我尝试将 Ubuntu 14.04 升级到 16.04，但遇到了一个问题。
我尝试遵循这篇文章：
https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-ubuntu-16-04-lts
运行此命令后：
sudo do-release-upgrade
当出现 1022 ssh 对话框时，我错误地输入了n，然后就断开了连接。
后来，我不得不转到 Dashboard 终端，并恢复 ssh 连接。
但是当我重试该命令时：
sudo do-release-upgrade
它给了我这个消息，我不得不关闭终端：
Please report this as a bug and include the files
/var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log in
your report. The upgrade has aborted.
Your original sources.list was saved in
/etc/apt/sources.list.distUpgrade.
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-vgm0wvbx/xenial", line 8, in
<module>
sys.exit(main())
File
"/tmp/ubuntu-release-upgrader-vgm0wvbx/DistUpgrade/DistUpgradeMain.py",
line 242, in main
if app.run():
File
"/tmp/ubuntu-release-upgrader-vgm0wvbx/DistUpgrade/DistUpgradeController.py",
line 1907, in run
return self.fullUpgrade()
File
"/tmp/ubuntu-release-upgrader-vgm0wvbx/DistUpgrade/DistUpgradeController.py",
line 1725, in fullUpgrade
if not self.prepare():
File
"/tmp/ubuntu-release-upgrader-vgm0wvbx/DistUpgrade/DistUpgradeController.py",
line 438, in prepare
self._sshMagic()
File
"/tmp/ubuntu-release-upgrader-vgm0wvbx/DistUpgrade/DistUpgradeController.py",
line 328, in _sshMagic
self._view.information(summary, descr)
File
"/tmp/ubuntu-release-upgrader-vgm0wvbx/DistUpgrade/DistUpgradeViewText.py",
line 176, in information
readline()
File
"/tmp/ubuntu-release-upgrader-vgm0wvbx/DistUpgrade/DistUpgradeViewText.py",
line 50, in readline
s = input()
KeyboardInterrupt
=== Command terminated with exit status 1 (Tue Feb 4 01:29:35 2020) ===
已经重试几次，但仍然失败，有什么线索吗？
答案1
我最终通过从快照恢复 VPS droplet 重新启动了升级过程，当出现 1022 ssh 对话框时，我输入了内容，y然后它继续下一个过程，直到完成。
我猜当我n之前输入时，我被踢出了 ssh 会话，并且它破坏了升级过程。
这里可以学到的一个教训是，始终对你的服务器进行备份/快照，当你需要它们时你永远不会:)
希望这能帮助任何处理同样问题的人。