Init-script for optionally starting multiple redis instances on the same host running Ubunut/Debian. Highly inspired by the memcached init script that comes with the Ubuntu package. This is useful since redis is single-threaded.

gistfile1.sh

#! /bin/bash
### BEGIN INIT INFO
# Provides:            redis-server
# Required-Start:      $remote_fs $syslog
# Required-Stop:       $remote_fs $syslog
# Should-Start:        $local_fs
# Should-Stop:         $local_fs
# Default-Start:       2 3 4 5
# Default-Stop:        0 1 6
# Short-Description:   redis-server - Persistent key-value db
# Description:         redis-server - Persistent key-value db
### END INIT INFO

# Usage:
# cp /etc/redis/redis.conf /etc/redis/redis_server1.conf
# cp /etc/redis/redis.conf /etc/redis/redis_server2.conf
# start all instances:
# /etc/init.d/redis-server start
# start one instance:
# /etc/init.d/redis-server start server1
# stop all instances:
# /etc/init.d/redis-server stop
# stop one instance:
# /etc/init.d/redis-server stop server1
#
# Make sure to set the pidfile option correctly in the configs, e.g. for the
# example above in /etc/redis/redis_server1.conf set:
#     pidfile /var/run/redis/redis_server1.pid
# and in /etc/redis/redis_server2.conf set:
#     pidfile /var/run/redis/redis_server2.pid

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/redis-server
NAME=redis-server
DESC=redis-server

RUNDIR=/var/run/redis

test -x $DAEMON || exit 0

set -e

test -r /etc/default/$NAME && . /etc/default/$NAME


FILES=(/etc/redis/redis_*.conf)
# check for alternative config schema
if [ -r "${FILES[0]}" ]
then
  CONFIGS=()
  for FILE in "${FILES[@]}"
  do
    # remove prefix
    NAME=${FILE#/etc/redis/}
    # remove suffix
    NAME=${NAME%.conf}

    # check optional second param
    if [ $# -ne 2 ]
    then
      # add to config array
      CONFIGS+=($NAME)
    elif [ "redis_$2" == "$NAME" ]
    then
      # use only one redis
      CONFIGS=($NAME)
      break
    fi
  done

  if [ ${#CONFIGS[@]} == 0 ];
  then
    echo "Config not exist for: $2" >&2
    exit 1
  fi
else
  CONFIGS=(redis)
fi

CONFIG_NUM=${#CONFIGS[@]}
for ((i=0; i < $CONFIG_NUM; i++))
do
  NAME=${CONFIGS[${i}]}
  PIDFILE="/var/run/redis/${NAME}.pid"

  case "$1" in
    start)
      echo -n "Starting $DESC: "
      mkdir -p $RUNDIR
      touch $PIDFILE
      chown redis:redis $RUNDIR $PIDFILE
      chmod 755 $RUNDIR

      if [ -n "$ULIMIT" ]
      then
        ulimit -n $ULIMIT
      fi

      if start-stop-daemon --start --quiet --umask 007 --pidfile $PIDFILE --chuid redis:redis --exec $DAEMON -- /etc/redis/${NAME}.conf
      then
        echo "$NAME."
      else
        echo "failed"
      fi
      ;;

    stop)
      echo -n "Stopping $DESC: "
      if start-stop-daemon --stop --retry forever/TERM/1 --quiet --oknodo --pidfile $PIDFILE --exec $DAEMON
      then
        echo "$NAME."
      else
        echo "failed"
      fi
      rm -f $PIDFILE
      sleep 1
      ;;

    restart|force-reload)
      ARGS=($@)
      CONFIG=${ARGS[@]:1}
      ${0} stop $CONFIG
      ${0} start $CONFIG
      exit 0
      ;;

    status)
      echo -n "$DESC ($NAME) is "
      if start-stop-daemon --stop --quiet --signal 0 --pidfile $PIDFILE --exec $DAEMON
      then
        echo "running"
      else
        echo "not running"
      fi
      ;;

    *)
      N=/etc/init.d/$NAME
      echo "Usage: $N {start|stop|restart|force-reload|status}" >&2
      exit 1
      ;;
  esac
done

exit 0

the post was helpful

This is pretty awesome 👍

I wonder if a utility for configuring redis server configs interactively and from CLI would be needed to get this to upstream, or would add usability to multi-redis setup, like the a2enmod and a2ensite apache can enjoy.

doesn't this only work for a single instance as exec is basically switching the process from this script to whatever's being exec-ed?

Script was helpful, base on it I have made new script for 8 instances for privoxy server.. TY.

http://terminal28.com/anonymity-online-how-to-install-and-configure-squid3-tor-privoxy-debian-ubuntu-linux/

How to Use this Script. i am new in Ubuntu.