It seems that notifications are broken at HEAD (I just updated this morning). I can reproduce this by going to https://secure.phabricator.com/notification/status/ and clicking the "Send Test Notification" button... no notification is generated.
Running the Aphlict server in debug mode and it seems that the Aphlict client isn't connecting to the server:
josh@ip-10-154-233-161:/usr/src/phabricator$ sudo -u aphlict ./bin/aphlict debug Starting Aphlict server in foreground... Launching server: $ 'nodejs' '/usr/src/phabricator/support/aphlict/server/aphlict_server.js' '--client-port=' '--admin-port=22281' '--admin-host=notifications.phabricator.example.com' '--log=/mnt/logs/phd/aphlict.log' [Tue Apr 21 2015 21:10:42 GMT-0400 (EDT)] Started Server (PID 25585) [Tue Apr 21 2015 21:10:50 GMT-0400 (EDT)] Received notification (/ws/): {"key":"6140364635350858376","type":"notification","subscribers":["PHID-USER-abzwhc667osh5mwd4gk7"]} [Tue Apr 21 2015 21:11:10 GMT-0400 (EDT)] Received notification (/ws/): {"key":"6140364722522583513","type":"notification","subscribers":["PHID-USER-abzwhc667osh5mwd4gk7","PHID-USER-inwz7rtaiuxgmjduhmmq","PHID-USER-bz6h6qr3rnvduuvt2dfa","PHID-USER-mw6ockgrrgytq3d3yywa","PHID-USER-zalu2g5i2e3tpp62so6r","PHID-USER-3u5vybbidp7ael5ebh6z","PHID-USER-fe5ogccly4vh32ncsr3g"]} [Tue Apr 21 2015 21:11:11 GMT-0400 (EDT)] Received notification (/ws/): {"key":"6140364726029263184","type":"notification","subscribers":["PHID-USER-abzwhc667osh5mwd4gk7","PHID-USER-inwz7rtaiuxgmjduhmmq","PHID-USER-mw6ockgrrgytq3d3yywa","PHID-USER-3u5vybbidp7ael5ebh6z"]} [Tue Apr 21 2015 21:11:11 GMT-0400 (EDT)] Received notification (/ws/): {"key":"6140364726786271339","type":"notification","subscribers":["PHID-USER-abzwhc667osh5mwd4gk7","PHID-USER-inwz7rtaiuxgmjduhmmq","PHID-USER-mw6ockgrrgytq3d3yywa","PHID-USER-3u5vybbidp7ael5ebh6z"]} [Tue Apr 21 2015 21:11:14 GMT-0400 (EDT)] Received notification (/ws/): {"key":"6140364740738710091","type":"notification","subscribers":[]} [Tue Apr 21 2015 21:12:58 GMT-0400 (EDT)] Received notification (/ws/): {"key":"6140365187631354850","type":"notification","subscribers":["PHID-USER-abzwhc667osh5mwd4gk7","PHID-USER-inwz7rtaiuxgmjduhmmq","PHID-USER-bz6h6qr3rnvduuvt2dfa","PHID-USER-mw6ockgrrgytq3d3yywa","PHID-USER-zalu2g5i2e3tpp62so6r","PHID-USER-hfenohlvucsbthy2su73","PHID-USER-fe5ogccly4vh32ncsr3g"]} [Tue Apr 21 2015 21:13:01 GMT-0400 (EDT)] Received notification (/ws/): {"key":"6140365194686820164","type":"notification","subscribers":[]}