NSX ALB全局负载均衡解决方案

1、NSX ALB 全局负载均衡解决方案AVI Networks GSLBAVI全局负载均衡简介2GSLB 全局负载均衡能干什么DNS-based load balancing across datacenters and cloudsGSLB Use Cases:1.Higher availability using active-active deployment2.Disaster recovery to offer resilience due to datacentre outages3.Geo-based load balancing For optimal performance,

2、localized content4.Cloud bursting across datacenters and public cloud.5.Multi-cluster / multi-site Kubernetes GSLBAvi GSLBIntranet UserInternetW W WD N SAvi DNS2Datacenter 2Public CloudAvi DNS3AppA A3LB-3Avi DNS1Datacenter 1AppA A2LB-2AppA A1LB-13Avi GSLB实现原理Avi GSLBD N SOn-Prem DC 3AWS Cloud DC 2Av

3、i DNS1On-prem DC 1Client tries to accesshttps:/appA.Request can go to one of theDNS33 AvLietDNSsAsvaeisrDsvNuiSmc1e swroeuqludescthoose themostAviDgNoSe1s otropAtAvivimiDaNlDSN2aSp1oprliAcvaition instance outTDhNeS IqPueaCrdlydirecenostmsesoefntdoLsBt-th3heeis urbesteuqrunendt tHoTTPtlhoecacl/iceron

4、ertqpuoersatse tDoNSLBs-e3rvdeirrectly.htotfpst:h/e/atphprAe.eacimnes.tcaonmces of App A which is the LB-3 instanceAvi GSLB provides:1.Comprehensive features and capabilities2.Real time health monitoring3.Operational benefitsAvi DNS3Avi DNS2AppA A1LB-1AppA A3LB-3AppA A2LB-24完整的功能集With automation acr

5、oss heterogeneous infrastructureGlobal Server Load BalancingAlgorithmsReal time health monitoringPlatform and AnalyticsControl plane HMData plane HMHTTP, HTTPS, TCP, UDP, Ping, and custom external monitorsHM ProxyHM Sharding5Central provisioning of sites100 % REST API/SDKSelf-ServiceMulti tenancyand

6、 RBACRequest LoggingPublic/Private IP support3rd-party load balancer supportEDNS complianceIPv6 supportGSLB site Cookie persistenceAdaptive replication policyCustom site selectionDNS PoliciesRound robin, Consistenthash,Geolocation,Priority, and Topology algorithmsNested algorithm supportGeo Based pr

7、oximityAVIGSLB的使用场景6App A1LB-SEAvi DNS1Active SiteApp A2LB-SEAvi DNS2Disaster Recovery SiteApplications are deployed in two data centresWhile both are healthy, all traffic is directed to the primary DCIf App-A1 fails, Avi will redirect traffic to App-A2If the primary DC fails, the global DNS directs

8、 all user traffic to the otherAlgorithm used:PriorityDisaster recovery and business continuity7https:/appA.https:/appA.C o r p D N SApp A2LB-SEAvi DNS2Follower Site1: on-premApp A3Avi DNS3Follower Site2: AWSHigh availability across data center failuresPerformance gainsPerform non-disruptive migratio

9、nA/B TestingGeo mappingAlgorithms supported:Round robinWeighted round robinConsistent hashGeo-basedTopologyActive-Active DeploymentApp behind Avi VSThird-party appApp A1LB-SEAvi DNS1Leader Site: on-prem C o r p D N S8DNS SE calculates the distance and choses the app instance with the shortest distan

10、ceStatic ProximityOptimised user experienceDelivering localized contentSatisfying regulatory and security requirementsDatabases Supported:Avi in-built DBOther Maxmind DBCustom DBDirects requests to the optimal site based on the longitude and latitude of the client and GSLB sitesGeo-based load balanc

11、ingCA, USAUKINDIAApp A2LB-SEAvi DNS2Follower Site1: on-premApp A3Avi DNS3Follower Site2: AWSApp A1LB-SEAvi DNS1Leader Site: on-premC o r p D N S9Applications are deployed across private / public cloudsApplication is primarily delivered via an on-prem environmentUnder unusually high request load, Avi

12、 GSLB can start sending the traffic to the public cloud and autoscalesHybrid Cloud With Cloud BurstingDatacenter 1 Public/Private CloudRESTAPIBurst to Cloud as requiredService EnginesService EnginesCentralized Monitoring and Management10Provision to Cloud as requiredClient DNS requests coming in fro

13、m within the intranet have the private IP served in the A recordRequests from outside are served the public IP addressData path health monitoring is performed against the private IP addressNAT aware Public/Private IP GSLBhttps:/appA.Public IPExternal UsersAvi GSLBPublic IP11Private IPhttps:/appA.W W

14、 WC o r p D N SIntranet UsersPublic IPPrivate IPApplicationlocal load balancing is performed by external sites/appliancesDNS processing is done by Avi DNSData-path health monitoring can be applied to 3rd party membersControl plane HM not applicableLoad monitoring, visibility not applicableGSLB Across Third-Party SitesEasy management of tasks such as site maintenanceApp A1LB-SEAvi DNS1Avi GSLB Site1App A2LB-SEAvi DNS2Avi GSLB Site2Net