Select the right arch and download it to /usr/sbin/coredns

Add coredns user

# useradd coredns -s /sbin/nologin -c 'coredns running account'

Add systemd service

# cat /etc/systemd/system/coredns.service
[Unit]
Description=CoreDNS DNS server
Documentation=https://coredns.io
After=network.target
[Service]
Restart=always
PermissionsStartOnly=true
LimitNOFILE=1048576
LimitNPROC=4096
CapabilityBoundingSet=CAP_NET_BIND_SERVICE
AmbientCapabilities=CAP_NET_BIND_SERVICE
NoNewPrivileges=true
User=coredns
WorkingDirectory=/home/coredns
ExecStart=/bin/bash -c '/usr/sbin/coredns -conf=/etc/coredns/Corefile &>/var/log/coredns.log'
ExecReload=/bin/kill -SIGUSR1 $MAINPID
Restart=on-failure
[Install]
WantedBy=multi-user.target

Add CoreDNS configuration file: /etc/coredns/Corefile

# cat /etc/coredns/Corefile
.:53 {
    bind 0.0.0.0
    cache 3600
    rewrite stop type AAAA A
    loadbalance
    reload 30s
    log . "{type} {name} {class} {rcode} {duration}"
    forward . 192.168.1.101 192.168.100.102 192.168.100.102 {
      policy round_robin
      max_fails 1
      health_check 30s
    }
}

Enable and start coredns systemd service

# systemctl enable coredns
# systemctl start coredns