Ubuntu報“無法解析域名cn.archive.ubuntu.com“問題解決辦法
發(fā)現(xiàn)問題
今天在Ubuntu系統(tǒng)上,使用sudo apt update命令,進行更新時,彈出"無法解析域名 cn.archive.ubuntu.com"問題,如圖(1)所示:
圖(1) 彈出"無法解析域名 cn.archive.ubuntu.com" 錯誤
出現(xiàn)這種現(xiàn)象的原因: cn.archive.ubuntu.com這個網(wǎng)站的鏡像資源不穩(wěn)定,dns經(jīng)常解析出錯,需要改成穩(wěn)定性好、速度快的Ubuntu鏡像,,比如,
- 163鏡像(http://mirrors.163.com/ubuntu/)、
- 清華源鏡像(https://mirrors.tuna.tsinghua.edu.cn/ubuntu/)
- 中科大鏡像(https://mirrors.ustc.edu.cn/ubuntu/)
- 阿里云鏡像(http://mirrors.aliyun.com/ubuntu/)
這里推薦163鏡像(http://mirrors.163.com/ubuntu/),解決步驟如下:
1 查看Ubuntu的發(fā)行版本
查看Ubuntu的發(fā)行版本,命令如下:
lsb_release -a
由圖(2) 可知,當前系統(tǒng)的發(fā)行版本是bionic,則Ubuntu的apt源鏡像要選擇bionic版本。
注意:鏡像源的版本,要與當前系統(tǒng)的發(fā)行版本(代號版本)保持一致。
圖(2) 查看Ubuntu的發(fā)行版本(即代號,昵稱)
2 備份sources.list
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
3 修改sources.list的權限
su root chmod 666 /etc/apt/sources.list
4 填寫Ubuntu鏡像
將原來的sources.list文件里的內容清空,然后,填入如下的163的apt源(鏡像):
deb http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse
5 刷新apt源
sudo apt-get update sudo apt-get upgrade
6 其他鏡像
6.1 阿里云的Ubuntu鏡像
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
6.2 清華的Ubuntu鏡像
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
6.3 中科大的Ubuntu鏡像
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
總結
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