Authentication in Pgpool-II
Pgpool-II is a proxy software for PostgreSQL cluster and it supports several authentication methods. How does Pgpool-II perform user authentication? In this post, I will introduce the authentication methods which Pgpool-II supports and how Pgpool-II authentication mechanism works. Authentication methods in Pgpool-II Pgpool-II supports several authentication methods: Trust Authentication MD5 Password Authentication scram-sha-256 Authentication (Pgpool-II 4.0 or later) Certificate Authentication PAM Authentication LDAP Authentication (from the next major release 4.2) Starting with Pgpool-II 4.0, Pgpool-II supports scram-sha-256 authentication. scram-sha-256 authentication method is strongly recommended because it is the most secure password-based authentication method. How does Pgpool-II authentication mechanism work? Since Pgpool-II is a PostgreSQL proxy that works between clients and PostgreSQL servers, the authentication comprises two steps: Authentication between client