Randomly I checked the error logs of arcgis portal, I found an error saying "
The portal has been initialized and configured but is not accessible. The internal portal database does not appear to be running or accepting connections. Restart the portal machine or machines and if the problem persists, contact Esri technical support (U.S.) or your distributor (customers outside the U.S.).
Do I need to do anything from our side ?
In my experience I "think" those message are simply system checks that fail because the portal is restarting. I have never had an issue with them as long as the portal starts successfully and the message stop showing up in the logs. Its a very big problem if all you see in your logs is that message and your portal is not working.