Add k8s commands

src/ops/k8s/kubectl.md

@@ -18,6 +18,24 @@ Even if you see `kubectl apply` everywhere sometimes it's handy to use dedicated
 
 For example, `kubectl create` is used to create a ressource and will throw an error if a ressource already exists.
 
+#### Imperative commands quick reference
+
+Do not forget that `--dry-run=client` can be usefull
+
+##### Create a simple pod
+
+```sh
+kubectl run nginx --image=nginx
+```
+
+##### Create a deployement
+
+```sh
+kubectl create deployment --image=nginx nginx
+```
+
+**Gotcha**, deployement do not have a `--replicas` option, you need to use `kubctl scale` after deployement creation
+
 ### Generating a manifests, blazzing fast way
 
 ```sh