CODEWITHSUNDEEP
amazon-web-servicesdockerssh
user3338094
user3338094

Reputation: 93

ssh to docker container hosted on EC2

I want to run a docker container on EC2 and also I need to ssh into the container for debugging purposes. I have 2 ports open for ssh 22 and 8022 on my EC2 instance(security group applied). The problem is when I want to bind 22 port of my docker container to port 8022 then it tells address already in use. And the address is used by sshd program. If I kill the process then I cant ssh to the instance from my localhost. How can I overcome this deadlock?

Upvotes: 3

Views: 6647

Answers (1)

yamenk
yamenk

Reputation: 51886

As mentioned in the comments, you don't need to start ssh inside the container in order to go inside the container. You can use the docker exec command to go inside the container after you ssh into the EC2 instance by running:

docker exec -it <container-name> bash

If you still want to ssh into the container directly, then you need to do the following:

  1. Start the container and map port 22 inside to a free port outside;

    docker run -p 2222:22 ...

  2. After starting the container, exec into it and install ssh if not yet installed, and start the ssh service using something like systemctl start sshd

  3. ssh into the container, by using the ec2 instance IP and the mapped port

    ssh <container-user>@<ec2-instance-ip> -p 2222

This will connect to the ec2 instance and redirect you into the container due to the port mapping.

Upvotes: 6

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