PostgreSQL launchd configuration

org.postgresql.postgresqld.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>Disabled</key>
    <false/>
    <key>Label</key>
    <string>org.postgresql.postgresqld.plist</string>
    <key>ProgramArguments</key>
    <array>
      <string>/usr/local/pgsql/bin/postgres</string>
      <string>-D/usr/local/pgsql/data</string>
      <string>--logging_collector=YES</string>
      <string>--log_connections=on</string>
      <string>--log_directory=/usr/local/pgsql/log</string>
      <string>--log_filename=postgres_%Y-%m-%d_%H:%M.log</string>
      <string>--log_rotation_size=1024</string>
    </array>
    <key>RunAtLoad</key>
    <true/>
    <key>UserName</key>
    <string>trevorsheridan</string>
    <key>KeepAlive</key>
    <dict>
      <key>SuccessfulExit</key>
      <false/>
    </dict>
  </dict>
</plist>

Replace UserName key's value (trevorsheridan) with your username