFIGURED
fi
SQUID_PORT="${OCF_RESKEY_squid_port}"
if [[ -z "$SQUID_PORT" ]]; then
ocf_log err "SQUID_PORT is not defined"
exit $OCF_ERR_CONFIGURED
fi
SQUID_OPTS="${OCF_RESKEY_squid_opts}"
SQUID_PIDS=( )
SQUID_CONFIRM_TRIALCOUNT="${OCF_RESKEY_squid_confirm_trialcount-3}"
SQUID_STOP_TIMEOUT="${OCF_RESKEY_squid_stop_timeout-5}"
SQUID_SUSPEND_TRIALCOUNT="${OCF_RESKEY_squid_suspend_trialcount-10}"
PROCESS_PATTERN="$SQUID_EXE -f $SQUID_CONF"
COMMAND=$1
case "$COMMAND" in
start)
ocf_log debug "[$SQUID_NAME] Enter squid start"
start_squid
func_status=$?
ocf_log debug "[$SQUID_NAME] Leave squid start $func_status"
exit $func_status
;;
stop)
ocf_log debug "[$SQUID_NAME] Enter squid stop"
stop_squid
func_status=$?
ocf_log debug "[$SQUID_NAME] Leave squid stop $func_status"
exit $func_status
;;
status)
status_squid
exit $?
;;
monitor)
#ocf_log debug "[$SQUID_NAME] Enter squid monitor"
monitor_squid
func_status=$?
#ocf_log debug "[$SQUID_NAME] Leave squid monitor $func_status"
exit $func_status
;;
validate-all)
validate_all_squid
exit $?
;;
*)
usage
;;
esac
# vim: set sw=4 ts=4 :
_______________________________________________________
Linux-HA-Dev: [email protected]
http://lists.linux-ha.org/mailman/listinfo/linux-ha-dev
Home Page: http://linux-ha.org/
