Report this

What is the reason for this report?

N: Missing Signed-By in the sources.list(5) entry for 'http://mirrors.digitalocean.com/ubuntu'

Posted on August 27, 2024

I recently upgrade from ubuntu 23.10 to 24.04 using the do-release-upgrade command. Everything went fine and the upgrade completed. However every time I do the apt update command I get this.

Hit:1 http://mirrors.digitalocean.com/ubuntu noble InRelease
Hit:2 http://mirrors.digitalocean.com/ubuntu noble-updates InRelease         
Hit:3 http://mirrors.digitalocean.com/ubuntu noble-backports InRelease       
Hit:4 http://security.ubuntu.com/ubuntu noble-security InRelease             
Reading package lists... Done                          
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
N: Missing Signed-By in the sources.list(5) entry for 'http://mirrors.digitalocean.com/ubuntu'
N: Missing Signed-By in the sources.list(5) entry for 'http://mirrors.digitalocean.com/ubuntu'
N: Missing Signed-By in the sources.list(5) entry for 'http://mirrors.digitalocean.com/ubuntu'

It doesn’t seem to affect the system but any help getting rid of this warning would be appreciated.

This is what “cat /etc/apt/sources.list.d/ubuntu.sources” outputs

Types: deb
URIs: http://security.ubuntu.com/ubuntu
Suites: noble-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg


This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
0

So I found the solution. There is the file “third-party.sources” in “/etc/apt/sources.list.d” add “Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg” to the end of it.

Missing the signed key for third-party.sources

Doing this via ssh should fix it.

sudo nano /etc/apt/sources.list.d/third-party.sources

Then at the end of the file add this line.

Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

Final file should look something like this.

Types: deb
URIs: http://mirrors.digitalocean.com/ubuntu/ Suites: noble noble-updates noble-backports
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

The developer cloud

Scale up as you grow — whether you're running one virtual machine or ten thousand.

Get started for free

Sign up and get $200 in credit for your first 60 days with DigitalOcean.*

*This promotional offer applies to new accounts only.