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Old 07-11-2020, 09:55 AM   #1
marietto2008
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Registered: May 2020
Posts: 17

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how to restore a working network configuration with netplan on ubuntu 20.04


Hello. Newbie here.

recently I tried to install open nebula and for some reason,the eno1 network interface is disappeared from my ubuntu 20.04 network configuration and I would like to restore it,because actually I'm not able to connect to internet. Ubuntu 20.04 uses netplan. This is my 01-network-manager-all.yaml file :


Code:
network:

version: 2

renderer: networkd

ethernets:

eno1:

dhcp4: true

Actually,when I do ifconfig,I see these network interfaces :

Code:
docker0 : inet 172.17.0.1 ; netmask 255.255.0.0 ; broadcast 172.17.255.255

minione-nic : no inet ; no netmask ; no broadcast

veth03ad024 : no inet ; no netmask ; no broadcast

virbr0 : inet 192.168.122.1 ; netmask 255.255.255.0 ; broadcast 192.168.122.255

virbr0-nic : no inet ; no netmask ; no broadcast

I tried to re-create the old eno1 interface with these commands :


Code:
sudo netman apply

sudo systemctl restart network-manager

I don't see any identation error,but the situation is not changed. I have no eno1 interface and no connection to internet. what should I do ? what's missing ?

Last edited by marietto2008; 07-11-2020 at 11:32 AM.
 
Old 07-11-2020, 06:28 PM   #3
berndbausch
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Is there anything regarding NICs in the kernel startup messages? Use dmesg or journalctl -k.
 
Old 07-13-2020, 08:21 AM   #4
marietto2008
LQ Newbie
 
Registered: May 2020
Posts: 17

Original Poster
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u can read here :

https://askubuntu.com/questions/1258...n-ubuntu-20-04
 
  


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netplan, network confguration, ubuntu 20.04


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