On December 20th, 2018 we began to sign our packages with a new encryption key. Our percona-release package contains both the latest and older package signing keys. However, older versions of the percona-release rpm package do not contain our latest key. Users with older percona-release packages installed, that have not been updated, may see an error message when trying to install our newer packages.
Redhat Enterprise Linux (RHEL) and CentOS users may see an error similar to the following:
The GPG keys listed for the "Percona-Release YUM repository - x86_64" repository are already installed but they are not correct for this package. Check that the correct key URLs are configured for this repository.
Thankfully, the solution to this problem is simple. You will need to update your percona-release package before installing packages that are signed with the latest encryption key:
$ sudo yum update percona-release
Ubuntu and Debian systems will not encounter this error as package signing and key verification works differently on those systems.