How to Install and Configure Redis-Server on Centos/ Fedora Server

‘Redis’ is an Open source key-value data store. Key values are more complex types like

Hashes, Lists, Sets or Sorted Sets. It is a highly scalable data store which is shared by

multiple processes, multiple applications, or multiple Servers.

Steps to install ‘Redis’:

Step-1

Install prerequisites packages for the ‘Redis’ server #yum install make gccwget

Step-2

Download Redis Packages and unzip #wgethttp://redis.googlecode.com/files/redis-2.2.12.tar.gz #tar -xf redis-2.2.12.tar.gz

Step-3

we are ready to install Redis from the source. #cd redis-2.2.12 #makez #make install

Step- 4

Now we will modify the default configuration of the Redis and change the location of the

database. We would also change the log notices to a production acceptable level and

the location of the log file. #mkdir /etc/redis/var/lib/redis #sed -e "s/^daemonize no$/daemonize yes/" -e "s/^dir \.\//dir \/var\/lib\/redis\//" -e "s/^loglevel debug$/loglevel notice/" -e "s/^logfilestdout$/logfile

\/var\/log\/redis.log/" redis.conf > /etc/redis/redis.conf

Step-5

Add the ‘redis’ init script. #vi /etc/init.d/redis-server

Add the below lines

#!/bin/bash PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin DAEMON=/usr/local/bin/redis-server

DAEMON_ARGS=/etc/redis/redis.conf NAME=redis-server DESC=redis-server PIDFILE=/var/run/redis.pid

test -x $DAEMON || exit 0 test -x $DAEMONBOOTSTRAP || exit 0 set -e

case "$1" in start) echo -n "Starting $DESC: " touch $PIDFILE chownredis:redis $PIDFILE if start-stop-daemon --start --quiet --umask 007 --pidfile $PIDFILE --chuidredis:redis --exec $DAEMON --

background -- $DAEMON_ARGS then echo "$NAME." else echo "failed" fi ;; stop) echo -n "Stopping $DESC: " if start-stop-daemon --stop --retry 10 --quiet --oknodo --pidfile $PIDFILE --exec $DAEMON then echo "$NAME." else echo "failed" fi rm -f $PIDFILE ;; restart|force-reload) ${0} stop ${0} start ;; *) echo "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload}" >&2 exit 1 ;; esac

exit 0

Note:Give appropriate permission to the init script chmodu+x redis-server

Step-6

To run the ‘redis’ server at startup we need to add it to the chkconfig list. #/sbin/chkconfig --add redis-server #/sbin/chkconfig --level 345 redis-server on

Step-7

Finally we are ready to start the Redis Server. # /etc/init.d/redis-server start

Conclusion:

‘Redis’ also supports datatypes such as Transitions, Publish and Subscribe. ‘Redis ’ is

considered more powerful than ‘Memcache’ . It would be smart to bring ‘Redis’ into

practice and put ‘Memcache’ down for a while.