apt-get更新出現W: GPG error: http://repo.mysql.com trusty InRelease

1、問題

在使用 apt-get update 在 Ubuntu 環境更新包資源時，出現瞭如下報錯：

Ign http://repo.mysql.com trusty/mysql-tools Translation-en                    
Fetched 3,164 B in 1min 42s (30 B/s)                                           
Reading package lists... Done
W: GPG error: http://repo.mysql.com trusty InRelease: The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823

從報錯的信息看是由於簽名參數過時了，因此，這裏須要刪除後再更新。

2、解決

先查看執行命令：apt-key list

root@iZ9:/var/www/html/gryphon# apt-key list
/etc/apt/trusted.gpg
--------------------
pub   1024D/437D05B5 2004-09-12
uid                  Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
sub   2048g/79164387 2004-09-12

pub   1024D/FBB75451 2004-12-30
uid                  Ubuntu CD Image Automatic Signing Key <cdimage@ubuntu.com>

pub   4096R/C0B21F32 2012-05-11
uid                  Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@ubuntu.com>

pub   4096R/EFE21092 2012-05-11
uid                  Ubuntu CD Image Automatic Signing Key (2012) <cdimage@ubuntu.com>

pub   4096R/0EBFCD88 2017-02-22
uid                  Docker Release (CE deb) <docker@docker.com>
sub   4096R/F273FCD8 2017-02-22

pub   1024D/5072E1F5 2003-02-03 [expired: 2017-02-16]
uid                  MySQL Release Engineering <mysql-build@oss.oracle.com>

/etc/apt/trusted.gpg.d/chris-lea-node_js.gpg
--------------------------------------------
pub   1024R/C7917B12 2010-05-17
uid                  Launchpad chrislea

/etc/apt/trusted.gpg.d/ondrej-php.gpg
-------------------------------------
pub   1024R/E5267A6C 2009-01-26
uid                  Launchpad PPA for Ondřej Surý

刪除mysql 的repository GPG key，刪除命令以下：

sudo apt-key del 5072E1F5

刪除完了以後，檢查還有沒有那個mysql的key
沒有了，執行命令
：

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 8C718D3B5072E1F5

輸出：

root@iZ9:/var/www/html/gryphon# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 8C718D3B5072E1F5
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.RkicIHyEqq --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/chris-lea-node_js.gpg --keyring /etc/apt/trusted.gpg.d/ondrej-php.gpg --keyserver keyserver.ubuntu.com --recv 8C718D3B5072E1F5
gpg: requesting key 5072E1F5 from hkp server keyserver.ubuntu.com
gpg: key 5072E1F5: public key "MySQL Release Engineering <mysql-build@oss.oracle.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1

咱們再次查看：apt-key list

root@iZ94j7ehy5oZ:/var/www/html/gryphon# apt-key list
/etc/apt/trusted.gpg
--------------------
pub   1024D/437D05B5 2004-09-12
uid                  Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
sub   2048g/79164387 2004-09-12

pub   1024D/FBB75451 2004-12-30
uid                  Ubuntu CD Image Automatic Signing Key <cdimage@ubuntu.com>

pub   4096R/C0B21F32 2012-05-11
uid                  Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@ubuntu.com>

pub   4096R/EFE21092 2012-05-11
uid                  Ubuntu CD Image Automatic Signing Key (2012) <cdimage@ubuntu.com>

pub   4096R/0EBFCD88 2017-02-22
uid                  Docker Release (CE deb) <docker@docker.com>
sub   4096R/F273FCD8 2017-02-22

pub   1024D/5072E1F5 2003-02-03 [expires: 2022-02-16]
uid                  MySQL Release Engineering <mysql-build@oss.oracle.com>

/etc/apt/trusted.gpg.d/chris-lea-node_js.gpg
--------------------------------------------
pub   1024R/C7917B12 2010-05-17
uid                  Launchpad chrislea

/etc/apt/trusted.gpg.d/ondrej-php.gpg
-------------------------------------
pub   1024R/E5267A6C 2009-01-26
uid                  Launchpad PPA for Ondřej Surý

咱們能夠看到，mysql 的過時時間已經變爲 2022-02-06 了

pub   1024D/5072E1F5 2003-02-03 [expires: 2022-02-16]
uid                  MySQL Release Engineering <mysql-build@oss.oracle.com>

而後咱們再更新包：

apt-get update