id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
2667	Ubuntu repository documentation: keyring may need permissions set	imackinnon@…		"The documentation describes installing the GPG public keyring and source file for the Ubuntu repository. 

https://nginx.org/en/linux_packages.html#Ubuntu

However, apt requires that the keyring file be readable by non-privileged users. This is unintuitive, but even when run as root, apt uses a non-privileged user to read the keyring file (see: https://askubuntu.com/a/1401911/4512 ).

Depending on the system's umask defaults, the keyring may be created as unreadable by a non-privileged user, and in this case apt will not tell the user there is a permissions issue, rather it gives the following ambiguous error:

{{{
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ABF5BD827BD9BF62
}}}

Thus, to avoid confusion, it may be helpful to add a line of code similar to the following in the documentation after the curl command:

{{{
sudo chmod 644 /usr/share/keyrings/nginx-archive-keyring.gpg
}}}

"	defect	accepted	minor		documentation	1.25.x		Ubuntu Permisisons		Linux n1 5.15.0-113-generic #123-Ubuntu SMP Mon Jun 10 08:16:17 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.27.0
built by gcc 11.4.0 (Ubuntu 11.4.0-1ubuntu1~22.04) 
built with OpenSSL 3.0.2 15 Mar 2022
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/ngi
nx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/
var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-htt
p_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --w
ith-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-http_v3_module --with-mail
 --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-g -O2 -ffile-prefix-map=/data/builder/debuild/nginx-1.27.0/debian/debui
ld-base/nginx-1.27.0=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-Wl,-Bsymbolic-functions -
flto=auto -ffat-lto-objects -flto=auto -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie'
"