[Warning] TIMESTAMP with implicit DEFAULT value is deprecated.

2017-07-28T12:46:35.138596Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).

    其实这个报错在安装的初始化的时候就已经有了(在第一篇安装的文章中能看到)，只不过没有影响安装和启动，所以并没有管,以为只是安装的时候检查类的报错，后来在重启mysql发现在error日志里面也会出现这个报错

解决方法：

在mysql官方网站上找到这么一段话

Those nonstandard behaviors remain the default for TIMESTAMP but as of MySQL 5.6.6 are deprecated and this warning appears at startup:

[Warning] TIMESTAMP with implicit DEFAULT value is deprecated.

Please use --explicit_defaults_for_timestamp server option (see

documentation for more details).

As indicated by the warning, to turn off the nonstandard behaviors, 

enable the new explicit_defaults_for_timestamp system variable at server startup. 

With this variable enabled, the server handles TIMESTAMP as follows instead:

这段话的意思是在5.6以后有这么一项检查，所以要开启标准的 explicit_defaults_for_timestamp功能，但是默认是关闭的。

在my.cnf中加入

[mysqld]

explicit_defaults_for_timestamp=true

如果还是报错，按mysql提示的执行下面的mysql启动命令：

./bin/mysqld_safe --user=mysql --explicit_defaults_for_timestamp=1 &