During an NSX global manager upgrade an error similar to below will be observed on the NSX cli and the GUI will be unavailable. From the NSX manager cli as admin run the following: "get upgrade progress-status".
The log file at /var/log/gmanager/gmanager_restart.log shows GMLE leadership safety violation handler triggered
2026-05-20T23:03:04.889Z INFO application-restartor restartor 5029 - [nsx@6876 comp="global-manager" level="INFO" subcomp="global-manager"] ===== APPLICATION IS GOING RESTART (GMLE leadership safety violation handler triggered for groupType: gm) =====
NSXT Global manager 4.x
Workaround:
If the UI is not accessible, please try below steps below to restore UI access. These steps will be run on the NSX manager that failed the upgrade due to waiting for the shutdown of CORFU.
a) From root, restart the corfu-server with the command below
/etc/init.d/corfu-server restart
b) From root restart proxy service with the command below /etc/init.d/proxy restart
c) Wait for a few minutes to for all cluster services to come up, then as admin run below command cli> get cluster status
d) Login to UI and retry the upgrade again