How to connect with MySQL DB running as container

问题:

This question already has an answer here:

• Connect Java to a MySQL database 12 answers

Can some give me any idea about how to connect with my mysql db which is running as a container in Docker on a virtual machine?

I have no idea about it, please help me.

What I am trying to do is :- I am writing a java program on my local machine and now I want to establish a jdbc connection with mysql. My MySQL DB is running as a docker container on a Virtual machine.

Does someone has any idea.

Connection con = DriverManager.getConnection("jdbc:mysql://10.0.2.15/"what should I put here","root","myrootpassword");

my ip address for the container is 172.17.0.2 and my guest ip is 10.0.2.15. My sql is running on port 3306.

Thanks in Advance

回答1:

Your docker container should be able to bind its mysql port to any port on the VM. You do it with the -p VMPort:containerPort option of docker run.

https://docs.docker.com/engine/reference/run/#expose-incoming-ports

So this command

docker run -p 3306:3306 your-sql-container

Will publish the 3306 port of your container to the 3306 port of your VM.

At that point you should be able to hit your SQL with

Connection con = DriverManager.getConnection("jdbc:mysql://10.0.2.15:3306/databaseName","root","myrootpassword");

I used your VM address and the binded port on the VM. You should replace databaseName with the actual name of your DB.

回答2:

You will need to put Database name there. conn = DriverManager.getConnection("jdbc:mysql://hostname:port/dbname","username", "password"); Check out this link

Also, it would not hurt to add port in your connector.