install-redis-aws.sh

#!/bin/bash
# from here: http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
# and here: https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
###############################################
# To use: 
# wget https://gist.githubusercontent.com/ffabreti/0512fb5705926ae7f5ee34536a0e28db/raw/install-redis.sh
# chmod 777 install-redis.sh
# ./install-redis.sh
###############################################
function die {
	echo "Error: $1" 1>&2
	exit 1
}
echo "*****************************************"
echo " 1. Prerequisites: Install updates, set time zones, install GCC and make"
echo "*****************************************"
yum -y install gcc gcc-c++ make wget                     || die 'yum install'
echo "*****************************************"
echo " 2. Test if exists, Download, Untar and Make Redis 2.6"
echo "*****************************************"
if [ ! -f /usr/local/bin/redis-server ]; then
    echo "redis-server executable not found! Downloading..."
    cd /usr/local/src                                         || die 'entering /usr/local/src'
    wget http://download.redis.io/redis-stable.tar.gz    || die 'wget'
    tar xzf redis-stable.tar.gz                          || die 'untar'
    rm redis-stable.tar.gz -f
    cd redis-stable                                           || die 'entering redis-stable'
    chown -R `id -u -n` *                                || die 'altering redis-stable files owner'
    chown -R `id -u -n` .                                || die 'altering redis-stable dir owner'
    make                                                 || die 'making binaries'
    echo "*****************************************"
    echo " 3. Create Directories and Copy Redis Files"
    echo "*****************************************"
    mkdir /etc/redis /var/lib/redis
    cp -f src/redis-server src/redis-cli /usr/local/bin  || die 'copying binaries'
else
    cp /etc/redis/redis.conf .                                || die 'copying redis.conf'
    echo "*****************************************"
    echo " 3. redis-server executable found on /usr/local/bin. Continuing..."
    echo "*****************************************"
fi

echo "*****************************************"
echo " 4. Configure Redis.Conf"
echo "*****************************************"
echo " Editing redis.conf as follows:"
echo " 1: ... daemonize yes"
echo " 2: ... bind 127.0.0.1"
echo " 3: ... dir /var/lib/redis"
echo " 4: ... loglevel notice"
echo " 5: ... logfile /var/log/redis.log"
echo "*****************************************"
sed -e "s/^daemonize no$/daemonize yes/" -e "s/^# bind 127.0.0.1$/bind 127.0.0.1/" -e "s/^dir .*/dir \/var\/lib\/redis\//" -e "s/^loglevel .*/loglevel notice/" -e "s/^logfile .*/logfile \/var\/log\/redis.log/" redis.conf > new.redis.conf || die 'altering redis.conf' 
cp -f new.redis.conf  /etc/redis/redis.conf
echo "*****************************************"
echo " 5. Writing init Script"
echo "*****************************************"
# ---------------------------- definition of serverScript variable --------------------------------
cat  > ./redis-server-init-script  <<"INITSCRIPT"
#!/bin/sh
# 
# redis - this script starts and stops the redis-server daemon
# Originally from - https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
# From - http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
#      - https://github.com/saxenap/install-redis-amazon-linux-centos/blob/master/redis-server
#
# chkconfig:   2345 85 15 
# description:  Redis is a persistent key-value database
# processname: redis-server
# config:      /etc/redis/redis.conf
# config:      /etc/sysconfig/redis
# pidfile:     /var/run/redis.pid

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

redis="/usr/local/bin/redis-server"
prog=$(basename $redis)

REDIS_CONF_FILE="/etc/redis/redis.conf"

[ -f /etc/sysconfig/redis ] && . /etc/sysconfig/redis

lockfile=/var/lock/subsys/redis

start() {
    [ -x $redis ] || exit 5
    [ -f $REDIS_CONF_FILE ] || exit 6
    echo -n $"Starting $prog: "
    daemon $redis $REDIS_CONF_FILE
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    echo -n $"Stopping $prog: "
    killproc $prog -QUIT
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    stop
    start
}

reload() {
    echo -n $"Reloading $prog: "
    killproc $redis -HUP
    RETVAL=$?
    echo
}

force_reload() {
    restart
}

rh_status() {
    status $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart|configtest)
        $1
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    force-reload)
        force_reload
        ;;
    status)
        rh_status
        ;;
    condrestart|try-restart)
        rh_status_q || exit 0
	    ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
        exit 2
esac
INITSCRIPT

# ---------------------------- end of serverScript variable definition --------------------------------
echo "*****************************************"
echo " 6. Move and Configure Redis-Server"
echo "*****************************************"
mv redis-server-init-script /etc/init.d/redis-server             || die 'moving init-script'
chmod 755 /etc/init.d/redis-server                               || die 'chmoding init-script'
echo "*****************************************"
echo " 7. Auto-Enable Redis-Server"
echo "*****************************************"
chkconfig --add redis-server                                     || die 'chkconfig --add'
chkconfig --level 345 redis-server on                            || die 'chkconfig --level'
echo "*****************************************"
echo " 8. Start Redis Server"
echo "*****************************************"
service redis-server start                                       || die 'service start'
echo "*****************************************"
echo " Complete!"
echo " You can test your redis installation using the redis console:"
echo "   $ src/redis-cli"
echo "   redis> set foo bar"
echo "   OK"
echo "   redis> get foo"
echo "   bar"
echo "*****************************************"