一、修改源配置
这里使用的时候又出现了联不通的情况，换成国内镜像 在update
cp /etc/apt/source.list /etc/apt/source.list.bak
vim source.list
换源地址 修改完（网上有，注意：根据Ubuntu版本不一样，部分内同也会不一样）
deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
这里又遇到最后几个 update 还是连不上
根据网上资料
/etc/resolv.conf 文件 加上
nameserver 8.8.8.8
nameserver 114.114.114.114
然后 apt update 就可以了
1、/etc/resolv.conf 重启被重置
嗯…… Do not edit 好家伙
1. 修改 /etc/systemd/resolved.conf 文件
[Resolve]
DNS=8.8.8.8 114.114.114.114
2.重启域名解析服务
systemctl restart systemd-resolved
systemctl enable systemd-resolved
3.备份当前的/etc/resolve.conf，并重新设置/run/systemd/resolve/resolv.conf 到/etc/resolve.conf的软链接
mv /etc/resolv.conf /etc/resolv.conf.bak
ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
4.查看验证
cat /etc/resolv.conf