Get SSL certificates

Get information about the X.509 certificates that are used to encrypt communications in the cluster. The API returns a list that includes certificates from all TLS contexts including:

• Settings for transport and HTTP interfaces
• TLS settings that are used within authentication realms
• TLS settings for remote monitoring exporters

The list includes certificates that are used for configuring trust, such as those configured in the xpack.security.transport.ssl.truststore and xpack.security.transport.ssl.certificate_authorities settings. It also includes certificates that are used for configuring server identity, such as xpack.security.http.ssl.keystore and xpack.security.http.ssl.certificate settings.

The list does not include certificates that are sourced from the default SSL context of the Java Runtime Environment (JRE), even if those certificates are in use within Elasticsearch.

NOTE: When a PKCS#11 token is configured as the truststore of the JRE, the API returns all the certificates that are included in the PKCS#11 token irrespective of whether these are used in the Elasticsearch TLS configuration.

If Elasticsearch is configured to use a keystore or truststore, the API output includes all certificates in that store, even though some of the certificates might not be in active use within the cluster.

• Cluster privileges: monitor