SSR node remains in "Upgrading" status in conductor GUI forever, once upgrade is triggered and failed.

In the installer logs, we will be able to see similar salt-call event.send timeouts.

DEBUG - Reason: Command '['salt-call', 'event.send', 'salt/128t/install', '{"data": {"reboot-required": false, "status": "success", "text": "Installer complete", "timestamp": "2023-03-03T03:13:33.903184"}}']' timed out after 15 seconds

DEBUG - Event is considered critical

ERROR - Unable to send critical salt event: status = 'Status.SUCCESS'; timestamp = '2023-03-03T03:13:33.903184'; text = 'Installer complete'

This happens when there is salt connectivity issue between router and conductor.

1. Check the asset status in Conductor/Router and ensure it is "Running".

2. Run "show system connectivity" from the router PCLI and ensure router is "Connected" with conductor.

3. check salt-minion logs and ensure no issues with salt connectivity.

4. If you have console access, consider stopping salt-minion and perform command "salt-call -l debug test.ping" from router shell and ensure its success.

For salt issues, advanced troubleshooting guide is available at https://supportportal.juniper.net/s/article/Troubleshoot-Conductor-Router-Node-Asset-Salt-Connectivity