List Of server

192.168.3.31    redis01        a_master:6379    c_slave:6381
192.168.3.32    redis02        b_master:6380    a_slave:6379
192.168.3.33    redis03        c_master:6381    b_slave:6380

Install Redis

sudo yum install make gcc libc6-dev tcl screen telnet zlib zlib-devel readline readline-devel
wget http://download.redis.io/releases/redis-4.0.4.tar.gz
tar xvzf redis-4.0.4.tar.gz
mv redis-4.0.4 redis
cd redis
sudo make install
make test

Create config file

For all instance of redis change the port, pidfile, cluster-config-file, dir value accordingly
vi /redis/a_master.conf
##############################################################
bind 0.0.0.0
protected-mode no
port 6379
pidfile /var/run/redis_6379.pid
cluster-enabled yes
cluster-config-file nodes-6379.conf
cluster-node-timeout 15000
#Make sure following properties are added in each conf file
appendonly yes
save 900 1
save 300 10
save 60 10000
dir /home/vagrant/a_master/
##############################################################
start two redis instance in redis01 node:

screen -U -S a_master

redis-server a_master.conf

Ctrl+a+d

screen -U -S c_slave

redis-server c_slave.conf

Ctrl+a+d

Install Ruby

wget https://cache.ruby-lang.org/pub/ruby/2.2/ruby-2.2.4.tar.gz
tar -zxvf ruby-2.2.4.tar.gz
cd ruby-2.2.4
./configure
make
sudo make install

Install gem

wget https://rubygems.org/rubygems/rubygems-2.4.8.tgz --no-check-certificate
tar -xvzf rubygems-2.4.8.tgz
cd rubygems-2.4.8
sudo /usr/local/bin/ruby setup.rb config && sudo /usr/local/bin/ruby setup.rb setup && sudo /usr/local/bin/ruby setup.rb install

Install redis gem

wget https://rubygems.org/downloads/redis-4.1.0.gem
sudo /usr/local/bin/gem install redis-4.1.1.gem

Cluster Setup

Add Master

cd redis/src
./redis-trib.rb create 192.168.3.31:6379 192.168.3.32:6380 192.168.3.33:6381

Add Slave

./redis-trib.rb add-node --slave --master-id 7f46599d998e24b8eb07513eb525b90f9b0488e3 192.168.3.32:6379 192.168.3.31:6379
./redis-trib.rb add-node --slave --master-id c8bd0b335a3f75619163f42a77b2257a16dca1c1 192.168.3.33:6380 192.168.3.32:6380
./redis-trib.rb add-node --slave --master-id 89c4b22476c10ba54840fd5e3fe920a5c72fed72 192.168.3.31:6381 192.168.3.33:6381

To backup Redis data

cp /home/vagrant/a_master/dump.rdb /home/vagrant/a_master/backup/dump_$(date +%Y%m%d%H%M%S).rdb
cp /home/vagrant/a_master/appendonly.aof /home/vagrant/a_master/backup/appendonly_$(date +%Y%m%d%H%M%S).aof
cp /home/vagrant/c_slave/dump.rdb /home/vagrant/c_slave/backup/dump_$(date +%Y%m%d%H%M%S).rdb
cp /home/vagrant/c_slave/appendonly.aof /home/vagrant/c_slave/backup/appendonly_$(date +%Y%m%d%H%M%S).aof

cp /home/vagrant/b_master/dump.rdb /home/vagrant/b_master/backup/dump_$(date +%Y%m%d%H%M%S).rdb
cp /home/vagrant/b_master/appendonly.aof /home/vagrant/b_master/backup/appendonly_$(date +%Y%m%d%H%M%S).aof
cp /home/vagrant/a_slave/dump.rdb /home/vagrant/a_slave/backup/dump_$(date +%Y%m%d%H%M%S).rdb
cp /home/vagrant/a_slave/appendonly.aof /home/vagrant/a_slave/backup/appendonly_$(date +%Y%m%d%H%M%S).aof

cp /home/vagrant/c_master/dump.rdb /home/vagrant/c_master/backup/dump_$(date +%Y%m%d%H%M%S).rdb
cp /home/vagrant/c_master/appendonly.aof /home/vagrant/c_master/backup/appendonly_$(date +%Y%m%d%H%M%S).aof
cp /home/vagrant/b_slave/dump.rdb /home/vagrant/b_slave/backup/dump_$(date +%Y%m%d%H%M%S).rdb
cp /home/vagrant/b_slave/appendonly.aof /home/vagrant/b_slave/backup/appendonly_$(date +%Y%m%d%H%M%S).aof

To Restore

1. Stop all redis instance
2. Rename the existing dump.rdb and appendonly.aof
3. mv backed up data to data directory.
4. Start all redis instance.

To insert data

sudo pip install redis-py-cluster

then run below command

python data.py

To view/delete/save data

python get-data.py