diff --git a/_data/glossary/replication-controller.yaml b/_data/glossary/replication-controller.yaml
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+id: replication-controller
+name: Replication Controller
+tags:
+- fundamental
+short-description: >
+  Kubernetes service that ensures a specific number of instances of a pod are always running.
+long-description: >
+  Will automatically add or remove running instances of a pod, based on a set value for that pod. Allows the pod to return to the defined number of instances if pods are deleted or if too many are started by mistake.
+