23 lines
1.3 KiB
Markdown
23 lines
1.3 KiB
Markdown
# FAQ(Frequently Asked Questions)
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## What is the difference between PropagationPolicy and ClusterPropagationPolicy?
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The `PropagationPolicy` is a namespace-scoped resource type which means the objects with this type must reside in a namespace.
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And the `ClusterPropagationPolicy` is the cluster-scoped resource type which means the objects with this type don't have a namespace.
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Both of them are used to hold the propagation declaration, but they have different capacities:
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- PropagationPolicy: can only represent the propagation policy for the resources in the same namespace.
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- ClusterPropagationPolicy: can represent the propagation policy for all resources including namespace-scoped and cluster-scoped resources.
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## What is the difference between 'Push' and 'Pull' mode of a cluster?
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Please refer to [Overview of Push and Pull](./userguide/cluster-registration.md#overview-of-cluster-mode).
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## Why Karmada requires `kube-controller-manager`?
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`kube-controller-manager` is composed of a bunch of controllers, Karmada inherits some controllers from it
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to keep a consistent user experience and behavior.
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It's worth noting that not all controllers are needed by Karmada, for the recommended controllers please
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refer to [Recommended Controllers](./userguide/configure-controllers.md#recommended-controllers).
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