====== 更改 Ubuntu 的套件安裝來源 ======
因為 2021/02/22 開始發現 apt update 會出現以下無法連上 apt 主機的錯誤訊息 <cli>
:
root@iiidevops-71:~# apt update
Err:1 http://tw.archive.ubuntu.com/ubuntu focal InRelease
  Could not connect to tw.archive.ubuntu.com:80 (140.110.240.80). - connect (111: Connection refused) Cannot initiate the connection to tw.archive.ubuntu.com:80 (2001:e10:2000:240:e643:4bff:fee8:a63c). - connect (101: Network is unreachable)
Err:2 http://tw.archive.ubuntu.com/ubuntu focal-updates InRelease
  Cannot initiate the connection to tw.archive.ubuntu.com:80 (2001:e10:2000:240:e643:4bff:fee8:a63c). - connect (101: Network is unreachable)
:
</cli>
很明顯 tw.archive.ubuntu.com 應該有問題了, 找了一下替代的 apt 主機才發現 tw.archive.ubuntu.com 這主機似乎時常出問題 [[https://ubuntuqa.com/zh-tw/article/7864.html|2019]] [[https://echochio.pixnet.net/blog/post/44284771-tw.archive.ubuntu.com-%E9%80%A3%E4%B8%8D%E4%B8%8A|2016]] [[https://dexter7311.pixnet.net/blog/post/27261462|2011]]

===== 解決方式=====
  * 將 apt 的 sources.list 內 tw.archive.ubuntu.com 都改成 archive.ubuntu.com <cli>
sudo sed -i 's/tw.archive.ubuntu.com/archive.ubuntu.com/g' /etc/apt/sources.list
</cli>

===== 參考網址 =====
  * https://echochio.pixnet.net/blog/post/44284771-tw.archive.ubuntu.com-%E9%80%A3%E4%B8%8D%E4%B8%8A

{{tag>ubuntu apt sources.list}}