mysql - mohu se zeptat, kolik connect_errors daný hostitel dal?

Můžete zkusit číst z performance_schema.host_cache . Toto je dynamický pohled do vnitřní mezipaměti hostitele, který sleduje chyby na hostiteli.

Jak pravděpodobně víte, data sledovaná mezipamětí hostitele se resetují, když provedete příkaz FLUSH HOSTS .

Musíte používat MySQL 5.6 a mít povolený performance_schema (což by mělo být ve výchozím nastavení).

mysql> select * from host_cache limit 1\G
*************************** 1. row ***************************
                                        IP: 192.168.48.95
                                      HOST: app.mcappface.example.com
                            HOST_VALIDATED: YES
                        SUM_CONNECT_ERRORS: 0
                 COUNT_HOST_BLOCKED_ERRORS: 0
           COUNT_NAMEINFO_TRANSIENT_ERRORS: 0
           COUNT_NAMEINFO_PERMANENT_ERRORS: 0
                       COUNT_FORMAT_ERRORS: 0
           COUNT_ADDRINFO_TRANSIENT_ERRORS: 0
           COUNT_ADDRINFO_PERMANENT_ERRORS: 0
                       COUNT_FCRDNS_ERRORS: 0
                     COUNT_HOST_ACL_ERRORS: 0
               COUNT_NO_AUTH_PLUGIN_ERRORS: 0
                  COUNT_AUTH_PLUGIN_ERRORS: 0
                    COUNT_HANDSHAKE_ERRORS: 0
                   COUNT_PROXY_USER_ERRORS: 0
               COUNT_PROXY_USER_ACL_ERRORS: 0
               COUNT_AUTHENTICATION_ERRORS: 0
                          COUNT_SSL_ERRORS: 0
         COUNT_MAX_USER_CONNECTIONS_ERRORS: 0
COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS: 0
             COUNT_DEFAULT_DATABASE_ERRORS: 0
                 COUNT_INIT_CONNECT_ERRORS: 0
                        COUNT_LOCAL_ERRORS: 0
                      COUNT_UNKNOWN_ERRORS: 0
                                FIRST_SEEN: 2018-03-01 19:54:39
                                 LAST_SEEN: 2018-03-19 16:13:06
                          FIRST_ERROR_SEEN: NULL
                           LAST_ERROR_SEEN: NULL