Ipa-server-install fails with the error: 'The DNS operation timed out after'

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 7
  • Identity Management (IdM)

Issue

Ipa server installation fails with following message:
ipaserver.install.bindinstance: ERROR DNS server {DNS_IP}: query '. SOA': The DNS operation timed out after {XX} seconds
ipapython.admintool: ERROR DNS server {DNS_IP}: query '. SOA': The DNS operation timed out after {XX} seconds
ipapython.admintool: ERROR The ipa-server-install command failed. See /var/log/ipaserver-install.log for more information

With:
* DNS_IP: the configured forwarders ip address
* XX: the timeout in seconds

Resolution

  1. Ensure forwarders are reachable
  2. If forwarders are mandatory in your infrastructure, fix them and retry
  3. If they are not mandatory, retry by not specifying them

Root Cause

When Specifying forwarders, the installer tries to use them. When they are not reachable during the installation process, it cannot continue and fails

Diagnostic Steps

Logs analysis

Check /var/log/ipaserver-install.log, they should display followin message:
ipaserver.install.bindinstance: ERROR DNS server {DNS_IP}: query '. SOA': The DNS operation timed out after {XX} seconds
ipapython.admintool: ERROR DNS server {DNS_IP}: query '. SOA': The DNS operation timed out after {XX} seconds

Troubleshooting

  1. Install bind utils : yum install bind-utils
    2.run the following command : ` dig @AAA.BBB.CCC.DDD redhat.com```

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-16.P2.el7_8.2 <<>> @AAA.BBB.CCC.DDD redhat.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached

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