New NSX segments do not show up in the vCenter network inventory

Products

• VMware NSX

Issue/Introduction

• The network segment exists in NSX but not in the vCenter networking inventory.
• Newly formed NSX segments are also not displaying in vCenter inventory.

 

Environment

VMware NSX

Cause

• Due to the NSX manager's inability to contact DNS, the FQDN of the VCenter server cannot be resolved.
• Verify compute manager status 

• In case you are getting above error, connect to the NSX manager using root
• Ping the FQDN and IP address of vCenter server
• If VCenter fqdn does not resolve, try pinging the active DNS server configured on NSX. 
• name servers can be obtain using cat /etc/resolv.conf command 

root@nsx-mngr-01:~# cat /etc/resolv.conf
nameserver <ip-address>

• Ping the current nameserver.
• If nameserver cannot be reached, update the nameserver settings in NSX management. 

 

Resolution

Connect the NSX manager with admin credentials. 

nsx-mngr-01> get name-servers
Tue Sep 03 2024 UTC 21:49:28.534
<ip-address>

nsx-mngr-01> set name-servers <ip-address>

nsx-mngr-01> get name-servers
Tue Sep 03 2024 UTC 22:08:34.578
<ip-address1>
<ip-address2>

nsx-mngr-01> del name-server <ip-address>