Added back required restart=Never for busybox only

Author: StevenJDH

a.core_concepts.md

@@ -77,9 +77,9 @@ kubectl run nginx --image=nginx --dry-run=client -o yaml | kubectl create -n myn
 <p>
 
 ```bash
-kubectl run busybox --image=busybox --command -it -- env # -it will help in seeing the output
+kubectl run busybox --image=busybox --command --restart=Never -it -- env # -it will help in seeing the output
 # or, just run it without -it
-kubectl run busybox --image=busybox --command -- env
+kubectl run busybox --image=busybox --command --restart=Never -- env
 # and then, check its logs
 kubectl logs busybox
 ```
@@ -94,7 +94,7 @@ kubectl logs busybox
 
 ```bash
 # create a  YAML template with this command
-kubectl run busybox --image=busybox --dry-run=client -o yaml --command -- env > envpod.yaml
+kubectl run busybox --image=busybox --restart=Never --dry-run=client -o yaml --command -- env > envpod.yaml
 # see it
 cat envpod.yaml
 ```
@@ -234,13 +234,13 @@ Alternatively you can also try a more advanced option:
 # Get IP of the nginx pod
 NGINX_IP=$(kubectl get pod nginx -o jsonpath='{.status.podIP}')
 # create a temp busybox pod
-kubectl run busybox --image=busybox --env="NGINX_IP=$NGINX_IP" --rm -it -- sh -c 'wget -O- $NGINX_IP:80'
+kubectl run busybox --image=busybox --env="NGINX_IP=$NGINX_IP" --rm -it --restart=Never -- sh -c 'wget -O- $NGINX_IP:80'
 ``` 
 
 Or just in one line:
 
 ```bash
-kubectl run busybox --image=busybox --rm -it -- wget -O- $(kubectl get pod nginx -o jsonpath='{.status.podIP}:{.spec.containers[0].ports[0].containerPort}')
+kubectl run busybox --image=busybox --rm -it --restart=Never -- wget -O- $(kubectl get pod nginx -o jsonpath='{.status.podIP}:{.spec.containers[0].ports[0].containerPort}')
 ```
 
 </p>
@@ -318,9 +318,9 @@ kubectl exec -it nginx -- /bin/sh
 <p>
 
 ```bash
-kubectl run busybox --image=busybox -it -- echo 'hello world'
+kubectl run busybox --image=busybox -it --restart=Never -- echo 'hello world'
 # or
-kubectl run busybox --image=busybox -it -- /bin/sh -c 'echo hello world'
+kubectl run busybox --image=busybox -it --restart=Never -- /bin/sh -c 'echo hello world'
 ```
 
 </p>
@@ -332,7 +332,7 @@ kubectl run busybox --image=busybox -it -- /bin/sh -c 'echo hello world'
 <p>
 
 ```bash
-kubectl run busybox --image=busybox -it --rm -- /bin/sh -c 'echo hello world'
+kubectl run busybox --image=busybox -it --rm --restart=Never -- /bin/sh -c 'echo hello world'
 kubectl get po # nowhere to be found :)
 ```
 

b.multi_container_pods.md

@@ -9,7 +9,7 @@
 Easiest way to do it is create a pod with a single container and save its definition in a YAML file:
 
 ```bash
-kubectl run busybox --image=busybox -o yaml --dry-run=client -- /bin/sh -c 'echo hello;sleep 3600' > pod.yaml
+kubectl run busybox --image=busybox --restart=Never -o yaml --dry-run=client -- /bin/sh -c 'echo hello;sleep 3600' > pod.yaml
 vi pod.yaml
 ```
 
@@ -135,7 +135,7 @@ kubectl apply -f pod-init.yaml
 kubectl get po -o wide
 
 # Execute wget
-kubectl run box --image=busybox -it --rm -- /bin/sh -c "wget -O- IP"
+kubectl run box --image=busybox --restart=Never -it --rm -- /bin/sh -c "wget -O- IP"
 
 # you can do some cleanup
 kubectl delete po box

e.observability.md

@@ -142,7 +142,7 @@ kubectl delete -f pod.yaml
 <p>
 
 ```bash
-kubectl run busybox --image=busybox -- /bin/sh -c 'i=0; while true; do echo "$i: $(date)"; i=$((i+1)); sleep 1; done'
+kubectl run busybox --image=busybox --restart=Never -- /bin/sh -c 'i=0; while true; do echo "$i: $(date)"; i=$((i+1)); sleep 1; done'
 kubectl logs busybox -f # follow the logs
 ```
 
@@ -157,7 +157,7 @@ kubectl logs busybox -f # follow the logs
 <p>
 
 ```bash
-kubectl run busybox --image=busybox -- /bin/sh -c 'ls /notexist'
+kubectl run busybox --restart=Never --image=busybox -- /bin/sh -c 'ls /notexist'
 # show that there's an error
 kubectl logs busybox
 kubectl describe po busybox
@@ -173,7 +173,7 @@ kubectl delete po busybox
 <p>
 
 ```bash
-kubectl run busybox --image=busybox -- notexist
+kubectl run busybox --restart=Never --image=busybox -- notexist
 kubectl logs busybox # will bring nothing! container never started
 kubectl describe po busybox # in the events section, you'll see the error
 # also...

f.services.md

@@ -35,7 +35,7 @@ kubectl get ep # endpoints
 
 ```bash
 kubectl get svc nginx # get the IP (something like 10.108.93.130)
-kubectl run busybox --rm --image=busybox -it -- sh
+kubectl run busybox --rm --image=busybox -it --restart=Never -- sh
 wget -O- IP:80
 exit
 ```
@@ -46,7 +46,7 @@ or
 
 ```bash
 IP=$(kubectl get svc nginx --template={{.spec.clusterIP}}) # get the IP (something like 10.108.93.130)
-kubectl run busybox --rm --image=busybox -it --env="IP=$IP" -- wget -O- $IP:80 --timeout 2
+kubectl run busybox --rm --image=busybox -it --restart=Never --env="IP=$IP" -- wget -O- $IP:80 --timeout 2
 # Tip: --timeout is optional, but it helps to get answer more quickly when connection fails (in seconds vs minutes)
 ```
 
@@ -128,7 +128,7 @@ kubectl create deploy foo --image=dgkanatsios/simpleapp --port=8080 --replicas=3
 
 ```bash
 kubectl get pods -l app=foo -o wide # 'wide' will show pod IPs
-kubectl run busybox --image=busybox -it --rm -- sh
+kubectl run busybox --image=busybox --restart=Never -it --rm -- sh
 wget -O- POD_IP:8080 # do not try with pod name, will not work
 # try hitting all IPs to confirm that hostname is different
 exit
@@ -159,7 +159,7 @@ kubectl get endpoints foo # you will see the IPs of the three replica nodes, lis
 
 ```bash
 kubectl get svc # get the foo service ClusterIP
-kubectl run busybox --image=busybox -it --rm -- sh
+kubectl run busybox --image=busybox -it --rm --restart=Never -- sh
 wget -O- foo:6262 # DNS works! run it many times, you'll see different pods responding
 wget -O- SERVICE_CLUSTER_IP:6262 # ClusterIP works as well
 # you can also kubectl logs on deployment pods to see the container logs
@@ -210,8 +210,8 @@ kubectl create -f policy.yaml
 
 # Check if the Network Policy has been created correctly
 # make sure that your cluster's network provider supports Network Policy (https://kubernetes.io/docs/tasks/administer-cluster/declare-network-policy/#before-you-begin)
-kubectl run busybox --image=busybox --rm -it -- wget -O- http://nginx:80 --timeout 2                          # This should not work. --timeout is optional here. But it helps to get answer more quickly (in seconds vs minutes)
-kubectl run busybox --image=busybox --rm -it --labels=access=granted -- wget -O- http://nginx:80 --timeout 2  # This should be fine
+kubectl run busybox --image=busybox --rm -it --restart=Never -- wget -O- http://nginx:80 --timeout 2                          # This should not work. --timeout is optional here. But it helps to get answer more quickly (in seconds vs minutes)
+kubectl run busybox --image=busybox --rm -it --restart=Never --labels=access=granted -- wget -O- http://nginx:80 --timeout 2  # This should be fine
 ```
 
 </p>

g.state.md

@@ -17,7 +17,7 @@ kubernetes.io > Documentation > Tasks > Configure Pods and Containers > [Configu
 Easiest way to do this is to create a template pod with:
 
 ```bash
-kubectl run busybox --image=busybox -o yaml --dry-run=client -- /bin/sh -c 'sleep 3600' > pod.yaml
+kubectl run busybox --image=busybox --restart=Never -o yaml --dry-run=client -- /bin/sh -c 'sleep 3600' > pod.yaml
 vi pod.yaml
 ```
 Copy paste the container definition and type the lines that have a comment in the end:
@@ -165,7 +165,7 @@ kubectl get pv # will show as 'Bound' as well
 Create a skeleton pod:
 
 ```bash
-kubectl run busybox --image=busybox -o yaml --dry-run=client -- /bin/sh -c 'sleep 3600' > pod.yaml
+kubectl run busybox --image=busybox --restart=Never -o yaml --dry-run=client -- /bin/sh -c 'sleep 3600' > pod.yaml
 vi pod.yaml
 ```
 
@@ -255,7 +255,7 @@ There are lots of different types per cloud provider (see here)[https://kubernet
 <p>
 
 ```bash
-kubectl run busybox --image=busybox -- sleep 3600
+kubectl run busybox --image=busybox --restart=Never -- sleep 3600
 kubectl cp busybox:etc/passwd ./passwd # kubectl cp command
 # previous command might report an error, feel free to ignore it since copy command works
 cat passwd