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I'm a bit new to linux and ubuntu specially command line stuff. So I currently have a VPS which was running on a 14.04 ubuntu LTS, and as I needed a 16.04 version, I searched and found the way to upgrade it. I SSHed into the server and started upgrading, everything went well and it asked for a restart and I let it. After that I'm not able to to ssh into it. I had a KVM thingy with a VNC to connect and see what is going on. I don't know if an ubuntu server should boot on default (log in a user) or not, but it wasn't booting and there was a message :

/dev/vda1: clean, xxxx/xxxx files, xxxx/xxxx blocks

so I went to manually login using ctrl + alt + f2 and it is upgraded to 16.04 and the SSH service is running with no problem, but I noticed I couldn't do apt-get update or anything similar because I have no internet connection and after 24 hours searching I've come here asking for help.

I don't if it may help but these are the results of the commands I've ran

sudo lshw -C network gives: lshw -C network

and systemctl status networking.service gives : systemctl status networking.service

Arman Momeni
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  • Manually try sudo ifup -a --read-environment and see if you get any more error messages. – Jos Jun 18 '18 at 06:24
  • @Jos Thanks for the time, it gives me Cannot find device "eth0", Failed to bring up "eth0" – Arman Momeni Jun 18 '18 at 06:27
  • Ah. Your /etc/network/interfaces probably still refers to eth0, whereas as of 16.04, the interface has been given a new name. See this question: https://askubuntu.com/questions/953071/cannot-find-device-eth0-failed-to-bring-up-eth0 – Jos Jun 18 '18 at 06:30
  • In fact, replace eth0 by vethb436ed8 in /etc/network/interfaces and do systemctl restart networking. – Jos Jun 18 '18 at 06:34
  • @Jos Brilliant, Thanks. if You post it as answer I'll mark it as solution. thanks dude. – Arman Momeni Jun 18 '18 at 06:35
  • @Jos oh btw I replaced it with ens3 because after I entered ifconfig -a I saw ens3 and used that? It is working now should I use the other or if it is working I shouldn't touch it? :)) – Arman Momeni Jun 18 '18 at 06:36
  • Use whatever works. I found the vethb436ed8 a bit strange anyway (suggests a virtual interface). ens3 sounds more familiar. – Jos Jun 18 '18 at 06:41

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