Redis Installation in linux

Redis Install linux

Redis is an open Source, in-memory data stricture store, used as database, cache and message broker. Redis server can be installed and configured inside the main box (Server machine) or outside the box as a separate machine. Here you go with the installation/setup process of Redis server.

Download Redis

Redis 3.0 introduces Redis Cluster, a distributed implementation of Redis with automatic data sharding and fault tolerance, important speed improvements under certain workloads, improved AOF rewriting, and more.




wget http://download.redis.io/releases/redis-3.0.7.tar.gz

Installation

The suggested way of installing Redis is compiling it from sources as Redis has no dependencies other than a working GCC compiler and libc. Installing it using the package manager of your Linux distribution is somewhat discouraged as usually the available version is not the latest.

In order to compile Redis follow this simple steps:

Copy the distribution to your favorite folder where you want to do the installation.

Install Development tools and Jemalloc

Redis have dependency with Development tools like gcc and gcc-c++. We have to install those packages in the operating system. Follow below commands for different operating systems.

--------------------Development Tools installation --------------

Centos:

yum -y update

yum groupinstall 'Development Tools'

Red-hat/centos:

yum -y update

yum -y install gcc gcc-c++ make

Ubuntu:

apt-get install build-essential

------------------------------End------------------------------------

-----------------Jemalloc Installation-------------------------------

Jemalloc:

cd redis-home/deps

make hiredis jemalloc linenoise lua

cd ..

Install Ruby and Rubygems

cd redis-home/redis-3.0.7/utils

yum install ruby

yum install rubygems

Install Redis

Install:

cd redis-home/redis-3.0.7

make install

gem install redis

Configure cluster-create:

cd /redis-3.0.7/utils/create-cluster/

vi create-cluster

Change the HOST name with your ip address which you are going to use in application and change the port to 6379.

# Settings

PORT=6379

TIMEOUT=2000

NODES=6

REPLICAS=1

------------------------------------

-----------------------------------------

-------------------------------------------------

if [ "$1" == "create" ]

then

    HOSTS=""

    while [ $((PORT < ENDPORT)) != "0" ]; do

        PORT=$((PORT+1))

        HOSTS="$HOSTS 192.168.1.10:$PORT"

    done

    ../../src/redis-trib.rb create --replicas $REPLICAS $HOSTS

    exit 0

fi

# Save the file

                                                       

Redis -start and stop

Start Redis:

./cluster-create start

Stop Redis:

./cluster-create stop

Redis - create cluster

Start Redis:

./cluster-create start

Create Redis:

./cluster-create create

Stop Redis:

./cluster-create stop

Reference

http://redis.io/topics/cluster-tutorial

http://redis.io/topics/quickstart

Check If Redis is working

External programs talk to Redis using a TCP socket and a Redis specific protocol. This protocol is implemented in the Redis client libraries for the different programming languages. However to make hacking with Redis simpler Redis provides a command line utility that can be used to send commands to Redis. This program is called redis-cli.

The first thing to do in order to check if Redis is working properly is sending a PING command using redis-cli:

Below example show how you can connect to Node having port 6380.

command:

cd redis-home/redis-3.0.7/utils

redis-cli -c -p 6380

  

Set a sample value:

redis 127.0.0.1:6379> set mykey somevalue

OK

Get the value:

redis 127.0.0.1:6379> get mykey

"somevalue"