MySQL日志滚动

这篇文章主要为大家详细介绍了MySQL日志滚动，具有一定的参考价值，可以用来参考一下。

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1，查看log情况

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)

2，生成日志刷新用户

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)

3，日志滚动脚本，只保留一个星期的日志

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>&2
else
 echo "log file do not exist;"
 exit 1
fi
LOG=$1
DB_USER="log"
DB_PASS="log" 
# Others vars
DATE=`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

代码如下:

[root@linux ~]# ./log.sh /usr/local/mysql/mysql.log
refresh ok
[root@linux ~]# ls /usr/local/mysql/ |grep mysql
mysql.log
mysql.log_1

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