Docker deployment Redis Sentinel High Availability Cluster

1. Create a directory

mkdir /usr/local/docker
cd /usr/local/docker
mkdir redis sentinel

2. Create a profile Redis

nano self-installing tool

cd redis
nano docker-compose.yml

Enter the following

version: '3.1'
services:
  master:
    image: redis
    container_name: redis-master
    ports:
      - 6379:6379

  slave1:
    image: redis
    container_name: redis-slave-1
    ports:
      - 6380:6379
    command: redis-server --slaveof redis-master 6379

  slave2:
    image: redis
    container_name: redis-slave-2
    ports:
      - 6381:6379
    command: redis-server --slaveof redis-master 6379

Save and Exit

ctrl + o
Enter
ctrl + x  

Start Redis service

docker-compose up -d

3, create a configuration file Sentinel

cd ../sentinel
nano docker-compose.yml

Enter the following

version: '3.1'
services:
  sentinel1:
    image: redis
    container_name: redis-sentinel-1
    ports:
      - 26379:26379
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    volumes:
      - ./sentinel1.conf:/usr/local/etc/redis/sentinel.conf

  sentinel2:
    image: redis
    container_name: redis-sentinel-2
    ports:
      - 26380:26379
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    volumes:
      - ./sentinel2.conf:/usr/local/etc/redis/sentinel.conf

  sentinel3:
    image: redis
    container_name: redis-sentinel-3
    ports:
      - 26381:26379
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    volumes:
      - ./sentinel3.conf:/usr/local/etc/redis/sentinel.conf

Save and exit

nano sentinel.conf

Enter the following

port 26379
dir /tmp
sentinel monitor mymaster IP 6379 2
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 180000
sentinel deny-scripts-reconfig yes

IP Office and fill out your own IP
replicate three profiles

cp sentinel.conf sentinel1.conf
cp sentinel.conf sentinel2.conf
cp sentinel.conf sentinel3.conf

Start Sentinel Service

docker-compose up -d

4, open Redis client

Enter the name, address, port number, click below to test the connection, the connection is successful