ipedrazas · January 28, 2017 10:45 · Jan 28, 2017
diff --git a/gistfile1.txt b/gistfile1.txt
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+
+
+## Useful Commands
+
+Get kubectl version
+
+    kubectl version
+
+Get cluster info:
+
+    kubectl cluster-info
+
+
+## Viewing, Finding Resources
+
+
+### Columnar output
+
+    kubectl get services                          # List all services in the namespace
+    kubectl get pods --all-namespaces             # List all pods in all namespaces
+    kubectl get pods -o wide                      # List all pods in the namespace, with more details
+    kubectl get rc <rc-name>                      # List a particular replication controller
+    kubectl get pods -l env=production            # List all pods with a label env=production
+
+### Verbose output
+
+    kubectl describe nodes <node-name>
+    kubectl describe pods <pod-name>
+    kubectl describe pods <rc-name>               # Lists pods created by <rc-name> using common prefix
+
+### List Services Sorted by Name
+
+    kubectl get services --sort-by=.metadata.name
+
+### List pods Sorted by Restart Count
+
+    kubectl get pods --sort-by=.status.containerStatuses[0].restartCount
+
+### Get the version label of all pods with label app=cassandra
+
+    kubectl get pods --selector=app=cassandra rc -o 'jsonpath={.items[*].metadata.labels.version}'
+
+### Get ExternalIPs of all nodes
+
+    kubectl get nodes -o jsonpath='{.items[*].status.addresses[?(@.type=ExternalIP)].address}'
+
+
+### Check which nodes are ready
+    kubectl get nodes -o jsonpath='{range .items[*]}{@.metadata.name}:{range @.status.conditions[*]}{@.type}={@.status};{end}{end}'| tr ';' "\n"  | grep "Ready=True"
+
+
+## Creating Objects
+
+    kubectl create -f ./file.yml
+    kubectl create -f ./file1.yml -f ./file2.yaml
+    kubectl create -f ./dir
+    kubectl create -f http://www.fpaste.org/279276/48569091/raw/
+
+### Create multiple YAML objects from stdin
+    cat <<EOF | kubectl create -f -
+    apiVersion: v1
+    kind: Pod
+    metadata:
+      name: busybox-sleep
+    spec:
+      containers:
+      - name: busybox
+        image: busybox
+        args:
+        - sleep
+        - "1000000"
+    ---
+    apiVersion: v1
+    kind: Pod
+    metadata:
+      name: busybox-sleep-less
+    spec:
+      containers:
+      - name: busybox
+        image: busybox
+        args:
+        - sleep
+        - "1000"
+    EOF
+
+# Create a secret with several keys
+    cat <<EOF | kubectl create -f -
+    apiVersion: v1
+    kind: Secret
+    metadata:
+      name: mysecret
+    type: Opaque
+    data:
+      password: $(echo -n "Sup3rS3cr3t" | base64)
+      username: $(echo -n "superuser" | base64)
+    EOF
+
+
+## Modifying and Deleting Resources
+
+
+    kubectl label pods <pod-name> new-label=awesome                  # Add a Label
+    kubectl annotate pods <pod-name> icon-url=http://goo.gl/XXBTWq   # Add an annotation
+    kubectl delete pod pingredis-XXXXX
+
+## Scaling up & down
+
+    kubectl scale --replicas=3 deployment nginx
+
+
+### Interacting with running Pods
+
+
+    kubectl logs <pod-name>
+    kubectl logs -f <pod-name>
+
+    kubectl run -i --tty busybox --image=busybox -- sh      # Run pod as interactive shell
+    kubectl attach <podname> -i                             # Attach to Running Container
+    kubectl port-forward <podname> <local-and-remote-port>  # Forward port of Pod to your local machine
+    kubectl port-forward <servicename> <port>               # Forward port to service
+    kubectl exec <pod-name> -- ls /                         # Run command in existing pod (1 container case)
+    kubectl exec <pod-name> -c <container-name> -- ls /     # Run command in existing pod (multi-container case)
+
+
+## Checking that the DNS works:
+
+    kubectl exec busybox -- nslookup kubernetes
+    kubectl exec busybox -- nslookup kubernetes.default
+    kubectl exec busybox -- nslookup kubernetes.default.svc.cluster.local
+
+
+## Create an expose a deployment
+    kubectl run nginx --image=nginx:1.9.12
+    kubectl expose deployment nginx --port=80 --type=LoadBalancer
+
+## Create a ConfigMap from a file
+
+    kubectl create configmap nginx-ghost --from-file=configs/ghost.conf --namespace=ghost
+
+## Create a secret from a file
+
+    kubectl create secret generic db-user-pass --from-file=./username.txt --from-file=./password.txt
+
+## Handy bash Aliases
+
+    alias k="kubectl"
+    alias kc="kubectl create -f"
+    alias kg="kubectl get"
+    alias pods="kubectl get pods"
+    alias allpods="kubectl get pods --all-namespaces"
+    alias rcs="kubectl get rc"
+    alias svcs="kubectl get services"
+    alias dep="kubectl get deployment"
+    alias kd="kubectl describe"
+    alias kdp="kubectl describe pod "
+    alias kds="kubectl describe service "
+    alias nodes="kubectl get nodes"
+    alias klogs="kubectl logs"
+    alias ns="kubectl get ns"
+    alias deploys="kubectl get deployment"
+    alias events="kubectl get events"
+    alias kexec="kubectl exec -it "
+    alias secrets="kubectl get secrets"
+    alias igs="kubectl get ingress"
+    alias contexts="kubectl config get-contexts"
+    alias ktop="kubectl top nodes"
+
+## Handy bash functions
+
+
+### Delete pod, don't wait
+
+    function dp(){
+      kubectl delete pod $1 --grace-period=0
+    }
+
+### Secrets related functions
+
+    function encode(){
+      echo -n "$1" | base64
+    }
+
+
+    function decode(){
+      echo -n "$1" | base64 -D
+    }
+
+    function gettoken(){
+      kubectl get secret $(kubectl get secret | grep default | awk '{print $1}') -o yaml | grep "token:" | awk '{print $2}' | base64 -D
+    }
+
+
+### set context quickly
+
+    function context(){
+      kubectl config use-context $1
+    }
+
+### run bash in a pod
+
+    function dex(){
+      docker exec -it $1 bash
+    }
+