"del nsx" fails with an exception

Products

• VMware NSX
• VMware NSX-T Data Center

Issue/Introduction

• NSX-T Data Center
• On an ESXi host, the nsxcli command "del nsx" fails with error

"%Exception when deleting nsx from host: ' error code: 4 stdout: delete_nsx_instance_from_host.sh: INFO: NSX reset script called with argument fabric_node on nsx_instance_from_host.sh: INFO:Run transport_node reset on ESX node % Failed to remove all host switches or logical switches delete_nsx_instance_from_host.sh: ERROR: Failed to reset nsxa app of nsx-opsagent. Please check ospagent logs for more details. , stderr: Mon Nov 07 2022 UTC 07:03:02.307 ERROR: Failed to reset nsxa app of nsx-opsagent. Please check ospagent logs for more details. ESX1.example.com> del nsx"

• Hostd logs on the host report the following error relating to DCUI user permisions /var/log/hostd.log

2022-11-06T22:23:29.198Z info hostd[4233788] [Originator@6876 sub=Vimsvc.ha-eventmgr opID=b841b74c-becb] Event 1520313 : Cannot login user dcui@127.0.0.1: no permission

Environment

VMware NSX-T Data Center 3.x
VMware NSX 4.0.0.1

Cause

This failure occurs when admin permissions are removed manually from user 'dcui' by editing /etc/vmware/hostd/authorization.xml

Resolution

This is a known issue impacting VMware NSX.

Workaround
Restore the default permissions to user "dcui" by running the following command from the root shell of the ESXi host

#esxcli system permission set -i dcui -r Admin