Using docker to install and deploy redis on CentOS

1 Reference documents

[Redis - Official Image | Docker Hub](https://hub.docker.com/_/redis)

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2 install Redis

1. Pull Redis Mirror image .

   docker pull redis
   

2. Create corresponding directories and files locally .

   mkdir -p /usr/local/docker/redis
   mkdir -p /usr/local/docker/redis/data
   touch /usr/local/docker/redis/redis.conf
   

3. Edit profile , You can download the configuration file from the official website redis.conf.

   vim /docker/redis/redis.conf
   

   # Redis The default is not to run as a daemon , This configuration item can be modified , Use yes Enable daemons 
   daemonize no
   
   #  Appoint Redis Listening port , The default port is 6379
   port 6379
   
   #  The bound host address , Do not bind the local of the container 127.0.0.1 Address , Because it cannot be accessed outside the container 
   bind 0.0.0.0
   
   # If you need a password, open 
   requirepass 123456
   
   #  Persistence 
   appendonly yes
   

4. start-up docker Containers .

   docker run -p 6379:6379 --name redis --restart=always -v /usr/local/docker/redis/redis.conf:/etc/redis/redis.conf -v /usr/local/docker/redis/data:/data -d redis redis-server /etc/redis/redis.conf 
   

   

   explain ：

   • docker run redis # from redis Mirror run container
   • -p 6379:6379 # Map local 6379 Port to container 6379 port ,: The former is the local port
   • –name redis # Set the container name to redis, Convenient for future use docker ps Conduct management
   • –restart=always # Always restart the container when it exits
   • -v /usr/local/docker/redis/redis.conf:/etc/redis/redis.conf # Associate local /usr/local/docker/redis/redis.conf File into container /etc/redis/redis.conf,: The former is the local directory
   • -v /usr/local/docker/redis/data:/data # Associate local /docker/redis/data Go into the container /data Catalog , This is storage redis Catalog of data , To facilitate future upgrades redis, And data can be preserved
   • -d # Background start , Use this method to start , be redis.conf in daemonize Must be set to no, Otherwise it will fail to start redis-server /etc/redis/redis.conf # Start in the container redis-server The order of , Mainly for loading configuration

5. start-up Redis.

   #  To access containers , You can use 
   docker exec -it redis bash
   #  Or use it directly redis-cli Access inside container redis
   docker exec -it redis redis-cli
   

   

3 to open up Redis Firewall port

1. Query whether the specified port is opened .

   firewall-cmd --query-port=3306/tcp
   

2. Add the specified port to be opened .

   firewall-cmd --add-port=3306/tcp --permanent
   

3. Look again , It is found that the query is still no, You need to execute firewall command overloading .

   firewall-cmd --reload