binlog解析及闪回工具 MySQL闪回工具简介 及 binlog2sql工具用法
安装：
unzip my2sql-master.zip
cd my2sql-master
go build .使用要求：
1、使用回滚/闪回功能时，binlog格式必须为row,且binlog_row_image=full， DML统计以及大事务分析不受影响
2、只能回滚DML， 不能回滚DDL
3、使用rollback功能时，要解析的binlog段，表结构要保持一致（例如：解析mysql-bin.000001文件，此binlog文件的的表有add column或drop column操作，则执行rollback可能会执行异常）
4、支持指定-tl时区来解释binlog中time/datetime字段的内容。开始时间-start-datetime与结束时间-stop-datetime也会使用此指定的时区， 但注意此开始与结束时间针对的是binlog event header中保存的unix timestamp。结果中的额外的datetime时间信息都是binlog event header中的unix timestamp
5、此工具是伪装成从库拉取binlog，需要连接数据库的用户有SELECT, REPLICATION SLAVE, REPLICATION CLIENT权限
6、MySQL8.0版本需要在配置文件中加入default_authentication_plugin =mysql_native_password，用户密码认证必须是mysql_native_password才能解析
重要参数：
-U
优先使用unique key作为where条件，默认false
-mode
repl: 伪装成从库解析binlog文件，file: 离线解析binlog文件, 默认repl
-local-binlog-file
当指定-mode=file 参数时，需要指定-local-binlog-file binlog文件相对路径或绝对路径,可以连续解析多个binlog文件，只需要指定起始文件名，程序会自动持续解析下个文件
-add-extraInfo
是否把database/table/datetime/binlogposition...信息以注释的方式加入生成的每条sql前，默认false
# datetime=2020-07-16_10:44:09 database=orchestrator table=cluster_domain_name binlog=mysql-bin.011519 startpos=15552 stoppos=15773
UPDATE `orchestrator`.`cluster_domain_name` SET `last_registered`='2020-07-16 10:44:09' WHERE `cluster_name`='192.168.1.1:3306'
-big-trx-row-limit n
transaction with affected rows greater or equal to this value is considerated as big transaction
找出满足n条sql的事务，默认500条
-databases 、 -tables
库及表条件过滤, 以逗号分隔
-sql
要解析的sql类型，可选参数insert、update、delete，默认全部解析
-doNotAddPrifixDb
Prefix table name witch database name in sql,ex: insert into db1.tb1 (x1, x1) values (y1, y1)
默认生成insert into db1.tb1 (x1, x1) values (y1, y1)类sql，也可以生成不带库名的sql
-file-per-table
为每个表生成一个sql文件
-full-columns
For update sql, include unchanged columns. for update and delete, use all columns to build where condition.
default false, this is, use changed columns to build set part, use primary/unique key to build where condition
生成的sql是否带全列信息，默认false
-ignorePrimaryKeyForInsert
生成的insert语句是否去掉主键，默认false
-output-dir
将生成的结果存放到制定目录
-output-toScreen
将生成的结果打印到屏幕，默认写到文件
-threads
线程数，默认8个
-work-type
2sql：生成原始sql，rollback：生成回滚sql，stats：只统计DML、事务信息
使用案例：
解析出标准SQL
根据时间点解析出标准sql:
#伪装成从库解析binlog
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode repl -work-type 2sql -start-file mysql-bin.011259 -start-datetime "2020-07-16 10:20:00" -stop-datetime "2020-07-16 11:00:00" -output-dir ./tmpdir
#直接读取binlog文件解析
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode file -local-binlog-file ./mysql-bin.011259 -work-type 2sql -start-file mysql-bin.011259 -start-datetime "2020-07-16 10:20:00" -stop-datetime "2020-07-16 11:00:00" -output-dir ./tmpdir根据pos点解析出标准SQL
#伪装成从库解析binlog
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode repl -work-type 2sql -start-file mysql-bin.011259 -start-pos 4 -stop-file mysql-bin.011259 -stop-pos 583918266 -output-dir ./tmpdir
#直接读取binlog文件解析
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode file -local-binlog-file ./mysql-bin.011259 -work-type 2sql -start-file mysql-bin.011259 -start-pos 4 -stop-file mysql-bin.011259 -stop-pos 583918266 -output-dir ./tmpdir
解析出回滚SQL
根据时间点解析出回滚SQL
#伪装成从库解析binlog
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode repl -work-type rollback -start-file mysql-bin.011259 -start-datetime "2020-07-16 10:20:00" -stop-datetime "2020-07-16 11:00:00" -output-dir ./tmpdir
#直接读取binlog文件解析
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode file -local-binlog-file ./mysql-bin.011259 -work-type rollback -start-file mysql-bin.011259 -start-datetime "2020-07-16 10:20:00" -stop-datetime "2020-07-16 11:00:00" -output-dir ./tmpdir
根据pos点解析出回滚SQL
#伪装成从库解析binlog
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode repl -work-type rollback -start-file mysql-bin.011259 -start-pos 4 -stop-file mysql-bin.011259 -stop-pos 583918266 -output-dir ./tmpdir
#直接读取binlog文件解析
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode file -local-binlog-file ./mysql-bin.011259 -work-type rollback -start-file mysql-bin.011259 -start-pos 4 -stop-file mysql-bin.011259 -stop-pos 583918266 -output-dir ./tmpdir统计DML以及大事务
统计时间范围各个表的DML操作数量，统计一个事务大于500条、时间大于300秒的事务
#伪装成从库解析binlog
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode repl -work-type stats -start-file mysql-bin.011259 -start-datetime "2020-07-16 10:20:00" -stop-datetime "2020-07-16 11:00:00" -big-trx-row-limit 500 -long-trx-seconds 300 -output-dir ./tmpdir
#直接读取binlog文件解析
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode file -local-binlog-file ./mysql-bin.011259 -work-type stats -start-file mysql-bin.011259 -start-datetime "2020-07-16 10:20:00" -stop-datetime "2020-07-16 11:00:00" -big-trx-row-limit 500 -long-trx-seconds 300 -output-dir ./tmpdir
统计一段pos点范围各个表的DML操作数量，统计一个事务大于500条、时间大于300秒的事务
#伪装成从库解析binlog
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode repl -work-type stats -start-file mysql-bin.011259 -start-pos 4 -stop-file mysql-bin.011259 -stop-pos 583918266 -big-trx-row-limit 500 -long-trx-seconds 300 -output-dir ./tmpdir
#直接读取binlog文件解析
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode file -local-binlog-file ./mysql-bin.011259 -work-type stats -start-file mysql-bin.011259 -start-pos 4 -stop-file mysql-bin.011259 -stop-pos 583918266 -big-trx-row-limit 500 -long-trx-seconds 300 -output-dir ./tmpdir
从某一个pos点解析出标准SQL，并且持续打印到屏幕
#伪装成从库解析binlog
./my2sql -user root -password xxxx -host 127.0.0.1 -port 3306 -mode repl -work-type 2sql -start-file mysql-bin.011259 -start-pos 4 -output-toScreen
