Init-Script für Redis-Cluster
Thomas Hooge
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68fce06f0b
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#! /bin/sh
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### BEGIN INIT INFO
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# Provides: redis-cluster
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# Required-Start: $syslog $remote_fs
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# Required-Stop: $syslog $remote_fs
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# Should-Start: $local_fs
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# Should-Stop: $local_fs
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Redis Cluster - Persistent key-value db
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# Description: This script will start multiple instances of the
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# redis server as defined in /etc/redis
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### END INIT INFO
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PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
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DAEMON=/usr/local/bin/redis-server
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DESC="Redis Server"
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CONFIG_DIR=/etc/redis
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PIDDIR=/var/run/redis
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NAME=redis-server
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DEFAULTSFILE=/etc/default/$NAME
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# Exit if the package is not installed
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test -x $DAEMON || exit 0
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# Exit if no config directory exists
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test -d $CONFIG_DIR || exit 0
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# Source defaults file
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test -r $DEFAULTSFILE && . $DEFAULTSFILE
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# Create run directory if it not exists
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if [ ! -d $PIDDIR ]; then
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mkdir $PIDDIR
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chown redis. $PIDDIR
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fi
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# Define LSB log_* functions.
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# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
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. /lib/lsb/init-functions
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#
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# Start a single redis daemon instance
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#
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start_instance () {
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# $1 - Absolute path of configfile for this instance
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# e.g. '/etc/redis/master-7000.conf'
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FILENAME=$(basename "$1")
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INSTANCE="${FILENAME%.*}"
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PIDFILE=$PIDDIR/$INSTANCE.pid
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log_begin_msg "Starting $NAME instance '$INSTANCE'"
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if [ ! -f $1 ]; then
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log_end_msg 1
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return 2
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fi
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if start-stop-daemon --start --quiet --umask 007 --chuid redis:redis \
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--name $INSTANCE --exec $DAEMON -- $1
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then
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log_end_msg 0
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else
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log_end_msg 1
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return 2
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fi
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}
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#
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# Stop a single redis daemon instance
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#
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stop_instance () {
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# $1 - Name of instance
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# e.g. 'master-7000'
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log_begin_msg "Stopping $NAME instance '$1'"
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PIDFILE=$PIDDIR/$INSTANCE.pid
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if [ ! -f $PIDFILE ]; then
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log_end_msg 1
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return 2
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fi
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if start-stop-daemon --stop --retry forever/TERM/1 --quiet --oknodo --pidfile $PIDFILE --exec $DAEMON
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then
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log_end_msg 0
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else
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log_end_msg 1
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fi
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}
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#
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# Get status for a redis daemon instance
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#
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status_instance () {
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# $1 - Name of instance
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# e.g. 'slave-7001'
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CONFIG=$CONFIG_DIR/$INSTANCE.conf
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if [ ! -f $CONFIG ]; then
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log_warning_msg "$NAME '$INSTANCE': missing $CONFIG file!"
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fi
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status_of_proc -p $PIDDIR/$INSTANCE.pid "$NAME" "$NAME '$INSTANCE'"
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}
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case "$1" in
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start)
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if [ "$RUN_DAEMON" = "no" ]; then
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log_warning_msg "Not starting $DESC (disabled in $DEFAULTSFILE)."
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exit 0
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fi
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if [ -n "$ULIMIT" ]
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then
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ulimit -n $ULIMIT
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fi
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# Alle .conf-Dateien werden abgearbeitet
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if [ "$#" -gt 1 ] ; then
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# start only given instances
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shift
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for INSTANCE in "$@" ; do
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start_instance $CONFIG_DIR/$INSTANCE.conf
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done
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else
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for CONFIG in $CONFIG_DIR/*.conf ; do
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if [ -e $CONFIG ] ; then # Make sure it isn't an empty match
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start_instance $CONFIG
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fi
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done
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fi
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;;
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stop)
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# If arguments are instance names terminate this else terminate all instances
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if [ "$#" -gt 1 ] ; then
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# stop only given instances
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shift
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for INSTANCE in "$@" ; do
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stop_instance $INSTANCE
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done
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else
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# stop all instances
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for PIDFILE in $PIDDIR/*.pid ; do
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if [ -e "$PIDFILE" ] ; then # Make sure it isn't an empty match
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FILENAME=$(basename "$PIDFILE")
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INSTANCE="${FILENAME%.*}"
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stop_instance $INSTANCE
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fi
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done
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fi
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;;
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restart|force-reload)
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if [ "$RUN_DAEMON" = "no" ]; then
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log_warning_msg "Not restarting $DESC (disabled in $DEFAULTSFILE)."
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exit 0
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fi
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# TODO schöner machen!
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shift
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${0} stop $@
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${0} start $@
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;;
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status)
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# If arguments are instance names get status for these else for all instances
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if [ "$#" -gt 1 ] ; then
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# status for given instances
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shift
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for INSTANCE in "$@" ; do
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status_instance $INSTANCE
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done
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else
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# status for all instances
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COUNTER=0
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for PIDFILE in $PIDDIR/*.pid ; do
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if [ -e "$PIDFILE" ] ; then # Make sure it isn't an empty match
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FILENAME=$(basename "$PIDFILE")
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INSTANCE="${FILENAME%.*}"
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status_instance $INSTANCE
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COUNTER=$((COUNTER+1))
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fi
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done
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if [ $COUNTER -eq 0 ] ; then
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log_action_msg "No instance of $NAME found"
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fi
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fi
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;;
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*)
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echo "Usage: /etc/init.d/redis-cluster {start|stop|restart|force-reload}" >&2
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exit 1
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;;
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esac
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exit 0
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