I’m trying to install Graylog following these instructions but I’m getting this error.
rpm --import https://packages.graylog2.org/repo/debian/keyring.gpg
error: https://packages.graylog2.org/repo/debian/keyring.gpg: key 1 not an armored public key.
Same issue already reported
where you commented as following, confirming the error
Thanks to help me to proceed with installation
Denis