Redis active / standby configuration dockercompose version

redis In the master-slave configuration, the slave server is read-only and cannot be written , Automatically switch between active and standby through sentinel mode , The program configuration needs to configure all nodes

Prepare two virtual machines , System centos7

ip Distribute

host1:192.168.3.53

host2:192.168.3.54

install docker

yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum list docker-ce --showduplicates | sort -r
yum install -y docker-ce-18.09.0 docker-ce-cli-18.09.0
systemctl start docker.service
systemctl enable docker.service
docker version

install docker-compose

curl -L https://get.daocloud.io/docker/compose/releases/download/1.29.2/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose
docker-compose version

host1 Of docker-compose.yml

 version: '3'
 services:
     redis-rs1:
          container_name: 'redis_rs1'
          image: 'redis:5.0.3'
          restart: always
          volumes:
          - ~/commpwr/redis/data:/data
          - ~/commpwr/redis/conf/redis.conf:/etc/redis/redis.conf
          ports:
          - 6379:6379
          command: redis-server /etc/redis/redis.conf --port 6379 --requirepass 123456 --appendonly yes
     sentinel:
          container_name: 'sentinel'
          image: 'redis:5.0.3'
          restart: always
          volumes:
          - ~/commpwr/sentinel/conf/sentinel.conf:/etc/redis/sentinel.conf
          ports:
          - 26379:26379
          command: redis-sentinel /etc/redis/sentinel.conf

host2 Of docker-compose.yml

 version: '3'
 services:
     redis-rs2:
          container_name: 'redis_rs2'
          image: 'redis:5.0.3'
          restart: always
          volumes:
          - ~/commpwr/redis/data:/data
          - ~/commpwr/redis/conf/redis.conf:/etc/redis/redis.conf
          ports:
          - 6379:6379
          command: redis-server /etc/redis/redis.conf --port 6379 --requirepass 123456 --appendonly yes --slaveof 192.168.3.53 6379 --masterauth 123456
     sentinel:
          container_name: 'sentinel'
          image: 'redis:5.0.3'
          restart: always
          volumes:
          - ~/commpwr/sentinel/conf/sentinel.conf:/etc/redis/sentinel.conf
          ports:
          - 26379:26379
          command: redis-sentinel /etc/redis/sentinel.conf

redis.conf download

Official website Redis configuration | Redis

5.0 edition

wget https://raw.githubusercontent.com/redis/redis/5.0/redis.conf

Modify the following content after downloading

 Comment out  bind
 Add or modify masterauth 123456

host1 Of sentinel.conf

# bind 127.0.0.1 192.168.1.1
# protected-mode no
port 26379
#daemonize yes
#pidfile /var/run/redis-sentinel.pid
logfile "sentinel.log"
sentinel myid 02ba5344dfb96dc699bcefc2e1d105190c0e85e3
sentinel deny-scripts-reconfig yes
sentinel monitor master001 192.168.3.53 6379 1
sentinel down-after-milliseconds master001 10000
sentinel auth-pass master001 123456

sentinel config-epoch master001 4
sentinel leader-epoch master001 5

sentinel known-replica master001 192.168.3.54 6379
# Generated by CONFIG REWRITE
dir "/data"
sentinel known-sentinel master001 192.168.3.54 26379 f5e14a1e2d376544dcc2ce88a37a710d5c8a65a4
sentinel known-sentinel master001 192.168.3.53 26379 02ba5344dfb96dc699bcefc2e1d105190c0e85e3
sentinel current-epoch 11
sentinel announce-ip "192.168.3.53"
sentinel announce-port 26379
masterauth "123456"

host2 Of sentinel.conf

# bind 127.0.0.1 192.168.1.1
# protected-mode no
port 26379
#daemonize yes
#pidfile /var/run/redis-sentinel.pid
logfile "sentinel.log"
sentinel myid f5e14a1e2d376544dcc2ce88a37a710d5c8a65a4
sentinel deny-scripts-reconfig yes
sentinel monitor master001 192.168.3.53 6379 1
sentinel down-after-milliseconds master001 10000
sentinel auth-pass master001 123456

sentinel config-epoch master001 4
sentinel leader-epoch master001 11

sentinel known-replica master001 192.168.3.54 6379
# Generated by CONFIG REWRITE
dir "/data"
sentinel known-sentinel master001 192.168.3.53 26379 02ba5344dfb96dc699bcefc2e1d105190c0e85e3
sentinel current-epoch 11
sentinel announce-ip "192.168.3.54"
sentinel announce-port 26379

Firewall configuration

firewall-cmd --permanent --add-port=6379/tcp
firewall-cmd --permanent --add-port=26379/tcp
firewall-cmd --reload

Switch drill

host1 perform

docker stop redis_rs1

host2 redis Console execution

info replication

  You can see host2 Turned into master

host1 perform

docker start redis_rs1

host1redis Console execution

info replication

You can see host1 It becomes a slave node and connects host2 The primary node of .