CoreDNS

• DNS server
• Listens by default on port 53

Setup

From scratch

# Download coredns binary
wget "https://github.com/coredns/coredns/releases/download/v1.4.0/coredns_1.4.0_linux_amd64.tgz"
tar -xzvf "coredns_1.4.0_linux_amd64.tgz"

# Run
./coredns

IP to hostname mappings

• Put all entries on /etc/hosts
• Change configuration file Corefile to point to /etc/hosts

. {
    hosts /etc/hosts
}