DNS

30 avril 2026

Configure a DNS server on OpenBSD.

nsd

# rcctl enable nsd

Create configuration file:

# cat > /var/nsd/etc/nsd.conf << EOF
remote-control:
        control-enable: yes
        control-interface: /var/run/nsd.sock

server:
        hide-version: yes

zone:
        name: "triaxx.xyz"
        zonefile: "master/triaxx.io.zone"
EOF

Check that configuration is correct:

# nsd-checkconf /var/nsd/etc/nsd.conf
# echo $?
0

Create zone file:

# cat > /var/nsd/zones/master/triaxx.io.zone << EOF
$TTL 86400
$ORIGIN triaxx.io.
@              IN      SOA     ns0.triaxx.io. hostmaster.triaxx.io. (
                        2026043000     ; serial
                              1800     ; refresh (30 mins)
                               900     ; retry   (15 mins)
                            604800     ; expire   (7 days)
                              1200 )   ; minimum (20 mins)
@              IN      NS      ns0
@              IN      NS      ns1
@              IN      MX  10  mx
@              IN      A       175.52.128.39
mx             IN      A       175.52.128.39
ns0            IN      A       175.52.128.39
ns1            IN      A       105.7.42.123
EOF

Check that zone is correct:

# nsd-checkzone triaxx.io /var/nsd/zones/master/triaxx.io.zone 
zone triaxx.io is ok

# rcctl start nsd
nsd(ok)
# ps aux | grep nsd | grep -v grep
_nsd     40086  0.0  0.1 37976  4452 ??  Spc     8:45AM    0:00.01 nsd: xfrd (nsd)
_nsd     29469  0.0  0.8 33856 33428 ??  Spc     8:45AM    0:00.02 nsd: main (nsd)
_nsd     29244  0.0  0.1 50084  2116 ??  Spc     8:45AM    0:00.00 nsd: server 1 (nsd)

Test

dig @localhost triaxx.io SOA

Tags:

Service, Openbsd