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MYSQL启用日志,和查看日志

WBOY
WBOYOriginal
2016-06-07 16:16:341167browse

mysql有以下几种日志: 错误日志: -log-err 查询日志: -log 慢查询日志: -log-slow-queries 更新日志: -log-update 二进制日志: -log-bin 是否启用了日志 mysqlshow variables like 'log_%'; 怎样知道当前的日志 mysql show master status; 顯示二進制日

  mysql有以下几种日志:

  错误日志: -log-err

  查询日志: -log

  慢查询日志: -log-slow-queries

  更新日志: -log-update

  二进制日志: -log-bin

  是否启用了日志

  mysql>show variables like 'log_%';

  怎样知道当前的日志

  mysql> show master status;

  顯示二進制日志數目

  mysql> show master logs;

  看二进制日志文件用mysqlbinlog

  shell>mysqlbinlog mail-bin.000001

  或者shell>mysqlbinlog mail-bin.000001 | tail

  在配置文件中指定log的輸出位置.

  Windows:Windows 的配置文件为 my.ini,,一般在 MySQL 的安装目录下或者 c:/Windows 下。

  Linux:Linux 的配置文件为 my.cnf ,一般在 /etc 下。

  在linux下:

  Sql代码

  # 在[mysqld] 中輸入

  #log

  log-error=/usr/local/mysql/log/error.log

  log=/usr/local/mysql/log/mysql.log

  long_query_time=2

  log-slow-queries= /usr/local/mysql/log/slowquery.log

  [sql]

  # 在[mysqld] 中輸入

  #log

  log-error=/usr/local/mysql/log/error.log

  log=/usr/local/mysql/log/mysql.log

  long_query_time=2

  log-slow-queries= /usr/local/mysql/log/slowquery.log

  windows下:

  Sql代码

  # 在[mysqld] 中輸入

  #log

  log-error="E:/PROGRA~1/EASYPH~1.0B1/mysql/logs/error.log"

  log="E:/PROGRA~1/EASYPH~1.0B1/mysql/logs/mysql.log"

  long_query_time=2

  log-slow-queries= "E:/PROGRA~1/EASYPH~1.0B1/mysql/logs/slowquery.log"

  [sql]

  # 在[mysqld] 中輸入

  #log

  log-error="E:/PROGRA~1/EASYPH~1.0B1/mysql/logs/error.log"

  log="E:/PROGRA~1/EASYPH~1.0B1/mysql/logs/mysql.log"

  long_query_time=2

  log-slow-queries= "E:/PROGRA~1/EASYPH~1.0B1/mysql/logs/slowquery.log"

  开启慢查询

  long_query_time =2 --是指执行超过多久的sql会被log下来,这里是2秒

  log-slow-queries= /usr/local/mysql/log/slowquery.log --将查询返回较慢的语句进行记录

  log-queries-not-using-indexes = nouseindex.log --就是字面意思,log下来没有使用索引的query

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