aptget故障排查

1、aptget升级包失败？

root@chalon:~# apt update
Hit:1 http://mirrors.aliyun.com/ubuntu focal InRelease
Hit:2 http://mirrors.aliyun.com/ubuntu focal-security InRelease                                        
Hit:3 http://mirrors.aliyun.com/ubuntu focal-updates InRelease                                         
Get:4 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial InRelease [9,383 B]
Hit:5 http://mirrors.aliyun.com/ubuntu focal-proposed InRelease            
Hit:6 http://mirrors.aliyun.com/ubuntu focal-backports InRelease
Err:4 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FEEA9169307EA071 NO_PUBKEY 8B57C5C2836F4BEB
Reading package lists... Done
W: GPG error: https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FEEA9169307EA071 NO_PUBKEY 8B57C5C2836F4BEB
E: The repository 'https://mirrors.aliyun.com/kubernetes/apt kubernetes-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.

原因分析：重新全部生成过密钥导致该问题出现。

解决方法：再次针对aptget生成密钥。

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8B57C5C2836F4BEB

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys FEEA9169307EA071