Authentication Plugins Type Integer Default Value 10 Minimum Value 0 Maximum Value 32767 For simple LDAP authentication, the initial size of the pool of connections to the LDAP server. Choose the value for this variable based on the average number of concurrent authentication requests to the LDAP server. The plugin uses  authentication_ldap_simple_init_pool_size  and authentication_ldap_simple_max_pool_size  together for connection-pool management: Changes to plugin system variable settings may have no effect on connections already in the pool. For example, modifying the LDAP server host, port, or TLS settings does not affect existing connections. However, if the original variable values were invalid and the connection pool could not be initialized, the plugin attempts to reinitialize the pool for the next LDAP request. In this case, the new system variable values are used for the reinitialization attempt. If  authentication_ldap_simple_max_pool_size=0  to disable pooling, each LDAP connection opened by the plugin uses the values the system variables have at that time. 1374 Command-Line Format --authentication-ldap-simple-log- status=# System Variable authentication_ldap_simple_log_status Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Integer Default Value 1 Minimum Value 1 Maximum Value ( ≥  8.0.18) 6 • authentication_ldap_simple_log_status •When the plugin unloads, it closes all pooled connections. •If the plugin receives a request when the pool size is already at its maximum and there are no free connections, authentication fails. •If the plugin receives an anthentication request when there are no free connections in the current connection pool, the plugin can create a new connection, up to the maximum connection pool size given by  authentication_ldap_simple_max_pool_size . •When the authentication plugin initializes, it creates authentication_ldap_simple_init_pool_size  connections, unless authentication_ldap_simple_max_pool_size=0  to disable pooling.