Kubernetes

Example chain for kubernetes

Kubernetes

The kubernetes config element is the primary purpose of konfigadm, configuring machines so that they have all pre-requisites met for running kubeadm

  • Install and mark the specific versions of kubeadm, kubelet, kubectl, kubernetes-cni
  • Install a container runtime if not specified
  • Prepull images required to run kubernetes
  • Set any sysctl values that are required
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konfigadm apply -c k8s.yml

k8s.yml 

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kubernetes:
  version: 1.14.1

The config can also be specified via stdin: echo "kubernetes: {version: 1.14.1}" | konfigadm minify -c -

Specifying a kubernetes app is equivalent to:

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packageRepos:
 - deb https://apt.kubernetes.io/ kubernetes-xenial main #+debian
 - https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64 #+redhat
gpg:
 - https://packages.cloud.google.com/apt/doc/apt-key.gpg #+debian
 - https://packages.cloud.google.com/yum/doc/yum-key.gpg #+redhat
 - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg #+redhat
packages:
 - kubelet=1.14.1
 - kubeadm=1.14.1
 - kubectl=1.14.1
sysctls:
 vm.swapinness: 1