Kubernetes Topics \\ [[https://kubernetes.io/docs/home/?path=users&persona=app-developer&level=foundational|Documentation]] \\ ====== Resources ====== ==== Quick Links ==== * Dashboard: [[http://k8s:8080/api/v1/namespaces/kube-system/services/monitoring-grafana/proxy|(local cluster - k8s)]] * Dashboard (proxied): * Tunnel: ''ssh -L 18443::443 k8s'' //(discover DashboardIP as in instructions below)// * [[https://localhost:18443/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/]] ====== Installation & Configuration ====== **Ubuntu:**[[https://microk8s.io/#quick-start]]snap install microk8s --classic **Start & Stop:** * ''microk8s.start'' * ''microk8s.stop'' **Standard Services:** microk8s.enable dns storage istio registry ingress dashboard metrics-server * ''microk8s.enable dashboard'' * ''microk8s.enable registry'' * ''microk8s.enable istio'' * ''microk8s.enable ...'' * ''microk8s.disable ...'' **Tricks:** * Shell in pod: * ''kubectl get pods'' * ''kubectl get pod garden-7dd9f6bc88-pp87l'' * ''kubectl exec -it garden-7dd9f6bc88-pp87l -- /bin/bash'' \\ * Discover dashboard IP:microk8s.kubectl get all --all-namespaces |grep kubernetes-dashboard | grep ClusterIP * Discover dashboard token: microk8s.kubectl -n kube-system get secret microk8s.kubectl -n kube-system describe secret default-token-{xxxxx} * ''ln -s /snap/bin/microk8s.docker /usr/local/bin/docker'' * Install ''S2I'' from: [[https://github.com/openshift/source-to-image/releases]] * Build docker image elsewhere and save/load into local k8s: * ''docker save mynewimage > mynewimage-docker.tar'' * Transfer file to microk8s server * ''microk8s.docker load < mynewimage-docker.tar'' * Move a running container: * First, commit a snapshot to a new image: ''docker commit //// mynewimage'' * Then, follow the load/save steps above