Management channel to Transport Node is down for 15 minutes

Products

• VMware NSX

Issue/Introduction

Although this alarm can be raised due to common reasons, as outlined in the KB article below:

Communication from Transport node to the leader Manager node is down for longer duration Alarm in NSX Manager

This KB describes a scenario not covered in the article above.

Along with the alarm, the host nsx-syslog.log reported the following:

 [nsx@6876 comp="nsx-esx" subcomp="nsx-proxy" s2comp="mpa-proxy-lib" tid="######" level="INFO"] MPA: Waiting for node uuid in /etc/vmware/nsx/host-cfg.xml. Empty uuid in config.

Environment

VMware NSX

Cause

Host TN has empty configuration files, hence it will not connect to NSX managers

Resolution

Manually register the host to the NSX manager by the following CLI command:

#join management-plane <hostname-or-ip-address[:port]> thumbprint <thumbprint> token <token> [node-uuid <uuid>] 

 

 

Additional Information

CLI documentation