vcs官方培训文档

VERITASClusterServerVERITASClusterServerOverview3–2002SymantecCorporation,AllRightsReservedNICresource消除系统故障点引起的服务中断Oracle4–2002SymantecCorporation,AllRightsReserved高可用性业务系统VERITASClusterServer保护数据中心各个层面CMS_1CMS_2CMS_3CMS_4CMS_5DB2_1DB2_2Web_4Web_3Web_2Web_1Web_5交易层应用层数据库层5–第一代高可用性解决方案硬件系统软件系统两套服务器系统共享磁盘阵列子系统冗余的心跳线Crashtolerantapplication高可用软件PublicNetwork心跳线双端口共享磁盘阵列传统配置方式6–2002SymantecCorporation,AllRightsReserved第一代解决方案的问题安装、配置、管理非常复杂扩展性较差（群集内的节点数少）应用级的高可用能力相对较弱，一般是整机切换对第三方软硬件的支持能力有限没有可靠的广域高可用方案平台专用，在多平台的企业范围内部署较为复杂，同时，费用也较高。7–2002SymantecCorporation,AllRightsReserved当前集群系统的各种结构对称式切换结构TwoActiveServers•Leastcost(perceived)•Leastperformance•MostcomplexActiveActiveAppAppApp8–2002SymantecCorporation,AllRightsReserved当前集群系统的各种结构对称式切换结构TwoActiveServers•Leastcost(perceived)•Leastperformance•MostcomplexActiveActiveAppAppAppNto1切换结构NActiveServerswith1Spare•Reliesonhardwareavailability•DedicatedspareAppAppAppAppAppFailBackRequired!9–2002SymantecCorporation,AllRightsReserved当前集群系统的各种结构对称式切换结构TwoActiveServers•Leastcost(perceived)•Leastperformance•MostcomplexActiveActiveAppAppAppNto1切换结构NActiveServerswith1Spare•Reliesonhardwareavailability•DedicatedspareAppAppAppAppAppFailBackRequired!N+1切换结构–最佳方案NActiveServerswith1Spare•Leastcostforgreatestperformance•Bestpossibleconfiguration•“Roaming”spareAppAppAppAppSpareAppNewSpare10–2002SymantecCorporation,AllRightsReserved当前集群系统的各种结构对称式切换结构TwoActiveServers•Leastcost(perceived)•Leastperformance•MostcomplexActiveActiveAppAppAppNto1切换结构NActiveServerswith1Spare•Reliesonhardwareavailability•DedicatedspareAppAppAppAppAppFailBackRequired!N+1切换结构–最佳方案NActiveServerswith1Spare•Leastcostforgreatestperformance•Bestpossibleconfiguration•“Roaming”spareAppAppAppAppSpareAppNewSpareNtoN切换结构AllActiveServers–NoSpare•Requiresadvancedsupportfromcluster•ComplexAppAppAppAppAppAppAppAppAppApp•Maximumuseofhardware11–2002SymantecCorporation,AllRightsReservedVERITAS高可用产品进化图BriefHistoryofVERITASClusterServer–AxxIONH.A.(OpenVision)–VERITASFirstWatch–VERITASClusterServer–VERITASGlobalClusterManager–VERITASGlobalClusterOptionVERITASClusterServer支持广泛的服务器平台（IBM,SUN,HP,WindowsNT/2K)跨平台统一管理支持各种集群结构提供极强的扩展能力-32节点安装、配置、管理简单易用支持计划停机和非计划停机的群集强大的SAN环境支持支持广泛的应用软件采用高速GAB和LLT技术可靠的远程高可用环境支持能力VERITASClusterServer功能特点14–2002SymantecCorporation,AllRightsReserved简单的安装配置、精密可靠的控制Cluster的安装配置在一个节点上即可完成配置文件简单，只需在一个节点上配置，然后自动同步到整个群集内的所有节点服务组创建模板全局性的、精密的状态控制机制，避免误切换可靠的数据库状态监控机制15–2002SymantecCorporation,AllRightsReserved全面的功能资源的依赖关系、服务组的依赖关系灵活的资源监控及切换方法（应用监控、本地重起控制….)简单地自创建客户化AgentClusterSimulator仿真功能，让客户熟悉系统、实验配置正确性FireDrill功能让客户可以进行容灾演习16–2002SymantecCorporation,AllRightsReserved应用服务的管理多结点/多服务的集群无限制的服务组(servicegroups)服务组的切换不会造成相互影响基于策略的切换基于负荷的切换简单管理服务的启动、停止和切换-Load=AvailableCapacityCapacity300300300150OracleA:100LoadOracleB:125Load12517575+75OracleE:75Load0OracleF:75LoadOracleC:150Load25050OracleD:75LoadOracleE:75LoadOracleE:75Load15015017–2002SymantecCorporation,AllRightsReservedVCS集群管理使用一个控制台，就可以管理多个平台（OS）上的Cluster使用方便：Java管理界面或Web浏览器界面管理方便：–同时管理多个clusters,nodesandresourcegroup.所有平台上的管理界面和命令行完全相同18–2002SymantecCorporation,AllRightsReserved跨平台统一管理19–2002SymantecCorporation,AllRightsReserved集群管理*NNTPVirtualServersarenotsupportedinthisrelease20–2002SymantecCorporation,AllRightsReserved集群管理基于任务（roles-based）的安全管理方式Wizard：简化使用详细的管理操作日志logging和debugging功能支持本地和远程管理模式VERITASClusterServer部件构成22–2002SymantecCorporation,AllRightsReserved服务组ServiceGroupWin98客户机应用服务服务器共享磁盘SG-NFSSG-WebSG-OracleNodeANodeBNodeCNodeD一个应用服务跟与其相关的资源联系在一起SG-SAPSG-NBU23–2002SymantecCorporation,AllRightsReservedVCS部件构成ResourcesAgentsResourceDependenciesServiceGroupsLLTGAB24–2002SymantecCorporation,AllRightsReservedWhatisaResource?AResourceisahardwareorsoftwarecomponentbeingmanagedbyVCS.Typically,eachresourceisdefinedinVCSbyhowtostart(online),stop(offline),andmonitorit.SampleResourcesare–DiskGroups–IPAddresses–Applications25–2002SymantecCorporation,AllRightsReservedResourceTypesAllresourcesofsimilarcharacteristicsarecollectivelycalledaresourcetype26–2002SymantecCorporation,AllRightsReservedWhatisanAgent?AVCSprocessthatcontrolsresources;anagentmay:–on-lineandoff-lineresources–monitorresources–provideapplication-specificfaultmanagementAsystemhasoneagentperresourcetypethatmonitorsallresourcesofthattype;forexample,asingleIPagentmanagesallIPresources.27–2002SymantecCorporation,AllRightsReservedWhatisaResourceDependency?AResourceDependency–describesarelationshipbetweentwoVCSresources.–definestheorderinwhichresourcesarebroughtonlineandoffline.Example:–AMountresourcesmaybedependentonVolumeresource28–2002SymantecCorporation,AllRightsReservedResourceDependenciesOracleIPNICMountDiskGroupVolumeListenerIP1ORACLEWEBNocyclicdepedenciesrequiresVolumerequiresDiskGrouprequiresNICpersistentrequiresOracleandIPrequiresMount29–2002SymantecCorporation,AllRightsReservedSampleResourceDependencyGraphOracleIPNICMount2Volume1DiskGroupVolume2Mount1Listener30–2002SymantecCorporation,AllRightsReservedWhatisaServiceGroup?Aservicegroupd