无法连接到 Mysql 5.7 运行为 docker 容器从 docker 主机使用 Z81C3BE090DAD54BF527E1

Question

After going through the following links from SOF- I still am facing the issue and there is no reasoning or solution available.

References:

• Connecting to mysql docker container
• Connect to Docker MySQL container from localhost?

Mysql 5.7 is running as container in my local machine. Once the server is up, connecting to the server using root or the new user created fails over localhost/0.0.0.0/127.0.0.1. Even after disabling the firewald, the connectivity failed with the same error. I might have done something terribly wrong about this connectivity. Any advice would be helpful.

version: '3.5'
services:
  service:
    image: mysql:5.7
    #build:
    #  context: ./
    #  dockerfile: Dockerfile
    environment:
      MYSQL_USER: user
      MYSQL_PASSWORD: manage
      MYSQL_ROOT_PASSWORD: manage
      MYSQL_DATABASE: testapp
    ports:
      - published: 3306
        target: 3306

Following is the output after docker-compose up -d

docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                               NAMES
45ba02e6e457        mysql:5.7           "docker-entrypoint.s…"   52 seconds ago      Up 50 seconds       0.0.0.0:3306->3306/tcp, 33060/tcp   

Below are the attempts to connect to the mysql container.

mysql -u root -h localhost -pmanage
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

mysql -u root -h 0.0.0.0 -pmanage
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

mysql -u root -h 127.0.0.1 -pmanage
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

IP of the running container works fine. But this is not a solution as the IP can change with time.

mysql -u root -h 172.31.0.2 -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.30 MySQL Community Server (GPL)

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Oracle is a registered trademark of Oracle Corporation and/or its
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owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

I am not looking for solutions with another docker command. How to connect to mysql container from docker host using mysql client.

Answer 1

You need to use the --protocol=tcp in your connection url.

mysql -u root -h localhost --protocol=tcp

Your mysql is running inside the docker container. So, you have to connect through TCP and local socket is not available for that. This is basically duplicate of this question.