Kubectl Commands

Get list of resource Types

kubectl api-resources

Other Options

kubectl api-resources --namespaced=true      # All namespaced resources
kubectl api-resources --namespaced=false     # All non-namespaced resources
kubectl api-resources -o name                # All resources with simple output (only the resource name)
kubectl api-resources -o wide                # All resources with expanded (aka "wide") output
kubectl api-resources --verbs=list,get       # All resources that support the "list" and "get" request verbs
kubectl api-resources --api-group=extensions # All resources in the "extensions" API group

Connect to the cluster

gcloud container clusters get-credentials <cluster name> --zone us-central1-c --project <project name>

Get pods

kubectl get pods

Get deployment

kubectl get deployments

Deploy a deployment

kubectl create deployment <name> --image=<docker id>/<container>:<version>

Scale a deployment

kubectl scale deployment <name of deployment> --replicas <how many replicas>

Create an LB

kubectl expose deployment <deployment name> --type=LoadBalancer --port=<external port to expose on>

See services

kubectl get services

Resize a node pool in the cluster

gcloud container clusters resize <cluster anme> --node-pool <node pool name> --num-nodes=<number>

Enable HPA

kubectl autoscale deployment <deployment name> --max=<max containers> --min=<number> --cpu-percent=<number>

Get HPA

kubectl get hpa

Delete HPA

kubectl delete hpa <hpa name>

Auto-scaling the cluster

gcloud container clusters update <cluster name> --enable-autoscaling --min-nodes=<min> --max-nodes=<max>

Create a config map

kubctl create configmap <name> --from-literal=<variable>=<data>

Describe the details of something

kubectl describe <thing>

Create a secret

kubectl create secret generic <name> --from-literal=<password name>=<password>

Update an image

kubectl set image deployment <deployment name> <deployment name>=<docker hub id and version>

Get the service IP range

SVCRANGE=$(echo '{"apiVersion":"v1","kind":"Service","metadata":{"name":"tst"},"spec":{"clusterIP":"1.1.1.1","ports":[{"port":443}]}}' | kubectl apply -f - 2>&1 | sed 's/.*valid IPs is //')
echo $SVCRANGE

Enable Autocomplete

source <(kubectl completion bash)

### Update the image for the deployment


kubectl set image deployment.v1.apps/nginx-deployment nginx=nginx:1.9.1 --record
### View the rollout status

kubectl rollout status deployment.v1.apps/nginx-deployment
### View Deployment History

kubectl rollout history deployment nginx-deployment
### Rollback the deployment

kubectl rollout undo deployments nginx-deployment
### Create config map from file

kubectl create secret generic <name> \
 --from-file=key.json=$HOME/<file>.json

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