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site/content/en/api-reference/kustomization/replicas/_index.md

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+---
+title: "replicas"
+linkTitle: "replicas"
+type: docs
+description: >
+    Change the number of replicas for a resource.
+---
+
+Given this kubernetes Deployment fragment:
+
+```
+# deployment.yaml
+kind: Deployment
+metadata:
+  name: deployment-name
+spec:
+  replicas: 3
+```
+
+one can change the number of replicas to 5
+by adding the following to your kustomization:
+
+```
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+replicas:
+- name: deployment-name
+  count: 5
+```
+
+This field accepts a list, so many resources can
+be modified at the same time.
+
+As this declaration does not take in a `kind:` nor a `group:`
+it will match any `group` and `kind` that has a matching name and
+that is one of:
+- `Deployment`
+- `ReplicationController`
+- `ReplicaSet`
+- `StatefulSet`
+
+For more complex use cases, revert to using a patch.