Building Docker Images in Kubernetes with Kaniko for Jenkins CI
Jul 28, 2024
Kaniko in Kubernetes with Jenkins The Case for Kaniko If we need to build a Docker image inside a k8s cluster, Kaniko is the tool for the job. I tried using k8s agent executers in Jenkins on my k3s cluster running on Linux containers. Since I’m running containerd as the container runtime in k3s, and did not want to run a priviledged container for building the images, I did some research on the subject, which made me stumble upon Kaniko1.…
K8s Resources: Controller vs Operator
Jul 27, 2024
Controller Kubernetes controllers are integral components of the platform, responsible for maintaining the desired state of native resources within a cluster. Controllers are designed to manage built-in resources, such as ReplicaSets, Deployments, and Services. Controllers follow the Kubernetes “controller pattern,” a control loop that monitors changes in the desired state and updates the cluster accordingly. For example, when a Deployment is created, the Deployment controller ensures that the specified number of replicas for a particular application is running.…
K8s Resources: Deployment vs ReplicaSet
Jul 18, 2024
Deployment A Deployment is a K8s object that oversees a group of identical pods, ensuring that a certain number of replicas are always running. It offers a declarative method for managing Kubernetes objects, enabling automated rollouts and rollbacks of containerized applications. Additionally, a Deployment handles the deployment of new application versions and facilitates rollbacks to previous versions by creating and updating a ReplicaSet with the new configuration. A ReplicaSet maintains the desired number of pod replicas, creating new ones if any fail to ensure the desired state is preserved.…
Kubernetes Setup on Proxmox with K3s, Terraform and Ansible
Jul 17, 2024
Kubernetes (aka K8s) vs K3s K3s is a lightweight K8s distribution suitable for edge computing and resource-constrained environments where a low resource footprint is sought. When combined with Proxmox, a powerful open-source virtualization platform, it allows for efficient and flexible cluster management. Utilizing Terraform for infrastructure provisioning and Ansible for configuration management streamlines the deployment process, ensuring a consistent and repeatable setup. Prerequisites Assuming we have Proxmox VE, along with Terraform and Ansible installed on their, we need to ensure our Proxmox server has a properly configured network bridge to allow communication between VMs and the external network.…
Certified Kubernetes Administrator Exam
Oct 02, 2023
A messy begining It all started when my good friend Pandula suggested we buy the CKA certification exam with the CyberMonday discount applied. So I complied, however, I did not have a credit card (debit cards weren’t accepted) to my name, which was required for paying for the purchase. That’s when I suggested he buy the exam for me as well with his credit card. He bought the exam bundle, except to our confusion he’d been logged in with his account at the time of purchase, resulting in two purchases of the same exam bundle sitting in his LF account.…