Troubleshooting

This guide explains how to determine, diagnose, and fix issues you might encounter when using NGINX Instance Manager.

This documentation applies to NGINX Instance Manager 2.0.0 and later.

Known Issues

View the known issues and possible workarounds in NGINX Instance Manager.

How To Look Up the Installed Version

To see which version of Instance Manager is installed, run the following command:
- CentOS, RHEL, RPM-Based
- Debian, Ubuntu, Deb-Based
```
yum info nms-instance-manager
```
```
dpkg -s nms-instance-manager
```

Newly installed NGINX instances aren’t returned

Issue

After installing NGINX and the NGINX Agent on an instance, the instance is not returned when calling GET https://hostname/api/platform/v1/systems.

Solution

The NGINX service needs to be running before you start the NGINX Agent service.

To resolve the issue, try restarting the NGINX Agent service:
```
sudo systemctl restart nginx-agent
```