无法 Build 新连接：[Errno 10061]无法 Build 连接，因为目标计算机主动拒绝连接

我一直收到这个错误：

/ entities / pull-ipam-types / HTTPConnectionPool上的ConnectionError（host = '10 .30.0.10'，port = 7777）：使用url超出最大重试次数：/ devices / resources / IPamTypes /（由NewConnectionError引起（'：无法 Build ）一个新的连接：[Errno 10061]没有连接，因为目标机器主动拒绝它'，））

在这个功能：

def pull_ipam_types(request):
    #ftp_host = FTPConfiguration.objects.all()[0].FTP_HOST
    #url = 'http://' + ftp_host + ':7777/devices/resources/IPamTypes/'
    # resp = requests.get(url, headers={'User-Agent': 'Definitely-Not-Requests'}, auth = ('user', '123456'))
    resp = requests.get('http://' + FTPConfiguration.objects.all()[0].FTP_HOST +
                        ':7777/devices/resources/IPamTypes/', auth=('user', '123456')) #olivera auth=('user', '123456'))
    ret_message = 'Pulled successfully. '

    # 1) get old types
    old_ipam_types = []
    for one_type in IpamType.objects.all():
        old_ipam_types.append(one_type.type)

    # 2) get new types
    new_ipam_types = []
    if resp.status_code != 200:
        # This means something went wrong.
        messages.error(request, 'Error ' + resp.status_code + ' during REST request, review your FTP configuration.')
        return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))
    else:
        for one_type in resp.json():
            new_ipam_types.append(one_type)

    # 3) create list of added and removed.
    added_ipams = []
    for new_ipam in new_ipam_types:
        is_found = False # current old still exists
        for old_ipam in old_ipam_types:
            if old_ipam == new_ipam:
                is_found = True
        # new_ipam added
        if not is_found:
            added_ipams.append(new_ipam)

    removed_ipams = []
    for old_ipam in old_ipam_types:
        is_found = False # current old still exists
        for new_ipam in new_ipam_types:
            if old_ipam == new_ipam:
                is_found = True
        # old_ipam removed
        if not is_found:
            removed_ipams.append(old_ipam)

    # 4) check that all removed are not used + error message in case they are used.
    removed_ipam_ids = IpamType.objects.filter(type__in=removed_ipams).values_list('id', flat=True)
    entity_ids = Parameter.objects.filter(ipam_type__in=removed_ipam_ids).values_list('entity_id', flat=True)
    if len(entity_ids) > 0:
        relevant_entites = Entity.objects.filter(id__in=entity_ids).values_list('name', flat=True)
        messages.error(request, "FAILURE. Some IPAM types that were removed from " +
                       "NetAce are still used by some of the entities in ME.\n Relevant IPAM types are: " +
                       ', '.join(removed_ipams) + ".\n Relevant Entities are: " + ', '.join(relevant_entites) +
                       ".\n Please fix those entites before pulling IPAM types.")
        return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))

    # 5) remove + append message: xxx removed
    if len(removed_ipams) > 0:
        IpamType.objects.filter(type__in=removed_ipams).delete()
        ret_message = ret_message + 'Removed IPAM Types: ' + ', '.join(removed_ipams) + '.\n'

    # 6) add + append message: yyy added.
    if len(added_ipams) > 0:
        ret_message = ret_message + 'Added IPAM Types: ' + ', '.join(added_ipams) + '.\n'
        for new_ipam in added_ipams:
            IpamType.objects.get_or_create(type=new_ipam)

    if len(removed_ipams) == 0 and len(added_ipams) == 0:
        ret_message = 'There are no new IPAM Types to pull'

    messages.success(request, ret_message)
    # context = get_base_context()
    # return render_to_response('left_container.html', context)
    return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))
)