Group Replication System Variables precedence over  group_replication_recovery_get_public_key . This variable applies if you are not using SSL for distributed recovery over the  group_replication_recovery  channel ( group_replication_recovery_use_ssl=ON ), and the replication user account for Group Replication authenticates with the  caching_sha2_password  plugin (which is the default in MySQL 8.0). For more details, see Replication User With The Caching SHA-2 Authentication Plugin. • group_replication_recovery_public_key_path • group_replication_recovery_reconnect_interval 3823 Command-Line Format --group-replication-recovery-public- key-path=file_name System Variable group_replication_recovery_public_key_path Scope Global Dynamic Yes SET_VAR  Hint Applies No Type File name Default Value NULL The value of this system variable can be changed while Group Replication is running, but the change only takes effect after you stop and restart Group Replication on the group member. group_replication_recovery_public_key_path  specifies the path name to a file containing a replica-side copy of the public key required by the source for RSA key pair-based password exchange. The file must be in PEM format. If  group_replication_recovery_public_key_path  is set to a valid public key file, it takes precedence over  group_replication_recovery_get_public_key . This variable applies if you are not using SSL for distributed recovery over the group_replication_recovery  channel (so  group_replication_recovery_use_ssl is set to  OFF ), and the replication user account for Group Replication authenticates with the caching_sha2_password  plugin (which is the default in MySQL 8.0) or the  sha256_password plugin. (For  sha256_password , setting  group_replication_recovery_public_key_path applies only if MySQL was built using OpenSSL.) For more details, see Replication User With The Caching SHA-2 Authentication Plugin. Command-Line Format --group-replication-recovery- reconnect-interval=# System Variable Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Integer Default Value 60 Minimum Value 0 Maximum Value 31536000