This error means the service does not integrate with the load balancer. Troubleshoot failed container health checks After that, we check the access logs of the load balancer for more information about errors.Then we set the response time out value correctly.First, we confirm there is a successful response from the backend without delay.In this case, our Support Techs recommend the steps below: (service AWS-Service) (port 8080) is unhealthy in target-group due to (reason Health checks failed with these codes: The network access control list for the subnet didn’t allow traffic from the targets to the load balancer nodes on the ephemeral ports.However, the target didn’t respond before the idle timeout period elapsed. Load balancer establishes a connection to the target.Load balancer fails to establish a connection to the target before the connection timeout expired.We need to ensure the backend database connection is successful.Ī 504 error can be due to any of the following reasons:.Check if the ping port and the health check path configure correctly.Check the application logs for application errors.We can monitor the CPU and memory metrics of the service.Define a minimum health check grace period.If not, then the load balancer could de-register the container from itself. We need to make sure that we have the correct configuration of ping port value for the load balancer health.If the container maps to port 80, we confirm that the container security group allows inbound traffic on port 80 for the load balancer.In case we receive either of the above errors, our Support Techs recommend the following troubleshooting methods: They are as following: (service AWS-service) (port 8080) is unhealthy in (target-grouparn:uxyztargetgroup/aws-targetgroup/123456789) due to (reason Health checks failed with these codes: ) or (service AWS-Service) (port 8080) is unhealthy in target-group tf-20190411170 due to (reason Health checks failed) Health Check Failures on Amazon ECS Tasks on AWS Fargate Today, let us see how we can troubleshoot this issue. Here, at Bobcares, we assist our customers with several AWS queries as part of our AWS Support Services. Health Check Failures on Amazon ECS Tasks on AWS Fargate? We can help you.
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