README.txt

create this file in /Library/LaunchDaemons/org.basho.riak.plist
run: sudo launchctl load /Library/LaunchDaemons/org.basho.riak.plist
riak ping to verify

org.basho.riak.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
  "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>org.basho.riak</string>
  <key>ProgramArguments</key>
  <array>
    <string>/usr/local/riak/bin/riak</string>
    <string>start</string>
  </array>
  <key>RunAtLoad</key>
  <true/>
  <key>WorkingDirectory</key>
  <string>/usr/local/riak</string>
  <key>StandardErrorPath</key>
  <string>/dev/null</string>
  <key>StandardOutPath</key>
  <string>/dev/null</string>
  <key>UserName</key>
  <string>USERNAME_TO_RUN_RIAK</string>
</dict>
</plist>