Merge pull request #39532 from Zhuzhenghao/run-stateless

Add syntax tag to highlight the command

Author: k8s-ci-robot

content/en/docs/tasks/run-application/run-stateless-application-deployment.md

@@ -9,27 +9,16 @@ weight: 10
 
 This page shows how to run an application using a Kubernetes Deployment object.
 
-
-
-
 ## {{% heading "objectives" %}}
 
-
-* Create an nginx deployment.
-* Use kubectl to list information about the deployment.
-* Update the deployment.
-
-
-
+- Create an nginx deployment.
+- Use kubectl to list information about the deployment.
+- Update the deployment.
 
 ## {{% heading "prerequisites" %}}
 
-
 {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
 
-
-
-
 <!-- lessoncontent -->
 
 ## Creating and exploring an nginx deployment
@@ -40,60 +29,71 @@ a Deployment that runs the nginx:1.14.2 Docker image:
 
 {{< codenew file="application/deployment.yaml" >}}
 
-
 1. Create a Deployment based on the YAML file:
 
-        kubectl apply -f https://k8s.io/examples/application/deployment.yaml
+   ```shell
+   kubectl apply -f https://k8s.io/examples/application/deployment.yaml
+   ```
 
 1. Display information about the Deployment:
 
-        kubectl describe deployment nginx-deployment
-
-    The output is similar to this:
-
-        Name:     nginx-deployment
-        Namespace:    default
-        CreationTimestamp:  Tue, 30 Aug 2016 18:11:37 -0700
-        Labels:     app=nginx
-        Annotations:    deployment.kubernetes.io/revision=1
-        Selector:   app=nginx
-        Replicas:   2 desired | 2 updated | 2 total | 2 available | 0 unavailable
-        StrategyType:   RollingUpdate
-        MinReadySeconds:  0
-        RollingUpdateStrategy:  1 max unavailable, 1 max surge
-        Pod Template:
-          Labels:       app=nginx
-          Containers:
-           nginx:
-            Image:              nginx:1.14.2
-            Port:               80/TCP
-            Environment:        <none>
-            Mounts:             <none>
-          Volumes:              <none>
-        Conditions:
-          Type          Status  Reason
-          ----          ------  ------
-          Available     True    MinimumReplicasAvailable
-          Progressing   True    NewReplicaSetAvailable
-        OldReplicaSets:   <none>
-        NewReplicaSet:    nginx-deployment-1771418926 (2/2 replicas created)
-        No events.
+   ```shell
+   kubectl describe deployment nginx-deployment
+   ```
+
+   The output is similar to this:
+
+   ```
+   Name:     nginx-deployment
+   Namespace:    default
+   CreationTimestamp:  Tue, 30 Aug 2016 18:11:37 -0700
+   Labels:     app=nginx
+   Annotations:    deployment.kubernetes.io/revision=1
+   Selector:   app=nginx
+   Replicas:   2 desired | 2 updated | 2 total | 2 available | 0 unavailable
+   StrategyType:   RollingUpdate
+   MinReadySeconds:  0
+   RollingUpdateStrategy:  1 max unavailable, 1 max surge
+   Pod Template:
+     Labels:       app=nginx
+     Containers:
+       nginx:
+       Image:              nginx:1.14.2
+       Port:               80/TCP
+       Environment:        <none>
+       Mounts:             <none>
+     Volumes:              <none>
+   Conditions:
+     Type          Status  Reason
+     ----          ------  ------
+     Available     True    MinimumReplicasAvailable
+     Progressing   True    NewReplicaSetAvailable
+   OldReplicaSets:   <none>
+   NewReplicaSet:    nginx-deployment-1771418926 (2/2 replicas created)
+   No events.
+   ```
 
 1. List the Pods created by the deployment:
 
-        kubectl get pods -l app=nginx
+   ```shell
+   kubectl get pods -l app=nginx
+   ```
 
-    The output is similar to this:
+   The output is similar to this:
 
-        NAME                                READY     STATUS    RESTARTS   AGE
-        nginx-deployment-1771418926-7o5ns   1/1       Running   0          16h
-        nginx-deployment-1771418926-r18az   1/1       Running   0          16h
+   ```
+   NAME                                READY     STATUS    RESTARTS   AGE
+   nginx-deployment-1771418926-7o5ns   1/1       Running   0          16h
+   nginx-deployment-1771418926-r18az   1/1       Running   0          16h
+   ```
 
 1. Display information about a Pod:
 
-        kubectl describe pod <pod-name>
+   ```shell
+   kubectl describe pod <pod-name>
+   ```
 
-    where `<pod-name>` is the name of one of your Pods.
+   where `<pod-name>` is the name of one of your Pods.
 
 ## Updating the deployment
 
@@ -104,11 +104,15 @@ specifies that the deployment should be updated to use nginx 1.16.1.
 
 1. Apply the new YAML file:
 
-         kubectl apply -f https://k8s.io/examples/application/deployment-update.yaml
+   ```shell
+   kubectl apply -f https://k8s.io/examples/application/deployment-update.yaml
+   ```
 
 1. Watch the deployment create pods with new names and delete the old pods:
 
-         kubectl get pods -l app=nginx
+   ```shell
+   kubectl get pods -l app=nginx
+   ```
 
 ## Scaling the application by increasing the replica count
 
@@ -120,25 +124,33 @@ should have four Pods:
 
 1. Apply the new YAML file:
 
-        kubectl apply -f https://k8s.io/examples/application/deployment-scale.yaml
+   ```shell
+   kubectl apply -f https://k8s.io/examples/application/deployment-scale.yaml
+   ```
 
 1. Verify that the Deployment has four Pods:
 
-        kubectl get pods -l app=nginx
+   ```shell
+   kubectl get pods -l app=nginx
+   ```
 
-    The output is similar to this:
+   The output is similar to this:
 
-        NAME                               READY     STATUS    RESTARTS   AGE
-        nginx-deployment-148880595-4zdqq   1/1       Running   0          25s
-        nginx-deployment-148880595-6zgi1   1/1       Running   0          25s
-        nginx-deployment-148880595-fxcez   1/1       Running   0          2m
-        nginx-deployment-148880595-rwovn   1/1       Running   0          2m
+   ```
+   NAME                               READY     STATUS    RESTARTS   AGE
+   nginx-deployment-148880595-4zdqq   1/1       Running   0          25s
+   nginx-deployment-148880595-6zgi1   1/1       Running   0          25s
+   nginx-deployment-148880595-fxcez   1/1       Running   0          2m
+   nginx-deployment-148880595-rwovn   1/1       Running   0          2m
+   ```
 
 ## Deleting a deployment
 
 Delete the deployment by name:
 
-    kubectl delete deployment nginx-deployment
+```shell
+kubectl delete deployment nginx-deployment
+```
 
 ## ReplicationControllers -- the Old Way
 
@@ -147,14 +159,6 @@ which in turn uses a ReplicaSet. Before the Deployment and ReplicaSet were
 added to Kubernetes, replicated applications were configured using a
 [ReplicationController](/docs/concepts/workloads/controllers/replicationcontroller/).
 
-
-
-
 ## {{% heading "whatsnext" %}}
 
-
-* Learn more about [Deployment objects](/docs/concepts/workloads/controllers/deployment/).
-
-
-
-
+- Learn more about [Deployment objects](/docs/concepts/workloads/controllers/deployment/).