老师,第一天用vagrant成功安装完虚拟机,可以是第二天使用vagrant ssh 登录就报错,报错信息如下:
A Vagrant environment or target machine is required to run this
command. Run vagrant init
to create a new Vagrant environment. Or,
get an ID of a target machine from vagrant global-status
to run
this command on. A final option is to change to a directory with a
Vagrantfile and to try again.