Access S3 from Kubernetes Pods and Nodes
If a container needs access to S3 buckets, this can be achieved with kubernetes node scope and Pod scope
CentOS 7 End of Life Remediation
CentOS Linux 7 reached end of life (EOL) on June 30, 2024.
Docker images analysis
Skipped all instruments that need Docker Desktop
Analyzing container image tools is essential for automating the inspection process, saving time and ensuring consistency across development environments. They assist in optimizing images for better performance and resource utilization, aligning with best practices in containerization.
By integrating such tools into CI/CD pipelines, teams can ensure that image layer analysis becomes an integral part of the software development lifecycle.
DIVE A tool for exploring a docker image, layer contents, and discovering ways to shrink the size of your Docker/OCI image.
Decrypting Jenkins secrets and more
Well known tricks ro decrypt Jenkins secrets and some extra.
Gitlab Kubernetes runner with Docker in Docker
Docker in Docker (DIND) is a powerful tool for running Docker containers within Docker containers. This allows developers to easily create and test Docker images within a container environment that closely resembles the production environment. This can help to catch issues early in the development process and ensure that the application is running as expected in the production environment
Sync files: rsync and rclone
rsync and rclone are two popular open-source tools for synchronizing files and directories. While they share some similarities, there are also some differences between them that make them ideal for different use cases.
Build x86 Docker images on Mac M1
If you’re a Mac user who has been using Docker Desktop for your development environment, you might be interested in exploring an alternative.
UTM: Run x86 VM on Mac M1
UTM is a full-featured system emulator and virtual machine host for iOS and macOS. It is based off of QEMU.
Cloud Nuke
Managing resources and objects in your cloud account is an essential aspect of maintaining an efficient and cost-effective infrastructure. Occasionally, you may need to delete specific types of resources and objects to streamline your operations, optimize costs, or meet compliance requirements.
Container App startup trigger in k8s
Application start delay in k8s containers
Stress/Load testing applicable. When you want to sping up a lot of pods; the application inside ech pod must start simultaneously with others.
The main problem is cluster autoscaling is slow, it means additional nodes will start with delay.
AWS specific case The idea here: prescale more nodes than required, so cluster autoscaling will not spend time to spin up new nodes
Assume we have EKS with unmanaged Node Groups as ASG.
Handling Network Retries
In a distributed environment, network retries are an essential mechanism to handle temporary failures in communication between different components. When using Docker containers, network retries can help to ensure the reliability and availability of containerized applications.
List Bash Variables By Name
Bash script variables and environment variables are both used in Bash scripting, but they have different scopes and lifetimes.