id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,uname,nginx_version 2180,Installation instructions fail on Ubuntu 16.04,ovenblast@…,thresh,"Installation instructions for Ubuntu were changed recently and currently cause `apt update` to fail on Ubuntu 16.04. {{{ # apt update Get:1 http://nginx.org/packages/ubuntu xenial InRelease [4354 B] Hit:2 http://archive.ubuntu.com/ubuntu xenial InRelease Hit:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease Hit:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease Hit:5 http://security.ubuntu.com/ubuntu xenial-security InRelease Err:1 http://nginx.org/packages/ubuntu xenial InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ABF5BD827BD9BF62 Reading package lists... Done W: GPG error: http://nginx.org/packages/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ABF5BD827BD9BF62 E: The repository 'http://nginx.org/packages/ubuntu xenial InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. }}} The previous version of instructions (with `apt-key add`) works fine on Ubuntu 16.04 and Ubuntu 20.04. Tested on Docker images `ubuntu:xenial` and `ubuntu:focal`.",defect,closed,minor,,documentation,1.19.x,fixed,,,Linux 525b07850e66 4.19.76-linuxkit #1 SMP Thu Oct 17 19:31:58 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux,n/a