Helper setup to edit .yaml files with Vim:

• VIM Setup for Yaml files

List of general purpose commands for Kubernetes management:

• PODS
• Create Deployments
• Scaling PODs
• POD Upgrade / History
• Services
• Volumes
• Secrets
• ConfigMaps
• Ingress
• Horizontal Pod Autoscalers

Put the following lines in ~/.vimrc:

" Yaml file handling
autocmd FileType yaml setlocal ts=2 sts=2 sw=2 expandtab
filetype plugin indent on
autocmd FileType yaml setl indentkeys-=<:>

" Copy paste with ctr+c, ctr+v, etc
:behave mswin
:set clipboard=unnamedplus
:smap <Del> <C-g>"_d
:smap <C-c> <C-g>y
:smap <C-x> <C-g>x
:imap <C-v> <Esc>pi
:smap <C-v> <C-g>p
:smap <Tab> <C-g>1> 
:smap <S-Tab> <C-g>1<

Keyboard hints:

• ctrl + f: auto indent line (requires INSERT mode)

$ kubectl get pods
$ kubectl get pods --all-namespaces
$ kubectl get pod monkey -o wide
$ kubectl get pod monkey -o yaml

Create single deployment

$ kubectl run monkey --image=monkey --record

$ kubectl scale deployment/POD_NAME --replicas=N

$ kubectl rollout history deployment/DEPLOYMENT_NAME

$ kubectl rollout undo deployment/DEPLOYMENT_NAME --to-revision=N

List services

$ kubectl get services

Expose PODs as services (creates endpoints)

$ kubectl expose deployment/monkey --port=2001 --type=NodePort

Lits Persistent Volumes and Persistent Volumes Claims:

$ kubectl get pv
$ kubectl get pvc

$ kubectl get secrets
$ kubectl create secret generic --help
$ kubectl create secret generic mysql --from-literal=password=root
$ kubectl get secrets mysql -o yaml

$ kubectl create configmap foobar --from-file=config.js
$ kubectl get configmap foobar -o yaml

List DNS-PODs:

$ kubectl get pods --all-namespaces |grep dns

Check DNS for pod nginx (assuming a busybox POD/container is running)

$ kubectl exec -ti busybox -- nslookup nginx

Note: kube-proxy running in the worker nodes manage services and set iptables rules to direct traffic.

Commands to manage Ingress for ClusterIP service type:

$ kubectl get ingress
$ kubectl expose deployment ghost --port=2368

Spec for ingress:

• backend

When heapster runs:

$ kubectl get hpa
$ kubectl autoscale --help