Depois de configurar um novo repositório apt apropriadamente, assinando o repositório, servindo o repositório apropriadamente e adicionando a chave pública gpg ao keyring apt, eu encontro uma falha durante o comando apt update :
Err:3 http://#REPO_URL#/#NAME# #DISTRIBUTION# InRelease
The following signatures were invalid: #KEY_ID#
Hit:4 http://apt.postgresql.org/pub/repos/apt sid-pgdg InRelease
Reading package lists... Done
W: GPG error: http://#REPO_URL#/#NAME# #DISTRIBUTION# InRelease: The following signatures were invalid: #KEY_ID#
E: The repository 'http://#REPO_URL#/#NAME# #DISTRIBUTION# 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.
E a assinatura e as chaves gpg são boas. Consegui verificar a assinatura gpg no arquivo InRelease:
curl http://#REPO_URL#/InRelease | gpg --keyring /etc/apt/trusted.gpg --verify
gpg: Signature made Wed 11 Jan 2017 04:01:23 PM CET
gpg: using RSA key #KEY_ID#
gpg: Good signature from "#DESCRIPTION_GPG_KEY#" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: #GOOD_KEY_FINGERPRINT#
Também verifiquei o arquivo Release e Release.gpg com comando semelhante.
Eu tentei descobrir o que foi feito durante o apt update com um strace -o /tmp/strace -ff apt update , em seguida, grep :
grep 'apt.*key' ./strace*
./strace.29829:execve("/usr/bin/apt-key", ["/usr/bin/apt-key", "--quiet", "--readonly", "verify", "--status-fd", "3", "/tmp/apt.sig.ORUwxh", "/tmp/apt.data.kKXyrN"], [/* 28 vars */]) = 0
./strace.29829:open("/usr/bin/apt-key", O_RDONLY) = 4
./strace.29888:execve("/usr/bin/apt-key", ["/usr/bin/apt-key", "--quiet", "--readonly", "verify", "--status-fd", "3", "/tmp/apt.sig.utRWBD", "/tmp/apt.data.Fo1Lka"], [/* 28 vars */]) = 0
./strace.29888:open("/usr/bin/apt-key", O_RDONLY) = 4
./strace.29947:execve("/usr/bin/apt-key", ["/usr/bin/apt-key", "--quiet", "--readonly", "verify", "--status-fd", "3", "/tmp/apt.sig.ug6xiV", "/tmp/apt.data.Yv4zFs"], [/* 28 vars */]) = 0
./strace.29947:open("/usr/bin/apt-key", O_RDONLY) = 4
./strace.30006:execve("/usr/bin/apt-key", ["/usr/bin/apt-key", "--quiet", "--readonly", "verify", "--status-fd", "3", "/tmp/apt.sig.QSyrCg", "/tmp/apt.data.LK9DGO"], [/* 28 vars */]) = 0
./strace.30006:open("/usr/bin/apt-key", O_RDONLY) = 4
Como posso depurar e corrigir esse erro?