The pserve command's daemonization features, as well as --monitor-restart , have been deprecated. This includes the [start,stop,restart,status] subcommands, as well as the --daemon , --stop-daemon , --pid-file , --status , --user , --group , and --log-file flags. See https://github.com/Pylons/pyramid/pull/2120 and https://github.com/Pylons/pyramid/pull/2189 and https://github.com/Pylons/pyramid/pull/1641 and https://github.com/Pylons/pyramid/pull/2329

Please use a real process manager in the future instead of relying on pserve to daemonize itself. Many options exist, including your operating system's services, such as Systemd or Upstart, as well as Python-based solutions like Circus and Supervisor.

See https://github.com/Pylons/pyramid/pull/1641 and https://github.com/Pylons/pyramid/pull/2120