如何开启MySQL 5.7.12 的二进制日志

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　　1. 打开/etc下的my.cnf文件

　　2. 编辑它,添加内容:
log_bin=binary-log   #二进制日志的文件名server_id=1  #必须指定server_id,这是MySQL 5.7.3以后的要求binlog-do-db=yrld   #备份的数据库名,可以是多个binlog-do-db=websitebinlog-do-db=yrldgold

　　完整内容:
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# For advice on how to change settings please see# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html [mysqld]## Remove leading # and set to the amount of RAM for the most important data# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.# innodb_buffer_pool_size = 128M## Remove leading # to turn on a very important data integrity option: logging# changes to the binary log between backups.# log_bin=mysql-bin# binlog-do-db=yrld## Remove leading # to set options mainly useful for reporting servers.# The server defaults are faster for transactions and fast SELECTs.# Adjust># join_buffer_size = 128M# sort_buffer_size = 2M# read_rnd_buffer_size = 2M#下面二行是修改数据文件的位置datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sock#忽略大小写lower_case_table_names=1#最大连接数max_connections=1000sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'  # Disabling symbolic-links is recommended to prevent assorted security riskssymbolic-links=0 log-error=/var/log/mysqld.logpid-file=/var/run/mysqld/mysqld.pid [client] default-character-set=utf8mb4 [mysqld]#支持墨迹表情character-set-server=utf8mb4character-set-client-handshake = FALSEcollation-server = utf8mb4_unicode_ci#设置二进制日志log_bin=binary-logserver_id=1binlog-do-db=yrldbinlog-do-db=websitebinlog-do-db=yrldgold [mysql] default-character-set=utf8mb4　　--------------------------------------------------------------------------------------
　　关于server_id 的说明:
　　参见官网:
　　http://dev.mysql.com/doc/refman/5.7/en/replication-options-binary-log.html#sysvar_log_bin

　　3. 重启 MySQL
#启动命令service  mysqld  start#重启命令service  mysqld  restart#停止命令service  mysqld  stop#查询状态service  mysqld  status　　查看日志文件:

　　日志文件位置在/var/lib/mysql 这也是数据文件的位置,每启动一次mysql就会生成一个日志文件,如binary-log.000001,binary-log.000002 同时还会有binary-log.index文件.