Merge pull request #37848 from windsonsea/conven

Make layout prettier in /configure-volume-storage.md

content/en/docs/tasks/configure-pod-container/configure-volume-storage.md

@@ -12,17 +12,12 @@ A Container's file system lives only as long as the Container does. So when a
 Container terminates and restarts, filesystem changes are lost. For more
 consistent storage that is independent of the Container, you can use a
 [Volume](/docs/concepts/storage/volumes/). This is especially important for stateful
-applications, such as key-value stores (such as Redis) and databases. 
+applications, such as key-value stores (such as Redis) and databases.
-
-
 
 ## {{% heading "prerequisites" %}}
 
-
 {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
 
-
-
 <!-- steps -->
 
 ## Configure a volume for a Pod
@@ -37,71 +32,71 @@ restarts. Here is the configuration file for the Pod:
 
 1. Create the Pod:
 
-    ```shell
+   ```shell
-    kubectl apply -f https://k8s.io/examples/pods/storage/redis.yaml
+   kubectl apply -f https://k8s.io/examples/pods/storage/redis.yaml
-    ```
+   ```
 
 1. Verify that the Pod's Container is running, and then watch for changes to
-the Pod:
+   the Pod:
 
-    ```shell
+   ```shell
-    kubectl get pod redis --watch
+   kubectl get pod redis --watch
-    ```
+   ```
-    
-    The output looks like this:
 
-    ```shell
+   The output looks like this:
-    NAME      READY     STATUS    RESTARTS   AGE
+
-    redis     1/1       Running   0          13s
+   ```shell
-    ```
+   NAME      READY     STATUS    RESTARTS   AGE
+   redis     1/1       Running   0          13s
+   ```
 
 1. In another terminal, get a shell to the running Container:
 
-    ```shell
+   ```shell
-    kubectl exec -it redis -- /bin/bash
+   kubectl exec -it redis -- /bin/bash
-    ```
+   ```
 
 1. In your shell, go to `/data/redis`, and then create a file:
 
-    ```shell
+   ```shell
-    root@redis:/data# cd /data/redis/
+   root@redis:/data# cd /data/redis/
-    root@redis:/data/redis# echo Hello > test-file
+   root@redis:/data/redis# echo Hello > test-file
-    ```
+   ```
 
 1. In your shell, list the running processes:
 
-    ```shell
+   ```shell
-    root@redis:/data/redis# apt-get update
+   root@redis:/data/redis# apt-get update
-    root@redis:/data/redis# apt-get install procps
+   root@redis:/data/redis# apt-get install procps
-    root@redis:/data/redis# ps aux
+   root@redis:/data/redis# ps aux
-    ```
+   ```
 
-    The output is similar to this:
+   The output is similar to this:
 
-    ```shell
+   ```shell
-    USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
+   USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
-    redis        1  0.1  0.1  33308  3828 ?        Ssl  00:46   0:00 redis-server *:6379
+   redis        1  0.1  0.1  33308  3828 ?        Ssl  00:46   0:00 redis-server *:6379
-    root        12  0.0  0.0  20228  3020 ?        Ss   00:47   0:00 /bin/bash
+   root        12  0.0  0.0  20228  3020 ?        Ss   00:47   0:00 /bin/bash
-    root        15  0.0  0.0  17500  2072 ?        R+   00:48   0:00 ps aux
+   root        15  0.0  0.0  17500  2072 ?        R+   00:48   0:00 ps aux
-    ```
+   ```
 
 1. In your shell, kill the Redis process:
 
-    ```shell
+   ```shell
-    root@redis:/data/redis# kill <pid>
+   root@redis:/data/redis# kill <pid>
-    ```
+   ```
 
-    where `<pid>` is the Redis process ID (PID).
+   where `<pid>` is the Redis process ID (PID).
 
 1. In your original terminal, watch for changes to the Redis Pod. Eventually,
-you will see something like this:
+   you will see something like this:
 
-    ```shell
+   ```shell
-    NAME      READY     STATUS     RESTARTS   AGE
+   NAME      READY     STATUS     RESTARTS   AGE
-    redis     1/1       Running    0          13s
+   redis     1/1       Running    0          13s
-    redis     0/1       Completed  0         6m
+   redis     0/1       Completed  0         6m
-    redis     1/1       Running    1         6m
+   redis     1/1       Running    1         6m
-    ```
+   ```
 
 At this point, the Container has terminated and restarted. This is because the
 Redis Pod has a
@@ -110,38 +105,32 @@ of `Always`.
 
 1. Get a shell into the restarted Container:
 
-    ```shell
+   ```shell
-    kubectl exec -it redis -- /bin/bash
+   kubectl exec -it redis -- /bin/bash
-    ```
+   ```
 
 1. In your shell, go to `/data/redis`, and verify that `test-file` is still there.
-    ```shell
+
-    root@redis:/data/redis# cd /data/redis/
+   ```shell
-    root@redis:/data/redis# ls
+   root@redis:/data/redis# cd /data/redis/
-    test-file
+   root@redis:/data/redis# ls
-    ```
+   test-file
+   ```
 
 1. Delete the Pod that you created for this exercise:
 
-    ```shell
+   ```shell
-    kubectl delete pod redis
+   kubectl delete pod redis
-    ```
+   ```
-
-
 
 ## {{% heading "whatsnext" %}}
 
+- See [Volume](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#volume-v1-core).
 
-* See [Volume](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#volume-v1-core).
+- See [Pod](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#pod-v1-core).
-
-* See [Pod](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#pod-v1-core).
-
-* In addition to the local disk storage provided by `emptyDir`, Kubernetes
-supports many different network-attached storage solutions, including PD on
-GCE and EBS on EC2, which are preferred for critical data and will handle
-details such as mounting and unmounting the devices on the nodes. See
-[Volumes](/docs/concepts/storage/volumes/) for more details.
-
-
-
 
+- In addition to the local disk storage provided by `emptyDir`, Kubernetes
+  supports many different network-attached storage solutions, including PD on
+  GCE and EBS on EC2, which are preferred for critical data and will handle
+  details such as mounting and unmounting the devices on the nodes. See
+  [Volumes](/docs/concepts/storage/volumes/) for more details.