How to launch a rails console in a Fargate container

问题

I would like to open a Rails console in a Fargate container to interact with my production installation

However after searching the web and posting in the AWS forum I could not find an answer to this question

Does anyone know how I can do this? This seems like a mandatory thing to have in any production environment and having no easy way to do it is kind of surprising coming from such a respected cloud provider as AWS

Thanks

回答1:

After trying lots of things, I found a way to open a Rails console pointing to my production environment, so I will post it here in case somebody come accross the same issues

To summarise I add a rails application deployed on Fargate connected to a RDS postgres database

What I did is creating a VPN client endpoint to the VPC hosting my Rails app and my RDS database

Then after being connected to this VPN, I simply run my rails production container (with the same environment variables) overriding the container command to run the console startup script (bundle exec rails c production)

Being run on my local machine I can normally attach a TTY to this container and access my production console

I think this solution is good because it allow any developper working on the project to open a console without any costs incurred and a well-though security policy on the AWS end ensure that the console access is secure, plus you don't have to expose your database outside of your VPC

Hope this helped someone

回答2:

You cannot ssh to the underlying host when you are using the Fargate execution type for ECS. This means that you cannot docker exec into a running container.