修复损坏的/etc/network/interfaces [英] Fixing broken /etc/network/interfaces

问题描述

我在Google Compute Engine上有一个Ubuntu 16.04 VM.

I have an Ubuntu 16.04 VM on Google Compute Engine.

我在etc/network/interfaces中添加了一些命令，然后重新启动了vm以对其进行测试.它们显然是不正确的，而且我无法再通过ssh进入我的虚拟机.有没有一种方法可以在不使用ssh的情况下编辑/etc/network/interfaces文件来恢复虚拟机?

I was adding some commands to etc/network/interfaces, and restarted the vm to test them out. They were apparently incorrect, and I can no longer ssh into my vm. Is there a way I can edit the /etc/network/interfaces file without ssh to recover my vm?

推荐答案

此答案基于文章

This answer is based on an article Resolving getting locked out of a Compute Engine. Minor corrections were made and the solution was checked for the Debian 9 image.

与裸机一样，如果您可以物理访问它，就有机会获得对操作系统的访问权限.GCE VM也是如此:由于您有权访问VM配置，因此您可以进入内部.

As in the case of bare metal, if you have physical access to it, you have a chance to gain access to the operating system. The same goes for GCE VMs: since you have access to the VM configuration, you can get inside.

1..打开VM实例详细信息:

1. Open the VM instance details:

GCP Console => Compute Engine => VM instances => instance_name

2..停止VM实例

3..启用对串行控制台的访问并添加启动脚本，以创建临时用户:

3. Enable access to the Serial Console and add a startup script so that create a temporary user:

=> Edit =>  
  Enable connecting to serial ports = True 
  Custom metadata
    Key = startup-script
    Value = 
      useradd --groups "google-sudoers" user3
      echo "user3:password" | chpasswd
=> Save

4..启动VM实例.

5..启动后，连接到控制台:

5. Once it started, connect to the console:

=> Connect to serial console

6..按Enter键.出现登录提示.输入用户名( user3 )和密码( password ).您将进入bash外壳.登录的用户是"google-sudoers"组的成员，因此他可以充当root用户:

6. Press Enter. Login prompt appears. Enter username (user3) and password (password). You'll get to the bash shell. The logged-in user is a member of the "google-sudoers" group, so he can act as the root user:

$ groups 
  user3 google-sudoers 
$ id 
  uid=1004(user3) gid=1005(user3) groups=1005(user3),1000(google-sudoers) 
$ sudo su - 
root@instance-2:~#

这篇关于修复损坏的/etc/network/interfaces的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！