Redis Cluster on Centos 7

1. Install redis on all nodes

yum install -y epel-release

yum install -y redis

2. Configure master

vi /etc/redis.conf  # update the following line: bind 127.0.0.1

firewall-cmd --add-port=6379/tcp

3. Configure slaves

vi /etc/redis.conf  # update the following line: slaveof 6379

4. Restart and enable redis on all nodes

systemctl enable --now redis

5. Login to master and create a key to validate

127.0.0.1:6379> info replication

127.0.0.1:6379> redis-cli

127.0.0.1:6379> set 'a' 1

6. verify on the nodes that the replication is working

127.0.0.1:6379> redis-cli

127.0.0.1:6379> get 'a'  # you must get correct value set from the master

127.0.0.1:6379> info replication