Hi Guys,

I am unable to start the named.service using systemctl parameters on centOS 7.4. but If I am starting with command line it starts properly.

Can someone please help?

● named.service - Berkeley Internet Name Domain (DNS)
Loaded: loaded (/usr/lib/systemd/system/named.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Sun 2017-11-26 23:06:04 IST; 6s ago
Process: 1589 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=1/FAILURE)

Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12aww7mdklwvh1sgd2kk1lwsr3.net/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12b0jv17vnwgdb6bmxf13yuq1e.net/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12b5sba8fsvv29jmm68o6rwk.org/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12b8ko6forrxv1oml8251kfizkh.com/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12bc8ds10wet991cms4qtnwlfzl.org/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12bdyz8slslfbr1dhi81x20kcq.net/IN: loaded serial 2006060301
Nov 26 23:06:04 dnsdf.isnlab.in systemd[1]: named.service: control process exited, code=exited status=1
Nov 26 23:06:04 dnsdf.isnlab.in systemd[1]: Failed to start Berkeley Internet Name Domain (DNS).
Nov 26 23:06:04 dnsdf.isnlab.in systemd[1]: Unit named.service entered failed state.
Nov 26 23:06:04 dnsdf.isnlab.in systemd[1]: named.service failed.

#######################################

Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12aw0kr4m7qoc13wzvhwnf813v.org/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12aww7mdklwvh1sgd2kk1lwsr3.net/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12b0jv17vnwgdb6bmxf13yuq1e.net/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12b5sba8fsvv29jmm68o6rwk.org/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12b8ko6forrxv1oml8251kfizkh.com/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12bc8ds10wet991cms4qtnwlfzl.org/IN: loaded serial 2006060301
Nov 26 23:05:56 dnsdf.isnlab.in bash[1589]: zone 12bdyz8slslfbr1dhi81x20kcq.net/IN: loaded serial 2006060301
Nov 26 23:06:04 dnsdf.isnlab.in systemd[1]: named.service: control process exited, code=exited status=1
Nov 26 23:06:04 dnsdf.isnlab.in systemd[1]: Failed to start Berkeley Internet Name Domain (DNS).
-- Subject: Unit named.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman.../systemd-devel
--
-- Unit named.service has failed.
--
-- The result is failed.
Nov 26 23:06:04 dnsdf.isnlab.in systemd[1]: Unit named.service entered failed state.
Nov 26 23:06:04 dnsdf.isnlab.in systemd[1]: named.service failed.
Nov 26 23:06:04 dnsdf.isnlab.in polkitd[639]: Unregistered Authentication Agent for unix-process:1579:182365 (system bus name :1.40, object path /org/freedesktop/Policy

I hope I'm not insulting your intelligence but just to be sure, you have enabled the service first, have you?

i don't think this could have anything to do with the error shown.

"enable" means: start service next time systemd is restarted (usually after a reboot), and from then on always.
"start" means: start service now, but without the reboot thing.

op's description has been unclear about this: "unable to start the named.service using systemctl parameters. but If I am starting with command line it starts properly" - i have no idea what that means.
but the error posted is clearly an error, and not just the service not starting. meaning, it clearly tries to start.

Isn't this saying that if "$DISABLE_ZONE_CHECKING" == "yes" to fail to start?
Is $DISABLE_ZONE_CHECKING set to yes? [I don't know where that variable is set off the top of my head]

Well what I mean is; if I tries to start with /usr/sbin/named -u named -c /etc/named.com -n 4 ..it starts perfectly.
Not sure if this is happening due to permission issue or what but I am complete clueless here

Sounds familiar.
Mine mistake was that service to run was:
because I've installed it chroot variant and configured it to run as chroot.
However I was trying to start original named and this was wrong.

My solution :
edit /var/named/mydomain.com.hosts
remove below line
mydomain.com. IN NS mydomain.com.