Updating gpg key ubuntu
W: GPG error: stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E W: The repository ' stable Release' is not signed.
Let me start by saying I am completely new to Linux (Ubuntu) and working with R.
This change to the GPG signing key affects both Puppet Enterprise users and open source Puppet users.
If you're using Puppet Enterprise, you'll be getting the new key in the next release, or if you manually update your version of puppet-agent, you'll get it then.
Done W: An error occurred during the signature verification.
If you have any questions, feel free to ask on #puppet on freenode, #puppet on the puppet community slack, or the puppet-users Google group.If new deployment or if you disable gpg check, no need update action. The GPG keys listed for the "Treasure Data" repository are already installed but they are not correct for this package.Check that the correct key URLs are configured for this repository.Then, feed the key to apt-key with sudo apt-key add I encountered the same issue and the only solution I found, perhaps due to a firewall, was to use the helpful Y PPA Manager.The two steps below outline has worked on Ubuntu 15.04.
Currently, I am on R version 2.13 and would like to update to a newer version in order to use some packages that depend on RFurther to @ben-bolker -- I met this problem myself and could not solve it, even when I followed the SECURE APT instructions.