Forum OpenACS Q&A: Re: getting nsssl and nssock errors when starting service
The important lines of the posted snippet are:
[02/Oct/2019:15:32:10][4508.7f347d230700][-driver:nsssl_v4:0-] Error: nsssl_v4:0: failed to listen on [188.8.131.52]:8443: Address already in use ... [02/Oct/2019:15:32:10][4508.7f347ca2f700][-driver:nssock_v4:0-] Error: nssock_v4:0: failed to listen on [184.108.40.206]:8000: Address already in use
Normally service files of systemd take care of starting/stopping the server. You can call all running instances on most Unix systems via "sudo killall nsd". For soft shutdowns, NaviServer tries to perform a graceful shutdown, terminating background services, waiting for running jobs etc., so shutdown might take a few seconds.