Docker case analysis: Building a Redis service

Use the official redis image to build the database service. The current latest version corresponds to version 5.0.8. Mount local data directories, configuration directories, and log directories to facilitate data backup and migration.

1 Create mount directories and files

Create a configuration directory ~/docker/redis/conf, a data directory ~/docker/redis/data, and a log directory ~/docker/redis/log on the host, and create a file ~/docker/redis/conf/redis.conf in the configuration directory. The contents of the configuration file are as follows.

logfile /log/redis.log

The final directory structure is as follows:

2 Pull the redis image

Use the latest official version of redis image, currently version 5.0.8.

docker pull redis

3 Create a container and start it

Mount local configuration, data, and log directories into the container.

# --name redis The container name is redis
# -p 6379:6379 binds local port 6379 to container port 6379 (redis service port)
conf:/usr/local/etc/redis/redis.conf -v ~/docker/redis/log/:/log/ -v ~/docker/redis/data:/data -d redis redis-server /usr/local/etc/redis/redis.conf --appendonly yes

After the container is started, you can view the redis operation status through the local ~/docker/redis/log/redis.log.

4 Redis usage

Use the local redis-cli client to connect to redis and add the key value v=1. After performing several operations, the appendonly.aof file in the ~/docker/redis/data directory already has relevant data content.

5 Simulating the effect of data migration

If you stop the redis container at this time and start a new redis container to mount the same directory, the redis in the new container will already contain the data in the previous container.

docker run --name redis1 -p 6379:6379 -v ~/docker/redis/conf/redis.conf:/usr/local/etc/redis/redis.conf -v ~/docker/redis/log/:/log/ -v ~/docker/redis/data:/data -d redis redis-server /usr/local/etc/redis/redis.conf --appendonly yes

If you need more customized configuration, you can add it in the local ~/docker/redis/conf/redis.conf file

Refer to the official redis image

The above is my personal experience. I hope it can give you a reference. I also hope that you will support 123WORDPRESS.COM.