Editando Ubuntu (seção)

=== Erro de Chave gpg DEPRECATION ===
 
 W: http://link.dominio.com/download/repository/dists/sarge/Release.gpg: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details

Este erro acontece pois a chave foi salva em local inadequado.

==== Solução ====

Liste as chaves instaladas no seu sistema

 apt-key list 
O terminal vai retornar algo como essa saída:

<pre>
root@rjgs:/home/ubuntu# apt-key list
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
/etc/apt/trusted.gpg
--------------------
pub   dsa1024 2002-02-28 [SCA]
      1719 003A CE3E 5A41 E2DE  70DF D97A 3AE9 11F6 3C51
uid           [ unknown] Usuario usuario <usuario@dominio.com>
sub   elg1024 2002-02-28 [E]

/etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg
------------------------------------------------------
pub   rsa4096 2012-05-11 [SC]
      8439 38DF 228D 22F7 B374  2BC0 D94A A3F0 EFE2 1092
uid           [ unknown] Ubuntu CD Image Automatic Signing Key (2012) <cdimage@ubuntu.com>

/etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg
------------------------------------------------------
pub   rsa4096 2018-09-17 [SC]
      F6EC B376 2474 EDA9 D21B  7022 8719 20D1 991B C93C
uid           [ unknown] Ubuntu Archive Automatic Signing Key (2018) <ftpmaster@ubuntu.com>

/etc/apt/trusted.gpg.d/ubuntu-pro-esm-apps.gpg
----------------------------------------------
pub   rsa4096 2019-11-21 [SC]
      E8A4 43CE 3581 13D1 87BE  E0E6 AB01 A101 DB53 907B
uid           [ unknown] Ubuntu Apps Automatic Signing Key <esm@canonical.com>
sub   rsa4096 2019-11-21 [E]

/etc/apt/trusted.gpg.d/ubuntu-pro-esm-infra.gpg
-----------------------------------------------
pub   rsa4096 2019-04-17 [SC]
      56F7 650A 24C9 E9EC F87C  4D8D 4067 E403 13CB 4B13
uid           [ unknown] Ubuntu Extended Security Maintenance Automatic Signing Key v2 <esm@canonical.com>
sub   rsa4096 2019-04-17 [E]
</pre>
 
Identifique que uma das chaves deve estar salva em <code>/etc/apt/trusted.gpg</code>. 

<pre>
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
/etc/apt/trusted.gpg
--------------------
pub   dsa1024 2002-02-28 [SCA]
      1719 003A CE3E 5A41 E2DE  70DF D97A 3AE9 11F6 3C51
uid           [ unknown] Usuario usuario <usuario@dominio.com>
sub   elg1024 2002-02-28 [E]
</pre>

Esta é que está ocasionando o problema e deve ser exportada para a pasta correta <code>/etc/apt/trusted.gpg.d/</code> ou deletada. Para identificar uma chave, utilizamos as últimosa 8 algarismos do ID da chave (que nesse exemplo seria 11F63C51) utilizaremos "NUMERO_DA_CHAVE" para exemplificar os comandos á seguir.

Exportar a chave:

 sudo apt-key export NUMERO_DA_CHAVE | gpg --dearmour -o /etc/apt/trusted.gpg.d/nome_da chave.gpg

Deletar a chave:

 apt-key del NUMERO_DA_CHAVE

==== Instruções ====

Usage: apt-key [--keyring file] [command] [arguments]

Manage apt's list of trusted keys

  apt-key add <file>          - add the key contained in <file> ('-' for stdin)
  apt-key del <keyid>         - remove the key <keyid>
  apt-key export <keyid>      - output the key <keyid>
  apt-key exportall           - output all trusted keys
  apt-key update              - update keys using the keyring package
  apt-key net-update          - update keys using the network
  apt-key list                - list keys
  apt-key finger              - list fingerprints
  apt-key adv                 - pass advanced options to gpg (download key)