1，查看log情况 复制代码 代码如下: mysql show global variables like '%log%'; +---------------------------------+---------------------------------+ | Variable_name | Value | +---------------------------------+--------------------
1，查看log情况复制代码 代码如下:mysql> show global variables like '%log%';+---------------------------------+---------------------------------+| Variable_name | Value |+---------------------------------+---------------------------------+| back_log | 50 || binlog_cache_size | 32768 || binlog_format | MIXED || expire_logs_days | 0 || general_log | ON || general_log_file | /usr/local/mysql/mysql.log || log | ON || log_bin | ON || log_bin_trust_function_creators | OFF || log_bin_trust_routine_creators | OFF || log_error | /var/log/mysqld.log || log_output | FILE || log_queries_not_using_indexes | OFF || log_slave_updates | OFF || log_slow_queries | ON || log_warnings | 1 || max_binlog_cache_size | 4294963200 || max_binlog_size | 1073741824 || max_relay_log_size | 0 || relay_log | || relay_log_index | || relay_log_info_file | relay-log.info || relay_log_purge | ON || relay_log_space_limit | 0 || slow_query_log | ON || slow_query_log_file | /usr/local/mysql/mysql-slow.log || sql_log_bin | ON || sql_log_off | OFF || sql_log_update | ON || sync_binlog | 0 |+---------------------------------+---------------------------------+30 rows in set (0.00 sec)上面主要有三个日志文件，mysql.log,mysqd.log,mysql-slow.log，除了mysqld.log不能通过mysqladmin flush-logs来刷新日志外，其他的都可以，mysqld.log是服务器启动程序mysqld产生的。
2，生成日志刷新用户复制代码 代码如下:mysql> GRANT RELOAD ON *.* TO 'log'@'localhost' IDENTIFIED BY 'log';Query OK, 0 rows affected (0.07 sec)mysql> flush privileges;Query OK, 0 rows affected (0.03 sec)用root账户登录进去，添加一个log的用户。分开清楚一点。
3，日志滚动脚本，只保留一个星期的日志复制代码 代码如下:[root@linux ~]# vim log.sh //添加以下内容#!/bin/sh# log refresh if [ -f $1 ];then echo "refresh ok" 1>&2else echo "log file do not exist;" exit 1fiLOG=$1DB_USER="log"DB_PASS="log" # Others varsDATE=`date +%w` BIN_DIR="/usr/local/mysql/bin"mv ${LOG} ${LOG}_${DATE}${BIN_DIR}/mysqladmin -ulog -plog flush-logs添加可执行权限chmod +x log.sh
脚本很简单，不过有一点要解释一下，就是mv ${LOG} ${LOG}_${DATE}，第一周会产生7个文件，第二周会覆盖上周的，星期一覆盖星期一，星期二覆盖星期二，以此内推。
4，日志滚动复制代码 代码如下:[root@linux ~]# ./log.sh /usr/local/mysql/mysql.logrefresh ok[root@linux ~]# ls /usr/local/mysql/ |grep mysqlmysql.logmysql.log_1
