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[role="exclude"]
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===== Security certificates and keys
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When you install {es}, the following certificates and keys are
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generated in the {es} configuration directory, which are used to connect a {kib}
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instance to your secured {es} cluster and to encrypt internode communication.
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The files are listed here for reference.
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`http_ca.crt`::
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The CA certificate that is used to sign the certificates for the HTTP layer of
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this {es} cluster.
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`http_keystore_local_node.p12`::
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Keystore that contains the key and certificate for the HTTP layer for this node.
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`transport_keystore_all_nodes.p12`::
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Keystore that contains the key and certificate for the transport layer for all
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the nodes in your cluster.
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