如何开启MySQL 5.7.12 的二进制日志

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=website

binlog-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 sizes as needed, experiment to find the optimal values.

# 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/mysql

socket=/var/lib/mysql/mysql.sock

#忽略大小写

lower_case_table_names=1

#最大连接数

max_connections=1000

sql_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 risks

symbolic-links=0

 

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

 

[client]

 

default-character-set=utf8mb4

 

[mysqld]

#支持墨迹表情

character-set-server=utf8mb4

character-set-client-handshake = FALSE

collation-server = utf8mb4_unicode_ci

#设置二进制日志

log_bin=binary-log

server_id=1

binlog-do-db=yrld

binlog-do-db=website

binlog-do-db=yrldgold

 

[mysql]

 

default-character-set=utf8mb4

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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.