移動dns系統擴容改造項目技術建議書-資料下載頁

　　

【正文】 數據倉庫基礎上的分析系統，能夠對 AppManager 收集的各種數據進行有效的統計、分析從中挖掘出有用的信息，為領導決策、故障分析和預警提供有力的依據。Appmanager的 Analysis Center提供給用戶功能強大，類型極為豐富的多種報表，如服務水平報表，性能報表，趨勢分析報表等等，且報表查詢快捷，可靈活定制。用戶可以自行定制報表中要分析的數據、數據的時間段、數據如何進行計算（均值、最大最小值、求和或者用戶指定算法）、報表的表現形式（柱狀圖、餅型圖、點線圖等）、報表中的數據粒度（比如在日報表中可以指定是 1小時聚合一次數據還是 2小時聚合一次數據；1 小時聚合一次，則日報中包含 24個數據點，2 小時聚合一次則日報中包含 12個數據點）等等。由于 Analysis Center支持豐富的報表類型，因此制作報表時，需要根據查看報表的人員角色不同選擇合適的報表模板。對于管理人員，只需要提供有關系統整體狀況的報表，而不需要關心具體的性能報表。如下圖通過 Dashboard模板使得用戶可在一張報表中分別從系統資源使用情況、業務響應時間、應用服務器性能狀況幾個不同的角度清晰地了解到系統的整體狀況：移動 DNS 系統擴容改造項目技術建議書39圖：分析中心服務性能報表同時利用分析中心，可以按照自身需要組織相關的趨勢報告，了解系統整體發展的趨勢情況，使管理人員能夠根據業務發展情況根據發展趨勢及時對系統進行升級及調整，提高 DNS 系統的可用性及性能。圖：DNS 服務器 Qps 一日分布趨勢移動 DNS 系統擴容改造項目技術建議書40圖：分析中心性能趨勢圖移動 DNS 系統擴容改造項目技術建議書41附件 軟件性能測試對比數據VANTIO 服務器性能測試結果下表是 VANTIO Version SUN X4100（ Opteron，4G 內存，Solaris 10 for X86）的單臺服務器測試環境下的 QPS數據：Remote ANS Local ANSHardwareCold Cache Hot Cache Cold Cache Hot Cacheqps Latency qps latency qps latency qps latency18467 108892 .3 16586 108978 .318396 110177 .3 16498 108738 .318743 111212 .4 16830 110092 .418400 111572 .5 16838 110195 .517969 111205 .5 16575 110658 .518513 112255 .6 16596 110753 .618530 112421 .6 16286 110387 .718929 112228 .6 16256 110762 .718617 112449 .6 16195 111226 .918899 111878 16513 110418 .9X4100 cpu2G MemSolaris 1018387 111569 16525 111933 CPU Load 30%從上表結果可以看出，VANTIO 完全可以滿足**移動的現網需求。VANTIO 和 Bind的比較數據Sun Fire V480，2 x Sparc，2G 內存VANTIOQPS 查詢丟失率 CPU利用率 延遲（秒）6500 % 33% 移動 DNS 系統擴容改造項目技術建議書426387 % 34% 6489 % 33% 6687 % 33% BIND V9QPS 查詢丟失率 CPU利用率 延遲（秒)5863 % 89% 5765 % 89% 5976 % 89% 5376 % 89% 下表是在 SUN V20Z 上的測試結果 (AMD Opteron 242 x2 / 2G)VANTIOQPS 查詢丟失率 CPU利用率 延遲（秒）51632 % 85% 52356 % 86% 51668 % 85% 51679 % 85% BINDQPS 查詢丟失率 CPU利用率 延遲（秒)5800 % 95% 8394 % 95% 6640 % 95% 9874 % 95% 移動 DNS 系統擴容改造項目技術建議書43附錄 A – VANTIO和 BIND的功能比較Features CNS BIND 9 CommentsCarriergrade DesignOptimized Caching Server ? ?Nominum’s Caching Name Server is optimized for caching services. Separation of caching tasks from authoritative services delivers better performance optimization and scalability.IPv6 ? ? IPv6 allows for future headroom for your work.Rapid Feature Additions and Updates ? ? With Nominum39。s engineering expertise, features and functionality can be added, tested and deployed rapidly.Management SuiteCommand Channel ? ? Powerful mand line interface allowing plete configuration control.APIs ? ? Application Program Interfaces for PERL, JAVA, C, Python, SOAP/XML to interoperate with existing infrastructures.Live Cache Flush ? ? Cache can be discarded without restarting the serverSelective Cache Flush ? ? Specific portions of the cache can be discarded and without restarting the serverSecure Remote Configuration ? ? Remote configuration and management delivers simplified deployment and management.Optimized Memory Management ? ?CNS uses highlytunes algorithms specifically designed to manage caching server traffic patterns. Allows administrators to actively manage memory allocation by CNS.Statistics logging amp。 Event Triggers ? ? Understanding your traffic patterns and growth is paramount to efficient operations. CNS delivers the information you need to run your operations.Security managementFull DNSSEC ? ? Nominum has fully implemented DNSSEC to deliver highest DNS security.Cache Poisoning Security ? ? With CNS39。 proprietary software, security measures have been implemented to obviate cache poisoning.DoS Hardening ? ? Improved query handling and performance optimization allows CNS to handle significantly traffic loads and reduce DoS Validation and Attack Prevention ? ? Response validation eliminates DNSvectored caching attacks that rely on vulnerable resolver libraries in client applications.Security Auditing ? ? Actively logs top 10 queries to monitor for anomaliesHighavailability% Uptime ? ? Carriergrade availability to support your customers.FastStart ? ? CNS39。 optimized data structures deliver fast start up to reduce startup latencyContinuous System Operation (CSO) ? ?CNS is architected with continuous system operation in mind, constantly maintaining system and memory coherency which optimizes performance without service degradation or interruption.Stub Resolver Overflow Protection ? ? Designed to handle extreme boundary conditions, CNS is designed with stub resolver protection to maintain highavailability in hightraffic environments.Live DNS Configuration Updates ? ? Design for maximum availability, CNS configuration updated can be executed live with no service interruption or downtime.PerformanceHigh Throughput ? ? With optimized algorithms and data structures, Nominum CNS can scale to support the needs of your business.Highspeed Database ? ? Optimized data structures and database deliver highvelocity transactional database.Fast Query Logging ? ?Optimized Resolver ? ? Optimized resolver algorithms deliver rapid resolver performance to reduce latency and traffic.Support amp。 Service ?Premium Support Services ? ?24 hours support seven days a week for all your product support needs. Work with an assigned support specialist that knows you, your products, and work.Customer Support Portal ? ? Nominum’s customer support portal delivers valuable information, downloads, and updates to you in a fast and efficient manner.Product Training ? ? Experienced professionals can help train your team on Nominum39。s products and best practices.Professional Services ? ? Nominum has a significant number of DNS experts including the inventor of DNS to provide customers with best practices and custom solutions.移動 DNS 系統擴容改造項目技術建議書44附錄 B– Nominum公司全球部分用戶列表1Nominum ConfidentialIn Production at the Largest Comunication Service Providers WorldwideValidated Solution in Toug