My OKD 4.8 single node deployment has been up for more than a month now. Then today it started acting (pods not being created). So I thought maybe I reboot the node. I shut it down via the AWS console. And then I started it again.

However, after restart, it is not responding. The node is running but OKD is not accessible. Neither the console nor the API can be reached. Any oc command results in "The connection to the server api.api1.hostname.info:6443 was refused - did you specify the right host or port?"

The domain name and all zones are hosted by AWS.

Any troubleshooting ideas?