Configuring Ranger KMS High Availability How to configure Ranger KMS high availability (HA) for Ranger KMS. Configure High Availability for Ranger KMS with DBUse the following steps to configure high availability for Ranger KMS with an associated keystore database. Configure High Availability for Ranger KMS with KTSUse the following steps to configure high availability for Ranger KMS with Key Trustee Server as the backing key store.