mysqldiff該工具是官方mysql-utilities工具集的一個腳本，可以實現主從服務器表結構是否一致。數據校驗需要使用Percona的pt-table-checksum工具。

安裝：#?tar?zxvf?mysql-utilities-1.5.4.tar.gz

#?cd?mysql-utilities-1.5.4

#?python?setup.py?install

使用方法：mysqldiff?--server1=admin:123456@192.168.79.10?--server2=admin:123456@192.168.79.11

--difftype=differ?test:test

#?WARNING:?Using?a?password?on?the?command?line?interface?can?be?insecure.

#?server1?on?192.168.79.10:?...?connected.

#?server2?on?192.168.79.11:?...?connected.

#?Comparing?`test`?to?`test`???????????????????????????????????????[PASS]

#?Comparing?`test`.`t1`?to?`test`.`t1`?????????????????????????????[FAIL]

#?Object?definitions?differ.?(--changes-for=server1)

#

CREATE?TABLE?`t1`?(

`id`?int(11)?DEFAULT?NULL,

-???`name`?char(4)?DEFAULT?NULL

????????????????^

+???`name`?char(16)?DEFAULT?NULL

????????????????^^

)?ENGINE=InnoDB?DEFAULT?CHARSET=utf8

Compare?failed.?One?or?more?differences?found.

很直觀的找出不一樣的地方。

如果你想打印出修改表結構的語句，如下：#?mysqldiff?--server1=admin:123456@192.168.79.10?--server2=admin:123456@192.168.79.11

--difftype=sql?test:test

#?WARNING:?Using?a?password?on?the?command?line?interface?can?be?insecure.

#?server1?on?192.168.79.10:?...?connected.

#?server2?on?192.168.79.11:?...?connected.

#?Comparing?`test`?to?`test`???????????????????????????????????????[PASS]

#?Comparing?`test`.`t1`?to?`test`.`t1`?????????????????????????????[FAIL]

#?Transformation?for?--changes-for=server1:

#

ALTER?TABLE?`test`.`t1`

CHANGE?COLUMN?name?name?char(16)?NULL;

Compare?failed.?One?or?more?differences?found.

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