#! /bin/bash
### BEGIN INIT INFO
# Provides: munin-node
# Required-Start: $local_fs $remote_fs
# Required-Stop: $local_fs $remote_fs
# Should-Start: $all
# Should-Stop: $all
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start/stop Munin-Node
# Description: Start/stop Munin-Node
### END INIT INFO
PATH=/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/munin-node
PIDFILE=/var/run/munin/munin-node.pid
CONFFILE=/etc/munin/munin-node.conf
# log_daemon_msg() and log_progress_msg() isn't present in present in Sarge.
# Below is a copy of them from lsb-base 3.0-5, for the convenience of back-
# porters. If the installed version of lsb-base provides these functions,
# they will be used instead.
log_daemon_msg () {
if [ -z "$1" ]; then
return 1
fi
if [ -z "$2" ]; then
echo -n "$1:"
return
fi
echo -n "$1: $2"
}
log_progress_msg () {
if [ -z "$1" ]; then
return 1
fi
echo -n " $@"
}
. /lib/lsb/init-functions
[ -r /etc/default/munin-node ] && . /etc/default/munin-node
if [ ! -x $DAEMON ]; then
log_failure_msg "Munin-Node appears to be uninstalled."
exit 5
elif [ ! -e $CONFFILE ]; then
log_failure_msg "Munin-Node appears to be unconfigured."
exit 6
fi
# Figure out if the pid file is in a non-standard location
while read line; do
line=${line%%\#*} # get rid of comments
set -f
line=$(echo $line) # get rid of extraneous blanks
set +f
if [ "$line" != "${line#pid_file }" ]; then
PIDFILE=${line#pid_file }
fi
done < $CONFFILE
verify_superuser() {
action=$1
[ $EUID -eq 0 ] && return
log_failure_msg "Superuser privileges required for the" \
"\"$action\" action."
exit 4
}
start() {
log_daemon_msg "Starting Munin-Node"
mkdir -p /var/run/munin
chown munin:root /var/run/munin
chmod 0755 /var/run/munin
if pidofproc -p $PIDFILE $DAEMON >/dev/null; then
log_progress_msg "started beforehand"
log_end_msg 0
exit 0
fi
start_daemon -p $PIDFILE $DAEMON $DAEMON_ARGS
ret=$?
# start_daemon() isn't thorough enough, ensure the daemon has been
# started manually
attempts=0
until pidofproc -p $PIDFILE $DAEMON >/dev/null; do
attempts=$(( $attempts + 1 ))
sleep 0.05
[ $attempts -lt 20 ] && continue
log_end_msg 1
return 1
done
[ $ret -eq 0 ] && log_progress_msg "done"
log_end_msg $ret
return $ret
}
stop() {
log_daemon_msg "Stopping Munin-Node"
# killproc() doesn't try hard enough if the pid file is missing,
# so create it is gone and the daemon is still running
if [ ! -r $PIDFILE ]; then
pid=$(pidofproc -p $PIDFILE $DAEMON)
if [ -z "$pid" ]; then
log_progress_msg "stopped beforehand"
log_end_msg 0
return 0
fi
echo $pid 2>/dev/null > $PIDFILE
if [ $? -ne 0 ]; then
log_end_msg 1
return 1
fi
fi
killproc -p $PIDFILE /usr/bin/munin-node
ret=$?
# killproc() isn't thorough enough, ensure the daemon has been
# stopped manually
attempts=0
until ! pidofproc -p $PIDFILE $DAEMON >/dev/null; do
attempts=$(( $attempts + 1 ))
sleep 0.05
[ $attempts -lt 20 ] && continue
log_end_msg 1
return 1
done
[ $ret -eq 0 ] && log_progress_msg "done"
log_end_msg $ret
return $ret
}
if [ "$#" -ne 1 ]; then
log_failure_msg "Usage: /etc/init.d/munin-node" \
"{start|stop|restart|force-reload|try-restart}"
exit 2
fi
case "$1" in
start)
verify_superuser $1
start
exit $?
;;
stop)
verify_superuser $1
stop
exit $?
;;
restart|force-reload)
verify_superuser $1
stop || exit $?
start
exit $?
;;
try-restart)
verify_superuser $1
pidofproc -p $PIDFILE $DAEMON >/dev/null
if [ $? -eq 0 ]; then
stop || exit $?
start
exit $?
fi
log_success_msg "Munin-Node was stopped beforehand and thus not" \
"restarted."
exit 0
;;
reload)
log_failure_msg "The \"reload\" action is not implemented."
exit 3
;;
status)
pid=$(pidofproc -p $PIDFILE $DAEMON)
ret=$?
pid=${pid% } # pidofproc() supplies a trailing space, strip it
if [ $ret -eq 0 ]; then
log_success_msg "Munin-Node is running (PID: $pid)"
exit 0
# the LSB specifies that I in this case (daemon dead + pid file exists)
# should return 1, however lsb-base returned 2 in this case up to and
# including version 3.1-10 (cf. #381684). Since that bug is present
# in Sarge, Ubuntu Dapper, and (at the time of writing) Ubuntu Etch,
# and taking into account that later versions of pidofproc() do not
# under any circumstance return 2, I'll keep understanding invalid
# return code for the time being, even though the LSB specifies it is
# to be used for the situation where the "program is dead and /var/lock
# lock file exists".
elif [ $ret -eq 1 ] || [ $ret -eq 2 ]; then
log_failure_msg "Munin-Node is dead, although $PIDFILE exists."
exit 1
elif [ $ret -eq 3 ]; then
log_warning_msg "Munin-Node is not running."
exit 3
fi
log_warning_msg "Munin-Node status unknown."
exit 4
;;
*)
log_failure_msg "Usage: /etc/init.d/munin-node" \
"{start|stop|restart|force-reload|try-restart}"
exit 2
;;
esac
log_failure_msg "Unexpected failure, please file a bug."
exit 1
