[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).

    其實這個報錯在安裝的初始化的時候就已經有了(在第一篇安裝的文章中能看到)，只不過沒有影響安裝和啟動，所以并沒有管,以為只是安裝的時候檢查類的報錯，后來在重啟mysql發現在error日志里面也會出現這個報錯

解決方法：

在mysql官方網站上找到這么一段話

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:

這段話的意思是在5.6以后有這么一項檢查，所以要開啟標準的 explicit_defaults_for_timestamp功能，但是默認是關閉的。

在my.cnf中加入

[mysqld]

explicit_defaults_for_timestamp=true

如果還是報錯，按mysql提示的執行下面的mysql啟動命令：

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