技術(shù)文檔
一、臨時(shí)設(shè)置
直接修改 /etc/resolv.conf，例如直接添加nameserver 8.8.8.8。
注意：系統(tǒng)重啟或resolvconf重啟后會(huì)刷新該配置文件。
二、 永久配置
/etc/resolv.conf是一個(gè)鏈接，指向/run/resolvconf/resolv.conf，/run/resolvconf/resolv.conf的內(nèi)容是由/etc/resolvconf/resolv.conf.d/base加載過去的。
參考：
①Ubuntu通過修改配置文件進(jìn)行網(wǎng)絡(luò)配置及ubuntu解決resolv.conf被重寫問題和NetworkManager的關(guān)系；
②Debian DNS resolv.conf 重啟失效/復(fù)寫；
# 進(jìn)入/etc/resolvconf/resolv.conf.d/文件夾
cd /etc/resolvconf/resolv.conf.d/
# 添加nameserver，也可以修改head或tail
vi /etc/resolvconf/resolv.conf.d/base
nameserver 8.8.8.8
# 刷新或重啟
sudo resolvconf -u
sudo systemctl restart resolvconf
注：/etc/resolvconf/run/resolv.conf似乎也是指向/run/resolvconf/resolv.conf的鏈接，并且/etc/resolvconf/run/interface/systemd-resolved文件也會(huì)同時(shí)添加到/run/resolvconf/resolv.conf中，如果有大佬知道可以指點(diǎn)一下。
# 進(jìn)入/etc/resolvconf/run/interface/文件夾
cd /etc/resolvconf/run/interface/
# 添加nameserver
vi /etc/resolvconf/run/interface/systemd-resolved
nameserver 8.8.8.8
# 刷新或重啟
sudo resolvconf -u
sudo systemctl restart resolvconf