In Kubernetes, a secret is a way to store sensitive information, such as passwords, tokens, or keys, that can be used by pods or services running in the cluster. Secrets are stored in a base64-encoded format, which provides some level…
A Kubernetes Scheduled Job is designed to run automatically based on a schedule defined in the cron format. However, there are a few ways to trigger a Scheduled Job manually. Edit the schedule You can edit the schedule in the…
In Kubernetes, the image pull policy is a configuration option that determines how the system should handle pulling container images. There are three possible values for the image pull policy: Always: The system will always pull the latest version of…
There are serval ways to connect an external image registry (such as harbor) to your openshift environments. In installation phase, you can add image registry in installation-config.yaml, and set credentials in pull-secret. When your cluster is up and running, update…
This article will describe how to run multiple commands on container startup phase in kubernetes. Kubernetes provides several ways to run multiple command for a container, such as command parameter in container spec, or provide an entry point shell. bellow…
By default, when you install your openshift 4 cluster on bare metal manually, the internal image registry is not available, and the imagestream, buildconfigs may not working as you want, if you deploy a pod from the default template, the…
When you trying to run a simple container with shell (/bin/bash) on a Kubernetes cluster, the container exits when its main process exits. you will see your pod in completed state. To keep your pod/container always running on kubernetes, you…
NFS storageclass is an easy to use storage option for kubernetes and openshift platform. I will describe how to setup a nfs server, and deploy and setup nfs storage class in openshift 4 environment. Table of Contents Deploy nfs server…
In this tutorial, i will describe how to install and setup an openshift container platform (OCP) 4.10 cluster with high available architecture manually. This is a step by step guide for installing an openshift high available cluster., and i will…
