IPA DNS DNSSEC causes Global Forwarding to not function

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Identity Management

Issue

  • IPA Global DNS Forwarder not Resolving
  • After upgrading from RHEL 6 IPA to RHEL 7 IPA, Global Forwarding is failing

Resolution

1. Edit /etc/named.conf and set the dnssec parameters as below:

dnssec-enable no;
dnssec-validation no;

2. Restart named:

# systemctl restart named-pkcs11

Note: As alternative solution DNSSEC can be enabled on external DNS. Refer link SECURING DNS TRAFFIC WITH DNSSEC

Root Cause

  • IPA is not able to forward DNS request to external DNS since DNSSEC check if failing.

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