AWS ECS Service Health Check scenarios with '503 Service Unavailable' for Java Spring Boot Application
I'm a bit lost with I'm trying to debug I'm attempting to set up Quick question that's been bugging me - I'm running a Java Spring Boot application in a container on AWS ECS, but my health checks are failing with a '503 Service Unavailable' behavior... My ECS task definition has a health check path set to `/actuator/health`, which is a standard Spring Boot actuator endpoint. However, when ECS tries to check the health of the service, it returns 503 errors intermittently. I've tried adjusting the timeout settings in my health check configuration. Here’s what my task definition looks like: ```json { "containerDefinitions": [ { "name": "my-spring-boot-app", "image": "myrepo/myapp:latest", "essential": true, "healthCheck": { "command": ["CMD-SHELL", "curl -f http://localhost:8080/actuator/health || exit 1"], "interval": 30, "timeout": 5, "retries": 3, "startPeriod": 60 } } ] } ``` The application itself is up and running, as I can reach it directly from my browser or using `curl` from the command line. I also checked the logs, and I see that the application is receiving requests but is unable to respond in time for the health checks. I suspect that the scenario might be related to resource allocation since I have the task running with 512 CPU and 1024 MiB of memory. During peak times, the application responds slowly, which might be causing the health check failures. I've tried increasing the memory limit, but the question continues. Can anyone provide insights on optimizing the health check configuration or improving the performance of the Spring Boot application to reduce these 503 errors? Are there recommended practices for configuring health checks in AWS ECS for Spring Boot applications? Also, I've read about using container insights and CloudWatch for monitoring, but I'm not sure how to effectively use them to diagnose this scenario further. This is part of a larger application I'm building. For context: I'm using Java on macOS. This issue appeared after updating to Java 3.11. Thanks for any help you can provide!