installation of redis

Use Alibaba Cloud to install redis

Start redis

Create a configuration file

port 6379

logfile "redis-6381.log"

dir /data

appendonly yes

appendfilename appendonly.aof

# slaveof 127.1.0.1 6379

Start the redis image and cooperate with the container volume

# docker run -p 6379:6379  --name redis  -v /home/docker/redis/redis.conf:/etc/redis/redis.conf  -v /home/docker/redis/redis-data:/data  -d  redis redis-server /etc/redis/redis.conf

test

Test the connection. Use redis client to add data,
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View the data in the server The
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other two are similar, so far, the creation of the stand-alone version is complete.

Master-slave replication

Modify the configuration file of the slave device and add the ip of the master device.

port 6379

logfile "redis-6381.log"

dir /data

appendonly yes

appendfilename appendonly.aof

slaveof 192.168.1.10 6379

Enter the container of the slave device and check the status of the slave device.
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Enter the container of the master device and check the status

of the master device. Do the same operation on another slave device. The final result is shown in the figure below.

Test master-slave replication mode

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View the data in the slave device

Sentinel mode

Build a sentry container on each redis server

Sentinel's configuration file

port 26379

dir "/data"

logfile "sentinel-26379.log"

sentinel monitor mymaster 192.168.1.10 6379 2

sentinel down-after-milliseconds mymaster 10000

# sentinel failover-timeout mymaster 60000

# sentinel auth-pass mymaster 12345

Build

Start the sentry's container

# docker run -p 26379:26379 -v /home/docker/redis/redis-sentinel.conf:/etc/redis/redis-sentinel.conf -v /home/docker/redis/sentinel-data:/data -d redis redis-sentinel /etc/redis/redis-sentinel.conf

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View the status of the sentry.
The address information of the main device is displayed here.

The sentinels information here is different from the docker address I actually created, I don’t know why

Disconnect

Turn off the master device (192.168.1.10) to see if it can be switched normally.
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View the information of any sentry.

View the information of the redis container (on 1.11).

View the changes of another slave device.

1.11 As a new master device, you can also add data normally

, 1.7 is still a slave device, so it still cannot be created