Kubernetes Notes

Kubernetes.md

##Setup## Setting up kubernetes locally references:

• (https://github.com/kubernetes/minikube)
• (https://deis.com/docs/workflow/quickstart/provider/minikube/boot/)
• Notes on usage with Docker for Mac
• Install for xhyve driver

Setup minikube:

• brew cask install minikube
• brew install bash-completion
• brew install kubectl ** brew upgrade kubernetes-cli - upgrade
• brew install docker-machine-driver-xhyve
• sudo chown root:wheel $(brew --prefix)/opt/docker-machine-driver-xhyve/bin/docker-machine-driver-xhyve
• sudo chmod u+s $(brew --prefix)/opt/docker-machine-driver-xhyve/bin/docker-machine-driver-xhyve
• minikube config set vm-driver xhyve

For VPN:

• Update gateway, edit .minikube/machines/minikube/config.json and setting the following: ** "IPAddress": "10.254.254.1/24", ** "HostOnlyCIDR": "10.254.254.1/24",
• Remove routes for local network
• sudo route delete 10.254.254.1/24 &> /dev/null
• sudo route add 10.254.254.1/24 -iface vboxnet1 &> /dev/null - i have a couple different virtual boxes running, vboxnet0 if only one

To change minikube setup:

• minikube stop
• Make changes
• minikube delete ** If really broken, run sudo rm -rf ~/.minikube
• minikube start

##Running## Minikube commands:

• minikube start - Starts the cluster, use -v 7 for debugging startup
• minikube stop - Stops the cluster
• minikube status - Checks the status of a mini kube running
• minikube ssh systemctl status localkube - gets details on the running kube cluster

Kubectl commands:

• kubectl get pods --context=minikube - get a list of pods in the cluster
• kubectl cluster-info - validate cluster
• kubectl run hello-minikube --image=grc.io/google_container/echoserver:1.4 --port=8080 - run simple app
• kubectl config use-context minikube - sets context at the global level

Troubleshooting

• (kubernetes/minikube#1234) - unable to connect to server dialog
• (kubernetes/minikube#1099) - vpn issues