What’s the easiest way to update my ECS service when a new container is pushed to ECR?

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Asked By SillyPenguin42 On

I'm trying to figure out the simplest method to automatically update my ECS service every time I push a new container to ECR. I've come across several options like Step Functions, CI/CD pipelines, and EventBridge, but I'm looking for the most straightforward solution. Since I typically use the #latest tag, I find myself needing to manually update the service or trigger a new deployment each time. Is there a more efficient way to handle this?

6 Answers

Answered By TechSavvyGal88 On

I usually manage it through CI/CD myself. If you're consistently using the latest tag, a new deployment can be forced easily on your service. Alternatively, you could set up a Lambda function or CloudFormation stack that triggers on new image uploads to automatically update your task definition with the new image tag.

CuriousDev101 -

Using Lambda to automatically trigger a new deployment when there are new changes in ECR sounds like a solid approach! I haven’t tried it yet myself.

Answered By OceanBreeze29 On

The reality is that ECS needs to be told to reload the container, as it doesn't do this automatically. Using EventBridge could be your best bet for a hands-off approach, since it doesn’t depend on a CI/CD system. If AWS ever adds an auto-reload feature for ECS, that's likely how it would work behind the scenes.

Answered By CreativeCoder22 On

They actually have this feature built into AWS App Runner, which is a more managed service. That could be a sign of where they draw the line between managed functions and manual processes.

Answered By ECRUser42 On

I just manually force a new deployment for my development environment whenever I push updates to ECR. It’s simple for smaller projects.

Answered By DevGuru99 On

You could also specify a unique tag with a hash in your task definition instead of just using 'latest'. Plus, consider setting up a git sync so your stack updates automatically whenever you push changes to your git template. That way, you can manage separate branches for production, staging, and development, making deployments much smoother.

Answered By WorkflowWiz77 On

In an ideal setup, this should be handled through CI/CD so you can maintain control over the deployment process.

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