Introduction Monitoring Amazon ECS tasks and containers is critical for diagnosing performance bottlenecks, optimizing resource usage, and ensuring application reliability. Common methods, like de...

Introduction Deploying applications using the AWS Cloud Development Kit (CDK) provides a way to provision and manage cloud infrastructure as code. However, occasionally users may encounter errors ...

Introduction According to the Kubernetes documents, when a container in a pod consumes more memory than its limit, the pod is killed. A Pod killed by OOM (OOMKilled Pod) will be restarted if the r...

Introduction When deploying application on Kubernetes cluster, people may use NodePort service to make their application accessible. Encountering the error message failed to allocate a nodePort: r...

Introduction Depending on the use case, sometimes people would use hostPath to mount a file or directory from the host node’s filesystem into their Pods.1 An interesting observation is that when a...

Introduction Sometimes when containers running from the same image show different starting time in different Kubernetes cluster, we would normally first compare the different resources in the clus...

Introduction Sometimes you may wonder which process is responsible for sending the DNS request on your servers. While capturing DNS packets with tcpdump is possible, identifying the process ID(PID...

Introduction Amazon ECS has being supporting Amazon Elastic File System(EFS) over the years.1 AWS provides resources including tutorials and several Knowledge Center articles and video2 to guide c...

Introduction / Summary Occasionally, customers may experience their EC2 instances failing the instance status check1 unexpectedly. However, these instances typically return to a healthy state afte...

Introduction Over the past year, my role and responsibilities as an AWS Cloud Support Engineer has significantly expanded. Apart from handling daily cases, I’ve been focused on enhancing AWS Knowl...