Update cheatsheets

kubectl-scale

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# kubectl scale
+
+> Set a new size for a deployment, replica set, replication controller, or stateful set.
+> More information: <https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#scale>.
+
+- Scale a replica set:
+
+`kubectl scale --replicas={{number_of_replicas}} rs/{{replica_name}}`
+
+- Scale a resource identified by a file:
+
+`kubectl scale --replicas={{number_of_replicas}} -f {{path/to/file.yml}}`
+
+- Scale a deployment based on current number of replicas:
+
+`kubectl scale --current-replicas={{current_replicas}} --replicas={{number_of_replicas}} deployment/{{deployment_name}}`