Question

Dns issue - Host domain.tld not found: 2(SERVFAIL)

[My level of knowledge with vps , linux and bind dns settings are at learning/begginer stage]

  1. Added domain/PTR plugservice.com to droplet with ip 139.59.78.183.

  2. Then somehow setup a vanity nameserver named ns1/ns2/ns3.plugservice.com pointing to ns1/ns2/ns3.digitalocean.com. Hope it is working fine.

  3. Afterwards added a user account called michaelco.in through CWP. But domain was not reaching the droplet. So issued #Host michaelco.in and received “Host michaelco.in not found: 2(SERVFAIL)” error.

Can anyone please help me to fix the issue?


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Accepted Answer

The issue is solved. It was due to missing A records for NS1/NS2/NS3 vanity nameservers in the droplet’s DNS manager.

d) #cat /var/named/michaelco.in.db

; Generated by CWP ; Zone file for michaelco.in $TTL 14400 michaelco.in. 86400 IN SOA ns1.plugservice.com. cwp.plugservice.com. ( 2013071600 ; serial, todays date+todays 86400 ; refresh, seconds 7200 ; retry, seconds 3600000 ; expire, seconds 86400 ) ; minimum, seconds michaelco.in. 86400 IN NS ns1.plugservice.com. michaelco.in. 86400 IN NS ns2.plugservice.com. michaelco.in. IN A 139.59.78.183 localhost.michaelco.in. IN A 127.0.0.1 michaelco.in. IN MX 0 michaelco.in. mail IN CNAME michaelco.in. www IN CNAME michaelco.in. ftp IN CNAME michaelco.in. ; Add additional settings below this line

c) dig @ns1.digitalocean.com michaelco.in

; > DiG 9.9.4-RedHat-9.9.4-51.el7_4.2 > @ns1.digitalocean.com michaelco.in ; (2 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 47277 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;michaelco.in. IN A ;; Query time: 43 msec ;; SERVER: 173.245.58.51#53(173.245.58.51) ;; WHEN: Thu Feb 01 21:18:28 IST 2018 ;; MSG SIZE rcvd: 41

b) # systemctl status named.service

● named.service - Berkeley Internet Name Domain (DNS) Loaded: loaded (/usr/lib/systemd/system/named.service; enabled; vendor preset: disabled) Active: active (running) since Thu 2018-02-01 20:51:31 IST; 22min ago Process: 1015 ExecStop=/bin/sh -c /usr/sbin/rndc stop > /dev/null 2>&1 || /bin/kill -TERM $MAINPID (code=exited, status=0/SUCCESS) Process: 1069 ExecStart=/usr/sbin/named -u named -c ${NAMEDCONF} $OPTIONS (code=exited, status=0/SUCCESS) Process: 1066 ExecStartPre=/bin/bash -c if [ ! “$DISABLE_ZONE_CHECKING” == “yes” ]; then /usr/sbin/named-checkconf -z “$NAMEDCONF”; else echo “Checking of zone files is disabled”; fi (code=exited, status=0/SUCCESS) Main PID: 1072 (named) CGroup: /system.slice/named.service └─1072 /usr/sbin/named -u named -c /etc/named.conf -4

Feb 01 20:52:07 plugservice.com named[1072]: no IPv6 interfaces found Feb 01 20:52:07 plugservice.com named[1072]: sizing zone task pool based on 8 zones Feb 01 20:52:07 plugservice.com named[1072]: /etc/named.conf:20: using specific query-source port suppresses port randomization and can be insecure. Feb 01 20:52:07 plugservice.com named[1072]: /etc/named.conf:20: using specific query-source port suppresses port randomization and can be insecure. Feb 01 20:52:07 plugservice.com named[1072]: reloading configuration succeeded Feb 01 20:52:07 plugservice.com named[1072]: reloading zones succeeded Feb 01 20:52:07 plugservice.com named[1072]: zone michaelco.in/IN: loaded serial 2013071600 Feb 01 20:52:07 plugservice.com named[1072]: all zones loaded Feb 01 20:52:07 plugservice.com named[1072]: running Feb 01 20:52:07 plugservice.com named[1072]: zone michaelco.in/IN: sending notifies (serial 2013071600)