def stop():
    '''
    Stop Riak

    .. versionchanged:: 2015.8.0

    CLI Example:

    .. code-block:: bash

        salt '*' riak.stop
    '''
    ret = {'comment': '', 'success': False}

    cmd = __execute_cmd('riak', 'stop')

    if cmd['retcode'] != 0:
        ret['comment'] = cmd['stderr']
    else:
        ret['comment'] = cmd['stdout']
        ret['success'] = True

    return ret