Update kubectl run from docs where necessary

kubectl run starting from 1.18 is creating only Pods and there is no option to
create any other resource. Users should be using kubectl create
commands instead. This update the documentation in all those places
where kubectl create should be used instead or changes description to
reflect the situation.

content/en/docs/concepts/configuration/overview.md

@@ -103,7 +103,7 @@ The caching semantics of the underlying image provider make even `imagePullPolic
 
 - Use label selectors for `get` and `delete` operations instead of specific object names. See the sections on [label selectors](/docs/concepts/overview/working-with-objects/labels/#label-selectors) and [using labels effectively](/docs/concepts/cluster-administration/manage-deployment/#using-labels-effectively).
 
-- Use `kubectl run` and `kubectl expose` to quickly create single-container Deployments and Services. See [Use a Service to Access an Application in a Cluster](/docs/tasks/access-application-cluster/service-access-application-cluster/) for an example.
+- Use `kubectl create deployment` and `kubectl expose` to quickly create single-container Deployments and Services. See [Use a Service to Access an Application in a Cluster](/docs/tasks/access-application-cluster/service-access-application-cluster/) for an example.
 
 
 

content/en/docs/concepts/overview/working-with-objects/object-management.md

@@ -40,12 +40,6 @@ objects, it provides no history of previous configurations.
 
 Run an instance of the nginx container by creating a Deployment object:
 
-```sh
-kubectl run nginx --image nginx
-```
-
-Do the same thing using a different syntax:
-
 ```sh
 kubectl create deployment nginx --image nginx
 ```

content/en/docs/concepts/services-networking/add-entries-to-pod-etc-hosts-with-host-aliases.md

@@ -23,7 +23,7 @@ Modification not using HostAliases is not suggested because the file is managed
 Start an Nginx Pod which is assigned a Pod IP:
 
 ```shell
-kubectl run nginx --image nginx --generator=run-pod/v1
+kubectl run nginx --image nginx
 ```
 
 ```
@@ -64,7 +64,7 @@ By default, the `hosts` file only includes IPv4 and IPv6 boilerplates like
 ## Adding additional entries with hostAliases
 
 In addition to the default boilerplate, you can add additional entries to the
-`hosts` file.  
+`hosts` file.
 For example: to resolve `foo.local`, `bar.local` to `127.0.0.1` and `foo.remote`,
 `bar.remote` to `10.1.2.3`, you can configure HostAliases for a Pod under
 `.spec.hostAliases`: