title: php-fpm Couldn't resolve host 'sandbox.itunes.apple.com'
body: <p>ping is ok,PING sandbox.itunes-apple.com.akadns.net (17.154.66.159) 56(84) bytes of data.
  cli ，php is working,
  but，nginx php-fpm is not working，tip（Couldn't resolve host 'sandbox.itunes.apple.com'） </p>