本文介绍如何使用Python SDK创建一个SLB实例，创建成功后删除该实例。
前提条件
在开始运行示例脚本前，确保您已完成以下准备工作：
- 因为使用Python SDK创建CLB实例会产生实例费，所以确保您的阿里云账户金额不少于100元。
- 确保您已经有了用于身份验证的AccessKey ID和AccessKey Secret。具体操作，请参见获取AccessKey。
- 下载阿里云负载均衡Python SDK场景示例的CLB Python Example库。更多信息，请参见CLB Python Example库。
进入setup.py所在的目录，执行以下命令，完成环境初始化配置。
python setup.py install
背景信息
在华北3（张家口）地域创建一个名为SLB1的SLB实例，主可用区为cn-zhangjiakou-a，备可用区为cn-zhangjiakou-b，实例计费类型为按量计费，规格为slb.s1.small，监听的带宽峰值为1Mbps，其他参数使用默认值。实例创建成功后，删除该实例。
操作步骤
- 在下载的SDK目录中，打开aliyun-openapi-python-sdk-examples\sdk_examples\examples\slb文件夹。
- 使用编辑器打开slb_quick_start.py文件，您需要配置用户鉴权参数ACS_CLIENT，其他参数根据实际情况配置后，保存退出。说明 因为用户鉴权是每个SDK必须执行的操作，所以可以在常量文件中配置AcsClient参数的值，在场景代码中调用常量文件。
# encoding=utf-8 import sys import json # 调用AcsClient参数进行身份验证 from aliyunsdkcore.client import AcsClient # 使用阿里云官方sdk的异常处理模块 from aliyunsdkcore.acs_exception.exceptions import ServerException, ClientException # 调用上传证书的API from aliyunsdkslb.request.v20140515 import UploadServerCertificateRequest # 调用创建SLB实例API from aliyunsdkslb.request.v20140515 import CreateLoadBalancerRequest # 调用添加默认服务器组API from aliyunsdkslb.request.v20140515 import AddBackendServersRequest # 调用创建HTTPS监听的API from aliyunsdkslb.request.v20140515 import CreateLoadBalancerHTTPSListenerRequest # 调用修改HTTPS监听的API from aliyunsdkslb.request.v20140515 import SetLoadBalancerHTTPSListenerAttributeRequest # 调用删除SLB实例API from aliyunsdkslb.request.v20140515 import DeleteLoadBalancerRequest ##异常处理逻辑 from sdk_lib.exception import ExceptionHandler # 命令行导入日志 from sdk_lib.common_util import CommonUtil # 用户身份鉴权参数配置 ACS_CLIENT = AcsClient( 'your-access-key-id', # your-access-key-id 'your-access-key-secret', # your-access-key-secret 'cn-zhangjiakou', # your-region-id ) # 失败重试次数 TRY_TIME = 3 ''' 创建slb实例->上传服务器证书->创建https监听->上传新的服务器证书 ->循环修改https监听配置 ''' def create_load_balancer(params): ''' create_load_balancer：创建slb实例 官网API参考链接：help.aliyun.com/document_detail/27577.html ''' try: # 设置创建SLB实例的调用参数 request = CreateLoadBalancerRequest.CreateLoadBalancerRequest() request.set_MasterZoneId(params["master_zone_id"]) request.set_SlaveZoneId(params["slave_zone_id"]) request.set_LoadBalancerName(params["load_balancer_name"]) request.set_PayType(params["pay_balancer_type"]) # 发送调用请求并接收返回数据 response = ACS_CLIENT.do_action_with_exception(request) response_json = json.loads(response) # 返回结果 return response_json except ServerException as e: ExceptionHandler.server_exception(e) except ClientException as e: ExceptionHandler.client_exception(e) def add_backend_servers(params): ''' add_backend_servers：添加后端服务器 ''' counter = 0 while counter < TRY_TIME: try: # 设置添加默认服务器组的调用参数 request = AddBackendServersRequest.AddBackendServersRequest() # 负载均衡实例的ID request.set_LoadBalancerId(params["load_balancer_id"]) # 要添加的后端服务器列表 request.set_BackendServers(params["backend_servers"]) # 发送调用请求并接收返回数据 response = ACS_CLIENT.do_action_with_exception(request) response_json = json.loads(response) # 返回结果 return response_json except ServerException as e: if ExceptionHandler.server_exception(e): return e except ClientException as e: if ExceptionHandler.client_exception(e): return e finally: counter += 1 def upload_server_certificate(params): ''' upload_server_certificate：上传服务器证书 ''' counter = 0 while counter < TRY_TIME: try: request = UploadServerCertificateRequest.UploadServerCertificateRequest() # 要上传的公钥证书 request.set_ServerCertificate(params["server_certificate"]) # 需要上传的私钥 request.set_PrivateKey(params["private_key"]) # 发送调用请求并接收返回数据 response = ACS_CLIENT.do_action_with_exception(request) response_json = json.loads(response) # 返回结果 return response_json except ServerException as e: ExceptionHandler.server_exception(e) except ClientException as e: ExceptionHandler.client_exception(e) finally: counter += 1 def create_https_listener(params): ''' create_https_listener：创建HTTPS监听 ''' counter = 0 while counter < TRY_TIME: try: request = CreateLoadBalancerHTTPSListenerRequest.CreateLoadBalancerHTTPSListenerRequest() # 负载均衡实例的ID request.set_LoadBalancerId(params["load_balancer_id"]) # 监听的带宽峰值 request.set_Bandwidth(params["bandwidth"]) # 负载均衡实例前端使用的端口 request.set_ListenerPort(params["listener_port"]) # 是否开启健康检查 request.set_HealthCheck(params["health_check"]) # 是否开启会话保持 request.set_StickySession(params["sticky_session"]) # 负载均衡实例后端使用的端口 request.set_BackendServerPort(params["backend_server_port"]) # 服务器证书的ID request.set_ServerCertificateId(params["server_certificate_id"]) # 发送调用请求并接收返回数据 response = ACS_CLIENT.do_action_with_exception(request) response_json = json.loads(response) # 返回结果 return response_json except ServerException as e: ExceptionHandler.server_exception(e) except ClientException as e: ExceptionHandler.client_exception(e) finally: counter += 1 def set_https_listener_attribute(params): ''' set_https_listener_attribute：修改HTTPS监听的配置 ''' counter = 0 while counter < TRY_TIME: try: request = SetLoadBalancerHTTPSListenerAttributeRequest.SetLoadBalancerHTTPSListenerAttributeRequest() # 负载均衡实例的ID request.set_LoadBalancerId(params["load_balancer_id"]) # 监听的带宽峰值 request.set_Bandwidth(params["bandwidth"]) # 负载均衡实例前端使用的端口 request.set_ListenerPort(params["listener_port"]) # 是否开启健康检查 request.set_HealthCheck(params["health_check"]) # 是否开启会话保持 request.set_StickySession(params["sticky_session"]) # 服务器证书的ID request.set_ServerCertificateId(params["server_certificate_id"]) # 发送调用请求并接收返回数据 response = ACS_CLIENT.do_action_with_exception(request) response_json = json.loads(response) # 返回结果 return response_json except ServerException as e: ExceptionHandler.server_exception(e) except ClientException as e: ExceptionHandler.client_exception(e) finally: counter += 1 def delete_load_balancer(load_balancer_id): ''' delete_load_balancer：删除slb实例 ''' try: # 设置删除SLB实例的调用参数 request = DeleteLoadBalancerRequest.DeleteLoadBalancerRequest() # 负载均衡实例的ID request.set_LoadBalancerId(load_balancer_id) # 发送调用请求并接收返回数据 response = ACS_CLIENT.do_action_with_exception(request) response_json = json.loads(response) # 返回结果 return response_json except ServerException as e: ExceptionHandler.server_exception(e) except ClientException as e: ExceptionHandler.client_exception(e) def main(): params = {} # 设置创建SLB实例的参数 # 设置新建SLB实例的主可用区为cn-zhangjiakou-a params["master_zone_id"] = "cn-zhangjiakou-a" # 设置新建SLB实例的备可用区为cn-zhangjiakou-b params["slave_zone_id"] = "cn-zhangjiakou-b" # 设置新建SLB实例的名称为SLB1 params["load_balancer_name"] = "SLB1" # 设置新建SLB实例的计费类型为按量计费 params["pay_balancer_type"] = "PayOnDemand" # 设置添加到默认服务器组的ECS的实例ID和权重 params["backend_servers"] = [{"ServerId": "i-8vbe8yixxxxxxxxxxxxxw", "Weight": "100"}, {"ServerId": "i-8vbe8yxxxxxxxxxxxxxj9v", "Weight": "100"}] # 设置上传服务器证书的参数 # 设置创建HTTPS监听的参数 # 关闭健康检查 params["health_check"] = "off" # 设置监听的带宽峰值 params["bandwidth"] = 6 # 负载均衡实例前端使用的端口 params["listener_port"] = 80 # 设置负载均衡实例后端使用的端口 params["backend_server_port"] = 443 # 关闭会话保持 params["sticky_session"] = "off" # 创建slb实例 # 获取create_load_balancer函数返回值，load_balancer_json为结果的json串 load_balancer_json = create_load_balancer(params) # 打印 load_balancer_json结果，其中"create_load_balancer"是对json串起的名字 CommonUtil.log("create_load_balancer", load_balancer_json) # 上传服务器证书 # 要上传的公钥证书 params["server_certificate"] = "-----BEGIN CERTIFICATE-----xxxxxxx-----END CERTIFICATE-----" params["private_key"] = "-----BEGIN RSA PRIVATE KEY-----xxxxxxxxxxx-----END RSA PRIVATE KEY-----" result_json = upload_server_certificate(params) CommonUtil.log("upload_server_certificate", result_json) params["server_certificate_id"] = result_json["ServerCertificateId"] # slb实例id params["load_balancer_id"] = load_balancer_json["LoadBalancerId"] # 创建https监听 result_json = create_https_listener(params) CommonUtil.log("create_https_listener", result_json) # 上传新的服务器证书 # 要上传的新公钥证书 params["server_certificate"] = "-----BEGIN CERTIFICATE-----xxxxxxx-----END CERTIFICATE-----" params["private_key"] = "-----BEGIN RSA PRIVATE KEY-----xxxxxxxxxxx-----END RSA PRIVATE KEY-----" result_json = upload_server_certificate(params) CommonUtil.log("upload_server_certificate", result_json) params["server_certificate_id"] = result_json["ServerCertificateId"] # 修改https监听配置 result_json = set_https_listener_attribute(params) CommonUtil.log("set_https_listener_attribute", result_json) # 删除slb实例 # 删除返回的LoadBalancerId对应的SLB实例 load_balancer_json = delete_load_balancer(load_balancer_json["LoadBalancerId"]) # 打印 load_balancer_json结果 CommonUtil.log("delete_load_balancer", load_balancer_json) if __name__ == "__main__": sys.exit(main()) - 进入slb_quick_start.py所在的目录，执行如下命令，运行创建和删除SLB实例示例。
python slb_quick_start.py系统显示类似如下：---------------------------create_load_balancer--------------------------- { "VpcId": "", "AddressIPVersion": "ipv4", "LoadBalancerName": "SLB1", "ResourceGroupId": "rg-acfmxxxxxxxxxy", "VSwitchId": "", "RequestId": "070A9361-EA2B-4A4E-91E8-F70C1E47866A", "Address": "172.16.XX.XX", "NetworkType": "classic", "LoadBalancerId": "lb-8vbninnfxxxxxxxxxxxxx" } ---------------------------delete_load_balancer--------------------------- { "RequestId": "4825E5BB-5131-4A1E-AF67-0EF3E8E5B323" }