mysql - 我可以查询给定主机给了多少 connect_errors 吗?
mysql - can I query how many connect_errors a given host gave?
MySQL 有一个策略,一旦主机达到可配置的登录尝试失败次数,就拒绝主机重新连接。
这可以使用 @@global.max_connect_errors
进行设置。
看这里:
https://dev.mysql.com/doc/refman/5.7/en/blocked-host.html
我找不到的,如果有人能给我指明方向,我将不胜感激 - 询问数据库,数据库从给定主机经历了多少次失败的连接尝试。
我正在几个节点之间进行高可用性设置,发现这一点对我来说很重要 - 特别是在我们的测试和集成环境中。
有人吗?
您可以尝试阅读 performance_schema.host_cache。这是内部主机缓存的动态视图,它跟踪每个主机的错误。
您可能知道,当您执行语句 FLUSH HOSTS
.
时,主机缓存跟踪的数据会被重置
您需要使用 MySQL 5.6 并启用 performance_schema(默认情况下应启用)。
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
MySQL 有一个策略,一旦主机达到可配置的登录尝试失败次数,就拒绝主机重新连接。
这可以使用 @@global.max_connect_errors
进行设置。
看这里:
https://dev.mysql.com/doc/refman/5.7/en/blocked-host.html
我找不到的,如果有人能给我指明方向,我将不胜感激 - 询问数据库,数据库从给定主机经历了多少次失败的连接尝试。
我正在几个节点之间进行高可用性设置,发现这一点对我来说很重要 - 特别是在我们的测试和集成环境中。
有人吗?
您可以尝试阅读 performance_schema.host_cache。这是内部主机缓存的动态视图,它跟踪每个主机的错误。
您可能知道,当您执行语句 FLUSH HOSTS
.
您需要使用 MySQL 5.6 并启用 performance_schema(默认情况下应启用)。
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