Hostname not resolving?

webtipster

• January 10, 2017 11:59

Problem with the hostname not resolving at all. Not sure what has happened overnight but both servers do not respond to their hostname ie. WHM/cPanel is not accessible. Server is UP and all services are running. However the server hostname cannot be accessed via URL at all. Ran a DNS Stuff DNS check and everything resolves fine. Checked /etc/sysconfig/network and hostname is listed. Checked domain.db for the domain and everything looks fine ns1,ns2 etc are there. Not sure what else to check?

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  cPanelMichael

  • January 10, 2017 17:46

  Hello, Can you successfully ping or use the "host" command with the hostname from your workstation? Do you notice any output to /usr/local/apache/logs/error_log when attempting to open the hostname as a URL in a web browser? Thank you.

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  webtipster

  • January 10, 2017 18:17

  Hi Michael, Thank you on your prompt reply. Ping returns: Ping request could not find host xxx.domainname.net. Please check the name and try again. URL: This site can"t be reached. xxx.domainname.net"s server DNS address could not be found. If I ping just the domain name (not hostname) I get successful reply and can access the URL through browser. Any ideas? Thanks in advance.

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  webtipster

  • January 10, 2017 18:55

  Just a quick update forgot to check the host commands from the ssh: If I run host -t CNAME xxx.domainname.net I get Host xxx.domainname.net not found: 3(NXDomain) If I run host xxx, I get Host xxx not found: 3(NXDomain) Thank you.

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  webtipster

  • January 11, 2017 02:31

  Ok went back in and fixed it. Deleted the DNS zone for domainname.net, logged in using server IP to WHM and re-created the DNS zone for domainname.net, double checked that hostname was correct, hostname IP was assigned, re-assigned it again, checked the correct A entries are there, cleaned DNS zones, synced DNS records, and voila back in in business.

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  cPanelMichael

  • January 11, 2017 18:16

  I'm happy to see the issue is now resolved. Thank you for updating us with the outcome.

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  David Colter

  • February 25, 2017 15:58

  Deleted the DNS zone for domainname.net, logged in using server IP to WHM and re-created the DNS zone for domainname.net, double checked that hostname was correct, hostname IP was assigned, re-assigned it again, checked the correct A entries are there, cleaned DNS zones, synced DNS records, and voila back in in business.

  
  Thank you for posting the steps you took to solve this. They are, rewritten:

  ]
  • Deleted the DNS zone for domainname.net,
  • Logged in using server IP to WHM,
  • Re-created the DNS zone for domainname.net,
  • Double checked that hostname was correct, hostname IP was assigned,
  • Re-assigned it again,
  • Checked the correct A entries are there,
  • Cleaned DNS zones,
  • Synced DNS records, and
  • Voila back in in business

  Would you be able to expound on where or how steps 2 & 5-8 were accomplished?

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  cPanelMichael

  • February 27, 2017 15:19

  Hello @David Colter,

  Logged in using server IP to WHM,

  
  This simply implies accessing Web Host Manager directly over the IP address. EX:
  https://$server-IP:2087
  

  [LIST]

  Re-assigned it again, [LIST]

  Checked the correct A entries are there, [LIST]

  Cleaned DNS zones, [LIST]

  Synced DNS records, and

  
  DNS Zone modifications are possible via "WHM >> Edit DNS Zone". If you utilize a DNS cluster, you can force a synchronization of the changes via "WHM >> Synchronize DNS Records". Thank you.

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