如何在AWS的Docker容器中查找正在运行的进程的状态？

Question

I have an application (a task) running in containers in AWS. I need to know its current state and also need to make sure it runs without the container exiting and killing it while in progress.
It's a C++ binary.

1. Service - Creating a service will ensure that its fail-safe but how can I read this information from the outside. I could exit the application with a proper exit code but the service will just recreate the task again and again in this manner which is a burden.

Is there a recommended way to communicate from the process within an ECS container to know what it is doing at the moment?

Answer 1

There can be two ways to view ECS container logs:

1. SSH into your EC2 instance created by ECS, run docker ps to find container ids and docker logs container_id to see what is going on in the container. (This will not work if you have created your cluster using Fargate as it does not creates EC2 instance, it only creates a network interface)

2. Configure Cloudwatch on AWS to view container activities. To configure logs you have to create a new version of your task defenition > open container > under storage and logging uncheck auto configure CloudWatch logs > select log driver as awslogs > tag your group, region and prefix keys. To view your logs, click on the Task tab in your cluster > open your task > expand your container > bottom section shows Log Configuration with a link to your container logs.