iamvikasbisht, Author at DEVOPS DONE RIGHT.

GitHub: Self-Hosted Runner on Kubernetes – How to Setup

GitHub Actions is a powerful CI/CD tool that lets developers build, test, and deploy software through customizable workflows. It provides a managed infrastructure for executing tasks, but sometimes it’s necessary to use a self-hosted infrastructure.

In this blog, we will detail how to set up and leverage self-hosted runners with GitHub Actions, aiming to optimize workflow and improve your development process.

GitHub Actions can use two types of runners: hosted and self-hosted.

Hosted runners are provided by GitHub and run on virtual machines in the cloud.
Self-hosted runners are machines that you set up and manage yourself. They run on your infrastructure, and you can customize them to meet your needs.

Continue reading “GitHub: Self-Hosted Runner on Kubernetes – How to Setup”

Know the Role of K8S Service Account in Granting Access

Have you ever wondered that when you access the API Server through kubectl you are authenticated through the API controller, but how will you do the same from the pod side? Here the Service Account role comes into play. As k8s definition itself says “Processes in containers inside pods can also contact the apiserver. When they do, they are authenticated as a particular Service Account (for example, default).”

Things we should know about service Account,

Created in a namespace.
Used to allow processes inside pods, access to the API Server.
Default service account = default (no access to the API server).
Create your own service account.
- Use it in a RoleBinding or ClusterRoleBinding.
- Use the service account secret to obtain the authentication token & CA certificate.

What we will be covering today,

Creating a pod (that gets automatically created in default Service Account)
Will create a Service Account
Creating a deployment that will be using appsa Service Account.
RBAC

How To Debug a Bash Shell Script?

The fastest way to debug a Bash script is to enable debug mode. This prints each command before execution, helping you find problems.

In this tutorial, we’ll explore various techniques for debugging Bash shell scripts. Although the Bash shell doesn’t have a built-in debugger, we can effectively use certain commands and constructs to aid in this process. First, we’ll understand how to use the set command for script debugging. Next, we’ll discuss specific uses of the set and trap commands. Finally, we’ll outline some strategies for debugging a script that’s already running.

What is Shell?

The UNIX shell program interprets user commands which are either directly entered by the user, or which can be read from a file called the shell script or shell program. Shell scripts are interpreted, not compiled. The shell reads commands from the script line per line and searches for those commands on the system. Continue reading “How To Debug a Bash Shell Script?”