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重要若实例已切换为专有网络但同时仍保留着经典网络（网络混访模式），实例的网络类型将显示为专有网络。此时若收到阿里云经典网络下线相关邮件通知，说明您还未删除经典网络连接地址，该实例依然会受到经典网络下线计划影响（如不可...

使用VPC对等连接实现VPC私网互通

步骤三：互通性验证说明注意检查网络ACL 与安全组的配置，避免网络连通性测试受到影响。例如，使用 ping 私网地址命令，需要您在安全组放行ICMP协议规则。登录ECS1实例，访问ECS2实例的私网IP地址。登录ECS2实例，访问ECS1实例的私网...

网络分析

网络错误次数用于显示网络错误，及其时间趋势和错误详情。网络请求耗时用于显示网络响应时间，及其时间趋势。DNS请求耗时用于显示DNS响应时间，及其时间趋势。SSL请求耗时用于显示SSL响应时间，及其时间趋势。TCP请求耗时用于显示TCP...

云资源安全

将RDS限制在VPC内网可访问将RDS的网络类型从默认的经典网络切换为VPC，一般选择ECS实例所在的VPC，实现同一VPC下的ECS对 RDS的内网互通。如果自有服务器也需要访问RDS，可以通过VPN或者专线，将自建IDC的服务器资源接入阿里云。（二）数据...

流量镜像

安全规则报文在从镜像源复制时不受安全组和网络ACL策略的限制，但报文在复制至镜像目的时会受安全组和网络ACL策略的限制。因此，需要在镜像目的所在的安全组和网络ACL中配置以下规则：安全组规则：入方向允许镜像源弹性网卡的IP访问目的...

X-Pack Watcher集群报警

新网络架构下，X-Pack Watcher功能受到网络限制，需要借助私网连接功能打通网络限制。更多信息，请参见配置实例私网连接和【通知】网络架构调整。阿里云Elasticsearch的X-Pack Watcher功能不支持直接与公网通讯，需要基于实例的私网地址...

C++ Demo

if defined_WIN32 string UTF8ToGBK(const string&strUTF8){ int len=MultiByteToWideChar(CP_UTF8,0,strUTF8.c_str(),-1,NULL,0);unsigned short*wszGBK=new unsigned short[len+1];memset(wszGBK,0,len*2+2);MultiByteToWideChar(CP_UTF8...

使用限制

MaxCompute Graph程序中的GraphLoader、Vertex、Aggregator等在集群运行时，受到Java沙箱的限制（Graph作业的主程序则不受此限制），具体限制请参见 Java沙箱。更多Graph信息，请参见 Graph。其他限制各地域下的单个MaxCompute项目支持...

使用MTR工具进行网络链路分析

整条链路节点延迟平均值介于1.8-17.6之间，显示整条链路网络延迟较低。基于以上几条分析结论，可以判断实例中的网络链路正常。如果实际业务网络中确实存在网络波动，可以结合反向链路测试结果进行分析。说明对网络结果分析的思路较为灵活...

测试环境

本文介绍云数据库RDS SQL Server性能测试所使用的环境。所有测试均在华东1（杭州）地域的可用区B完成。测试用的ECS的实例规格族为计算型C1。配置为8核8 GB。网络类型为经典网络。压测用的镜像为Win2012 64位标准版。

进阶配置

代理配置使用场景 网络受限环境：当您的应用程序运行在需要通过代理服务器访问外部网络的环境中（如企业内网、防火墙限制），可以通过代理配置实现对外部服务的访问。流量监控：在开发或测试阶段，可以通过代理捕获和分析请求流量，便于...

进阶配置

代理配置使用场景 网络受限环境：当您的应用程序运行在需要通过代理服务器访问外部网络的环境中（如企业内网、防火墙限制），可以通过代理配置实现对外部服务的访问。流量监控：在开发或测试阶段，可以通过代理捕获和分析请求流量，便于...

ACK容器的应用交付网络设计

概述简介本文致力于为Kubernetes（简称k8s）集群提供一份详尽的网络入口设计指南，特别关注Service与Ingress这两大核心组件的设计策略。在网络配置中，确保Kubernetes集群内服务间及外部对服务访问的高效性和安全性至关重要。正确理解和...

数据探索（Beta）

单击运行（或快捷键F8），下方会展示查询进度状态，当查询完毕时会直接显示查询结果。查询结果会分页展示，受前端限制目前最多展示10000条数据。如需获取全部查询结果，可以在配置存储路径之后进入OSS查看，或直接点击下载。重要 DLF-...

云服务器ECS安全性

云产品安全形势网络安全威胁态势近年来网络安全威胁越来越多，各种安全事件频出，根据Splunk发布的《2022年全球网络安全态势报告》数据显示：49%的企业表示，他们在过去两年中遭受了数据泄露，比一年前调查中的39%有所增加。79%的受访者...

ECS实例从经典网络迁移到专有网络

由于经典网络类型的ECS实例预计于2025年02月28日起停止服务（请参见公告），建议您将经典网络ECS实例迁移到专有网络，相比经典网络，专有网络（VPC）中的ECS实例更加安全并且支持使用弹性公网IP（EIP）等更丰富的功能。本文介绍如何使用...

ECS实例从经典网络迁移到专有网络

相对于经典网络，专有网络VPC提供了更高的安全性、更强的隔离性和更灵活的网络配置能力。本文介绍如何使用实例迁移计划功能将一台或多台ECS实例从经典网络迁移到专有网络。背景说明阿里云在早期使用的网络类型为经典网络，2014年，阿里云...

特殊场景下网页版的表格显示与Outlook有差异

而MS-TNEF是一种专有格式，所以在跨平台和跨邮件客户端的使用上可能会受到限制，一些邮件客户端可能无法正确识别和显示。若有不支持的格式，为兼容更多内容的显示，将按text/plain进行展示。例1：Content-Type:text/plain;charset=utf-8 ...

管理IP白名单

关闭IP白名单执行如下命令关闭IP白名单功能，公网和云产品互联网络、VPC网络访问将不受限制。setproject odps.security.ip.whitelist=odps.security.vpc.whitelist=;说明公网和云产品互联网络IP、VPC网络IP的白名单必须同时置为空，才...

如何确认ECS和Tair的网络环境是否相同

为了使ECS实例与云数据库 Tair（兼容 Redis）实例通过内网连接，您需要确保二者的网络类型同为经典网络，或者同为专有网络（VPC）且所属的VPC相同。查看ECS实例的网络类型登录 ECS管理控制台。在左侧导航栏，选择实例与镜像实例。在...

1.91.2版本

当内存足够大时，所有的数据均缓存在内存page cache中，不受到磁盘带宽的限制，仅受机器的网络带宽限制。当内存不足以缓存整个文件时，下载的数据需要落盘，读取数据也需要从磁盘读，因此读性能同时会受到磁盘带宽和网络带宽限制。一般磁盘...

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