add en pages

content/en/docs/tasks/run-application/scale-stateful-set.md

@@ -8,15 +8,16 @@ reviewers:
 - kow3ns
 - smarterclayton
 title: Scale a StatefulSet
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 weight: 50
 ---
 
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 This task shows how to scale a StatefulSet. Scaling a StatefulSet refers to increasing or decreasing the number of replicas.
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 * StatefulSets are only available in Kubernetes version 1.5 or later.
   To check your version of Kubernetes, run `kubectl version`.
@@ -26,9 +27,9 @@ This task shows how to scale a StatefulSet. Scaling a StatefulSet refers to incr
 * You should perform scaling only when you are confident that your stateful application
   cluster is completely healthy.
 
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 ## Scaling StatefulSets
 
@@ -90,10 +91,11 @@ to reason about scaling operations at the application level in these cases, and
 perform scaling only when you are sure that your stateful application cluster is
 completely healthy.
 
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 * Learn more about [deleting a StatefulSet](/docs/tasks/run-application/delete-stateful-set/).
 
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