DNS server stopped working and named.service is not getting started

Solution Verified - Updated -

Issue

  • named.service keeps failing with below issue
   Jul 25 18:14:08 example.com bash[23359]: dns_master_load: masters/abc.example.com:51: www.example.com: multiple RRs of singleton type
   Jul 25 18:14:08 example.com bash[23359]: zone example.com/IN: loading from master file masters/abc.example.com failed: multiple RRs of singleton type
   Jul 25 18:14:08 example.com bash[23359]: zone example.com/IN: not loaded due to errors.
   Jul 25 18:14:08 example.com bash[23359]: _default/example.com/IN: multiple RRs of singleton type

Environment

  • Red Hat Enterprise Linux (RHEL) 7
  • Bind

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