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ruby-on-railsrubyubunturvmkoding

RVM install on Ubuntu failing (error importing public key) [Kodign VM]

I am trying to install RVM in my Ubuntu machine with the following info:

  • DISTRIB_ID=Ubuntu
  • DISTRIB_RELEASE=14.04
  • DISTRIB_CODENAME=trusty
  • DISTRIB_DESCRIPTION="Ubuntu 14.04 LTS

I am doing this by following the official RVM guide, presented here:

However I fail in the very first command, I cannot import mpapi's public key (even when using sudo):

gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

I get the following error:

fl4m3ph03n1x: ~ $ sudo gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
gpg: WARNING: unsafe ownership on configuration file `/home/fl4m3ph03n1x/.gnupg/gpg.conf'
gpg: external program calls are disabled due to unsafe options file permissions
gpg: keyserver communications error: general error
gpg: keyserver receive failed: general error

At first I thought that the problem was a permission issue (by checking the warning), but after reading and trying out the solution in the discussion below nothing changed.

Here are the permissions on the file:

fl4m3ph03n1x: ~ $ ls -ld /home/fl4m3ph03n1x/.gnupg/gpg.conf                                                                                                                                                
-rwx------ 1 fl4m3ph03n1x fl4m3ph03n1x 9398 Jul 21 14:43 /home/fl4m3ph03n1x/.gnupg/gpg.conf
fl4m3ph03n1x: ~ $ ls -l /home/fl4m3ph03n1x/.gnupg/gpg.conf                                                                                                                                            
-rwx------ 1 fl4m3ph03n1x fl4m3ph03n1x 9398 Jul 21 14:43 /home/fl4m3ph03n1x/.gnupg/gpg.conf

What am I doing wrong ? How can I fix my problem?

Solution

  • It turns out that the problem was indeed fixed by file permissions. There are a few things I want to point out however.

    The solution for this problem relies in changing the permission of several files in cascade.

    For a more complete answer on permissions, I recommend this discussion, suggested by Maxim Pontyushenko:

    Now for the solution itself. You must changed the ownership and the read/write permissions of the following files, in the following order:

    1. /home/[username]/.gnupg/gpg.conf
    2. /home/[username]/.gnupg/pubring.gpg
    3. /home/[username]/.gnupg/trustdb.gpg

    You must change the permissions on these 3 files in this specific order.

    Additionally, do not run the gpg command using sudo. If you do it, you will be stuck on a error regarding safe file permissions to which i was not able to find any solution. Instead, run the gpg command using your username.

    I hope this helps the next person having problems. Kudos++ to all who commented!