[SOLVED] Redeploy Docker image to aws ec2 instance

Issue

I have uploaded my docker image to the AWS EC2 instance. Now I have update my code and modify it, I have created a new docker image with a new tag and upload it to the same docker image repository and want to upload a new docker image to the same ec2 instance. i connect AWS with ssh client and write this line

docker run --restart=always -p 8000:8000 myDockerImageRepositary:myTag

it gives me an error

Error response from daemon: driver failed programming external connectivity on endpoint dreamy_engelbart (0be73435f9a848ead131e0e15160ce9cb7333fa84565291d027e6a9d6467c476): Bind for 0.0.0.0:8000 failed: port is already allocated.

I think the error is because my previous docker image is running on port 8000 but I have to update that docker image with the new one and don't know how to do that.

Thank you

Solution

Run sudo netstat -nltpu to confirm what application is running on that port. If it is docker then it means you probably didn't kill the previous docker container that was running on that port. If you don't have any other containers running, you can just stop all containers using this docker stop $(docker ps -a -q)

If you have other containers running, you can run docker ps to get details of the container running on that port, then run docker stop CONTAINER_ID to stop the container.

Answered By - tino1b2be

Answer Checked By - Katrina (WPSolving Volunteer)