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openshift-docs/security/certificates/api-server.adoc
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:_mod-docs-content-type: ASSEMBLY
[id="api-server-certificates"]
= Adding API server certificates
include::_attributes/common-attributes.adoc[]
:context: api-server-certificates
toc::[]
The default API server certificate is issued by an internal {product-title}
cluster CA. Clients outside of the cluster will not be able to verify the
API server's certificate by default. This certificate can be replaced
by one that is issued by a CA that clients trust.
[NOTE]
====
In hosted control plane clusters, you can add as many custom certificates to your Kubernetes API Server as you need. However, do not add a certificate for the endpoint that worker nodes use to communicate with the control plane.
// For more information, see xref:../../hosted_control_planes/hcp-deploy/hcp-deploy-bm.adoc#hcp-custom-cert_hcp-deploy-bm[Configuring a custom API server certificate in a hosted cluster].
====
include::modules/customize-certificates-api-add-named.adoc[leveloffset=+1]