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Thread: ubuntu server 20.04.1*-network:0 & *-network:1 DISABLED

  1. #1
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    ubuntu server 20.04.1*-network:0 & *-network:1 DISABLED

    hi im running ubuntu server 20.04.1 and i have a networking problem

    i cant get connection to the internet with ethernet cable

    so i cant install if config

    i can see the network cards is disabled

    usually i just enable with ifconfig up command

    but i dont have ifconfig installed

    and cant install it either becouse of no net

    help!

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    Re: ubuntu server 20.04.1*-network:0 & *-network:1 DISABLED

    Thread moved to Server Platforms for a better fit

  4. #4
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    Re: ubuntu server 20.04.1*-network:0 & *-network:1 DISABLED

    hi im kinda new to ubuntu server

    and i am using it without GUI

    and i didnt get much out of the links you send me

  5. #5
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    Post my server running 20.40 dosnt have internet

    my server running 20.40 dosnt have internet
    and the netplan fails to deploy

  6. #6
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    Re: ubuntu server 20.04.1*-network:0 & *-network:1 DISABLED

    Threads merged. Please do not post duplicates.

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  7. #7
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    Re: ubuntu server 20.04.1*-network:0 & *-network:1 DISABLED

    Usually you would set up the networking details during OS installation. Did you do that? If you did, that means the OS can detect the network card, which is the first step.

    You can also check which network cards the OS can see with:
    Code:
    sudo lshw -C network
    Please post the content of the netplan yaml file here, inside CODE tags. That will make it easier for reading.

    Another important thing, did you have internet during installation? I think it downloads a lot of packages during the installation so if you didn't have internet then you might be missing a lot. That might explain why you can't use ifconfig. I never needed to install it manually, it was always there as part of the OS. But I always install the OS with internet connection active.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 18.04 LTS 64bit

  8. #8
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    Re: ubuntu server 20.04.1*-network:0 & *-network:1 DISABLED

    I don't think ifconfig is part of the base install of 20.04.

    To see your IP address settings, you can type this command:
    Code:
    ip address
    or this for short:
    Code:
    ip a
    Networking in 20.04 uses Netplan and its configuration file can be located in /etc/netplan/*.yaml

    When you make a change to your network config file, make sure you run this command and check to see if it says "configuration is valid"
    Code:
    sudo netplan --debug generate
    Once you have a valid configuration, only then do you apply it:
    Code:
    sudo netplan --debug apply
    If you have never setup an Ubuntu server before, you can find some useful information in setup guide which I tend to refer to it for various things on a regular bases (such as adding a hard drive, expanding volumes, etc.)

    LHammonds
    LHammonds

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