Apache Zeppelin 0.7.3 - http error 503 in browser

The workaround was:

  1. Install Java 8, following How to set or change the default Java (JDK) version on OS X?, i.e.

    brew tap caskroom/versions
    brew cask install java8
    export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
    
  2. Then:

    sudo bash
    zeppelin-daemon.sh start
    /Applications/Safari.app/Contents/MacOS/Safari
    
  3. Point browser to: http://localhost:8080

Success! Conclusions:

  1. Zeppelin 0.7.3 only supports Java <= 8.0

  2. zeppelin-daemon.sh must be run as root, but browser doesn't have to be