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How does the Jenkins plugin work with Kubernetes?
Based on the Scaling Docker with Kubernetes article, automates the scaling of Jenkins agents running in Kubernetes. The plugin creates a Kubernetes Pod for each agent started, and stops it after each build. Agents are launched as inbound agents, so it is expected that the container connects automatically to the Jenkins controller.
How to create a node in Kubernetes plugin?
Defines a Kubernetes pod template that can be used to create nodes. The annotation key. The annotation value. The Kubernetes cloud to use to schedule the pod. If unset, the first available Kubernetes cloud will be used.
How to run workers in Kubernetes and Docker images?
Go back to the Jenkins, add a new Credential: Check its connection – click on the Test Connection, must see the Connected to Kubernetes 1.18+ message: Save the settings. Fill the fields of the pod and its default container, set the jenkinsci/jnlp-slave as the Docker image:
How is a pod template created in Jenkins?
The podTemplate step defines an ephemeral pod template. It is created while the pipeline execution is within the podTemplate block. It is immediately deleted afterwards. Such pod templates are not intended to be shared with other builds or projects in the Jenkins instance.
How to get started with the Jenkins GKE plugin?
Getting started with the Jenkins GKE plugin is easy. First, provide a single set of credentials to the plugin to discover the GKE clusters across your GCP projects. Then, after choosing a project and cluster, configure the path to the manifests in the Jenkins workspace from which you’d like to deploy.
How to configure Kubernetes CLI with multiple credentials?
Within the Jenkins dashboard, select a Job and then select “Configure” Scroll down to the “Build Environment” section Select “Configure Kubernetes CLI (kubectl) with multiple credentials” In the “Credential” dropdown, select the credentials to authenticate on the cluster or the kubeconfig stored in Jenkins.
How to use a single kubeconfig file in Jenkins?
The recommended way to use a single KubeConfig file with multiples clusters, users, and default namespaces is to configure a Context for each of them, and use the contextName parameter to switch between them (see Kubernetes documentation ). The Jenkins ID of the plain KubeConfig file. URL of the API server’s.