The systemd journal doesn't show messages from logger or any other program that uses syslog() to generate logs

Issue

• I notice that the logger command in RHEL7 does nothing. No message shows up in /var/log/messages or in the systemd journal.

  ~]# tail -fn0 /var/log/messages & journalctl -fn0 &
  [1] 1513
  [2] 1514
  -- Logs begin at Thu 2016-01-14 13:49:43 EST. --
  
  ~]# logger testing testing
  ~]# 
  

  Logs from systemd itself (e.g., unit starting and stopping) are present in the journal:

  ~]# journalctl -fn0&
  [1] 1559
  -- Logs begin at Thu 2016-01-14 13:49:43 EST. --
  ~]# systemctl restart chronyd
  Jan 14 14:05:17 r72.example.com systemd[1]: Starting NTP client/server...
  Jan 14 14:05:17 r72.example.com systemd[1]: Started NTP client/server.
  

  However, log messages from daemons don't appear, e.g., normally when starting chronyd.service above there should be messages from chronyd itself about version, driftfile and source-selection