docker-dockerandk8s

https://hub.docker.com/r/alexpruss/dockerandkubectl

A docker image containing both docker and kubernetes. Used by the author to run k8s inside a Jenkins pipeline with the Jenkins-Kubernetes plugin.

Tags

• latest, 1.6.4 - kubectl v1.6.4, docker v18

Usage

This image extends a docker image and adds an executable kubectl. kubectl still needs to be configured, however. You'll need to copy a kubectl config into the container and either move it to ~/.kube/config or run kubectl with the --kubeconfig flag.

Example - running in a scripted Jenkins pipeline

Assuming you're using the Jenkins k8s plugin, with your config file saved in Jenkins as a credential:

//'dockerk8s' is defined at the start of the pipeline.
container('dockerk8s') {
  withCredentials([file(credentialsId: 'kube-config', variable: 'k8sconfig')]) {
      sh "cp $env.{k8sconfig} ~/.kube/config"
      sh "kubectl get pods" //(or whatever command you want)
  }
}

Example - running locally

Assuming your configuration is in a file called kubeconfig:

In one terminal:

docker pull alexpruss/dockerandkubectl:1.6.4

docker run -it alexpruss/dockerandkubectl:1.64

In a second terminal:

docker ps (find the container id)

docker cp kubeconfig $containerId:~/.kube/config

In the first terminal again:

kubectl get pods (or whatever command you want)