๐ก Linux resolv.conf DNS & systemd-resolved โ Executive Summary
Technical architectural analysis, practical configuration manifests, and deployment instructions for Linux resolv.conf DNS & systemd-resolved.
ubuntu defaults
bash
nameserver 127.0.0.53 #๋ก์ปฌ DNS๋ฆฌ์กธ๋ฒ ์ฌ์ฉ
options edns0 trust-ad
search .coredns defaults
bash
search default.svc.cluster.local svc.cluster.local cluster.local
nameserver 10.152.183.10 #coredns serviceIP
options ndots:5Manage only with ResolveConf (Disable systemd-resolved)
bash
sudo systemctl stop systemd-resolved
sudo systemctl disable systemd-resolved
sudo systemctl mask systemd-resolved
sudo rm -f /etc/resolv.conf
sudo bash -c 'cat > /etc/resolv.conf <<EOF
nameserver 10.255.57.88
nameserver 8.8.8.8
nameserver 1.1.1.1
options edns0
EOF'
# ๋ค๋ฅธ ์๋น์ค์์ ์์ ๊ธ์ง
sudo chattr +i /etc/resolv.confRecover systemd-resolved again
bash
sudo chattr -i /etc/resolv.conf
sudo rm -f /etc/resolv.conf
sudo systemctl unmask systemd-resolved
sudo systemctl enable systemd-resolved
sudo systemctl start systemd-resolved
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