Devops

Core concepts Cluster Architecture Master node: orchestrate nodes → schedule, monitor, worker, state, manage cluster Worker node: host applications as container Master node components: ETCD: database of the state of the cluster KUBE-SCHEDULER: schedule pods to worker nodes CONTROLLER-MANAGER NODE-CONTROLLER: orchestrate nodes REPLICATION-CONTROLLER: orchestrate replication groups KUBE-APISERVER: expose k8s cluster from external thought api Worker node components: CONTAINER RUNTIME: container runtime engine KUBELET: agent that run in every node, for receive api call from api server KUBE-PROXY: manage communication between container, nodes Container runtime interface Container runtime interface CRI: allow to use k8s with all container runtime ...

Jenkins pipelines running on Kubernetes offer powerful customization using pod templates. In this post, you’ll learn how to define a custom Kubernetes agent pod in a YAML template located in a different Git repository, and then use that in your Jenkins pipeline. 🧱 Requirements Jenkins with the Kubernetes plugin A Git repo hosting your custom pod template YAML Access to a Kubernetes cluster (like EKS, GKE, or Minikube) Git credentials stored in Jenkins (e.g., via credentialsId) 📁 Repository Structure We assume you have two Git repositories: ...