subscription-manager register command fails with error [Errno 110] Connection timed out on Red Hat Satellite 6.

Environment

• Red Hat Satellite 6.x

Issue

• While registering the client machine to satellite using subscription-manager register command, it fails with the below error:-

  [root@satellite]# subscription-manager register --username xxxxxxx --password xxxxx
  Network error, unable to connect to server. Please see /var/log/rhsm/rhsm.log for more information.  
  

• In /var/log/rhsm/rhsm.log file,

  2019-04-18 10:39:14,592 [ERROR] @managercli.py:101 - Error during registration: [Errno 110] Connection timed out
  2019-04-18 10:39:14,592 [ERROR] @managercli.py:102 - [Errno 110] Connection timed out
  

Resolution

• On Client machine,

  • Verify that the appropriate satellite server entries are in the /etc/hosts file.

  • Satellite server should be reachable from the client machine.

  • Correct DNS entries should be there in /etc/resolv.conf file and the satellite server should be resolving with the correct IP on the client machine.

  • Confirm no proxy environment variables are set on the client machine:-

    [root@client] # env | grep -i "proxy"
    

For more KB articles/solutions related to Red Hat Satellite 6.x Client Subscription Issues, please refer to the Red Hat Satellite Consolidated Troubleshooting Article for Red Hat Satellite 6.x Client Subscription Issues

Root Cause

• The client machine is not able to resolve the hostname of satellite server due to connectivity issue.
• Proxy environment variable being set or proxy related details updated wrongly in /etc/rhsm/rhsm.conf file on the client machine.

Diagnostic Steps

• Verifying reachability of satellite server from the client machine,

  [root@client] # ping satellite.example.com
  

• Check DNS settings on the client machine,

  [root@client] # cat /etc/resolv.conf
  [root@client] # dig satellite.example.com
  

Note:- Replace satellite.example.com with the satellite hostname

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