warning: the following packages cannot be authenticated!

Question

I am trying a local installation of the juju charms.

1. Deply charm on machine1

2. copy deb files from /var/cache/apt/archive to /root/test on machine2

3. Modify the /etc/apt/sources.list to /root/test

4. apt-get update

5. When I try to deploy the charm on the machine2, I get the following error:

   warning: the following packages cannot be authenticated!
   

I did the search on error and tried few tricks like apt-key update but it did not work. How to resolve this?

Solution

Try to add --force-yes option when you do the apt-get install. It worked for me.

Comments

[David Foerster]

Possible duplicate of Why am I getting authentication errors for packages from an Ubuntu repository?

[David Foerster]

Which command exactly leads to the error message in step 5?

[Jugari Cross]

@David, I tried also the same search which appeared as google relevant suggestions. I tried few answers mentioned as part of search result. but none worked. When I deploy mysql, rabbitmq-server, some of the packages python-chardet-whl are being installed. If I install python-chardet-whl on command prompt with the option --force--yes, the package is installed. But if I try the installation without --force-yes option it fails

[Jugari Cross]

Should I change the question to soething relevant like this - Can debian packages from one machine can be installed on another?

[David Foerster]

Maybe… I'm not sure. You should definitely include a reference to the linked question in your question with a statement, that you tried all its answers unsuccessfully. You should also clarify, which command(s) lead(s) to the error message in your step 5.