You can find below an occurrence of exiting and starting (in this case via cron). No errors in show slave. 2025-06-26 9:52:38 3608192 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:39 3608198 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:40 3603689 [Note] Slave SQL thread exiting, replication stopped in log 'binlog.001785' at position 192319795, master: 172.17.18.51:3306 2025-06-26 9:52:42 3608213 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:43 3608215 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:43 3608216 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:44 3608218 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:47 3608222 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:47 3608223 [Warning] Access denied for user 'cmonexporter'@'127.0.0.1' (using password: YES) 2025-06-26 9:52:47 3608224 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:48 3608226 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:48 3608228 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:49 3608229 [Warning] Aborted connection 3608229 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608230 [Warning] Aborted connection 3608230 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608231 [Warning] Aborted connection 3608231 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608232 [Warning] Aborted connection 3608232 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608233 [Warning] Aborted connection 3608233 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608234 [Warning] Aborted connection 3608234 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608235 [Warning] Aborted connection 3608235 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608236 [Warning] Aborted connection 3608236 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608237 [Warning] Aborted connection 3608237 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:49 3608238 [Warning] Aborted connection 3608238 to db: 'unconnected' user: 'unauthenticated' host: 'xxxxxxxxxxx' (This connection closed normally without authentication) 2025-06-26 9:52:52 3608242 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:53 3608244 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:53 3608245 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:53 3608246 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:57 3608251 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:57 3608252 [Warning] Access denied for user 'cmonexporter'@'127.0.0.1' (using password: YES) 2025-06-26 9:52:58 3608254 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:58 3608255 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:52:59 3608257 [Warning] Access denied for user 's9smysqlchk'@'::1' (using password: YES) 2025-06-26 9:53:01 3608261 [Note] Slave SQL thread initialized, starting replication in log 'binlog.001785' at position 192319795, relay log './relay-bin.000490' position: 192320091 2025-06-26 9:53:01 3608261 [Note] WSREP: ready state reached