Link mysql to application in docker

Question

Hi how would I connect a mysql container to another container so that my application in one of those container can use Mysql? Based on this reference I need to run this

docker run --name some-app --link some-mysql:mysql -d application-that-uses-mysql

But I have no idea what does some-app mean and the application-that-uses-mysql? does it mean the container ID that will use it? below is the list of the running container

Answer 1

--name some-app refers to the container name you want to assign to the container you are running.

application-that-uses-mysql refers to the image which you are using. This image requires mysql and you have connecte myqsl to this image by using the command --link some-mysql:mysql.

However, Links are deprecated but you still can connect to other containers using networks. An answer here should be able to help you out in setting the connections.

Edit: Removed duplicate and provided complete answer.

Answer 2

--name some-app gives the newly started container the name some-app.

--link some-mysql:mysql links the container with name some-mysql (this is the one running MySQL) to the new container so that it can be accessed as mysqlwithin the container.

application-that-uses-mysqlis the name of the image containing your app.

If you are unsure about the meaning of some parameters, there is always the documentation.