默认情况下，Mariadb/Mysql配置里面没有启用
修改配置：vim /etc/my. cnf
增加：
log_bin = mysql-bin #是否开启了二进制日志
binlog_format = mixed #二进制日志记录的模式
expire_logs_days = 30 #二进制日志自动删除的天数。默认值为0,表示"没有自动删除"
#cat /etc/my.cnf | egrep 'log[_-]bin|binlog_format|expire_logs_days' 查看配置
当没配置binglog_format格式，可以用set session binglog_format=''和set global binglog_format='' 在线修改
show global variables like 'log_bin';==>查看是否已经成功启用
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin | ON |
+---------------+-------+
1 row in set (0.00 sec)
show binary logs;==>显示当前日志文件
+-------------------+-----------+
| Log_name | File_size |
+-------------------+-----------+
| master_bin.000001 | 821 |
+-------------------+-----------+
1 row in set (0.00 sec)
flush logs;==>刷新log，生成新的
show master status;
+-------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------+----------+--------------+------------------+
| master_bin.000002 | 608 | | |
+-------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
reset master;==>清空log，重新开始
Query OK, 0 rows affected (0.03 sec)
show master status;
+-------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------+----------+--------------+------------------+
| master_bin.000001 | 245 | | |
+-------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
show binlog events in 'master_bin.000001'\G ==>查询binlog内容
*************************** 1. row ***************************
Log_name: master_bin.000001
Pos: 4
Event_type: Format_desc
Server_id: 1
End_log_pos: 245
Info: Server ver: 5.5.44-MariaDB-log, Binlog ver: 4
*************************** 2. row ***************************
Log_name: master_bin.000001
Pos: 245
Event_type: Query
Server_id: 1
End_log_pos: 332
Info: use `school`; truncate table teacher
2 rows in set (0.00 sec)
或mysqlbinlog --start-date="2016-02-28 00:00:00" --stop-date="2016-02-29 00:00:00" master_bin.000001 按时间查询 也可按位置恢复 positon