MySQL 9.1 Release Notes
This section discusses the implementation and use of Transport Layer Security (TLS) to secure network communications in MySQL NDB Cluster. Topics covered include keys and certificates, key and certificate life cycles, authentication of certificates, and how these are reflected in the configuration of the cluster, as well as NDB Cluster support for the Internet Public Key Infrastructure (PKI) used to authenticate and encrypt connections between NDB nodes, and between the NDB management server and its clients.
Note
TLS for NDB Cluster on Linux requires compiled-in support for OpenSSL 1.1 or later. For this reason, it is not available for Enterprise Linux 7, which is built with OpenSSL 1.0.