Integrated remote management controllers (iRMC) in servers are priceless tools to manage hardware remotely. You can check the system state, reboot or shut down the hardware or open a remote console window withou being on site. Usually these systems have a web based user interface. Unfortunately sometimes webservers fail and stop responding. Good to know that it is possible to restart the iRMC from a SSH connection.
All you need to do is connecting a SSH client (e.g. Putty) to the address of the management controller. Login with your usual credentials that you use to login on the iRMC webserver (like admin / myPass)
After login you’ll see a simple menu.
To restart iRMC choose option (4) “Service Processor”. From the sub-menu you can trigger a warm or cold reset of the service processor.
After a couple of seconds you should be able to login at the web UI again.