您可以代替此操作

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

#10.128.0.2 instance-1.c.concrete-craft-123421.internal instance-1  # Added by Google

10.128.0.2 instance-1 instance-1

也添加了您的行

10.128.0.2 instance-1 instance-1

在Google行之前.不需要cron;)它不会被删除！

before the google line. And no need to have cron ;) it won't be deleted !

这样做->

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

10.128.0.2 instance-1 instance-1

#10.128.0.2 instance-1.c.concrete-craft-123421.internal instance-1  # Added by Google