Invalid YAML for netplan: mapping values

Question

So, I am trying to set a static IP address for my Ubuntu Server 18.04.1 LTS. I took the ethernet config from this site.

network:
  version: 2
  renderer: networkd
  ethernets:
    enp3s0:
      dhcp4: no
      dhcp6: no
      addresses: [192.168.0.1/24]
      gateway4: 192.168.0.1
        nameservers:
          addresses: [192.168.0.1,8.8.8.8]

I carefully made sure there a space between each colon, didn't use tabs and made sure there's no leading spaces at the end of each line. Yet, when I run netplan --debug generate, I get:

Invalid YAML at /etc/netplan/01-network-card.yaml line 9 column 19: mapping values are not allowed in this context

Then, I compared the config with some other sample configs (1, 2, 3) and didn't notice much difference.

I also tried putting the addresses as:

addresses: [ "192.168.0.1/24" ]

As seen in this config with no luck. Whatever I try, it seems that the gateway4 line is always the problem. What am I doing wrong here?

It's the indentation of nameservers that's the problem, I think? — steeldriver, Jan 30 '19 at 03:06
Ohh, so I guess it thought nameservers was part of that same line. Yep, that was it. Thanks! — Kevin, Jan 30 '19 at 03:12
I'm interested why you are assigning enp3s0 the same IP address as the gateway is using. — Stephen Boston, Jun 21 '19 at 11:58

score 1 · Answer 1 · edited Jun 21 '19 at 09:21

1

Add space using the spacebar, not tab in above-mentioned line.

edited Jun 21 '19 at 09:21

Dr_Bunsen

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answered Jun 21 '19 at 07:22

Sujith Sajeev

11

This should be a comment, not an answer. – Dr_Bunsen Jun 21 '19 at 09:21
2

@Dr_Bunsen I see it as a valid (if short) answer. – guntbert Jun 23 '19 at 20:43

Invalid YAML for netplan: mapping values

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