6.3
Table Of Contents
- Administrator Guide
- Contents
- About This Book
- Getting Started
- Introduction
- Configuring vCenter Server Heartbeat
- Server Configuration Wizard
- Configuring the Machine Identity
- Configuring the Server Role
- Configuring the Client Connection Port
- Configuring Channel Routing
- Configuring the Default Channel Port
- Configuring Low Bandwidth Module
- Configuring Public IP Addressing
- Configuring for Identical Nodes
- Configuring for Non-Identical Nodes
- Managing vCenter Server Heartbeat License Keys
- Configuring Message Queue Logs
- Configuring the Maximum Disk Usage
- System Administration and Management
- Server Protection
- Network Protection
- Application Protection
- Status and Control
- vCenter Server Heartbeat Console
- About vCenter Server Heartbeat Console
- Work with Groups and Pairs
- Add, Edit, Move, and Remove Pairs in VCenter Server Heartbeat Groups
- Review the Status of vCenter Server Heartbeat Groups and Pairs
- Exit vCenter Server Heartbeat Console
- Shut Down Windows Without Stopping vCenter Server Heartbeat
- Performance Protection
- Data Protection
- Data Protection Overview
- Other Administrative Tasks
- Troubleshooting
- Troubleshooting Unexpected Behaviors
- Two Active Servers
- Two Passive Servers
- Synchronization Failures
- Registry Status is Out of Sync
- Channel Drops
- Subnet or Routing Issues
- MaxDiskUsage Errors
- MaxDiskUsage Error Messages
- [L9]Exceeded the Maximum Disk Usage (VCChannelExceededMaxDiskUsageException)
- [L9]Exceeded the Maximum Disk Usage on the ACTIVE Server
- [L9]Exceeded the Maximum Disk Usage on the PASSIVE Server
- [L20]Out of Disk Space (VCChannelOutOfDiskSpaceException)
- Application Slowdown
- Poor Application Performance
- Both Servers Can Accommodate the Initial Load but the Load Has Increased
- One Server Can Provide Adequate Resource Support, but the Other Cannot
- Scheduled Resource Intensive Tasks
- Glossary
Reference Guide
66 VMware, Inc.
Causes
Themostcommoncausesoftwoactiveservers(Split‐brainsyndrome)areasfollows:
LossoftheVMwareChannelconnection(mostcommoninaWANenvironment)
Theactiveserveristoobusytorespondtoheartbeats
IncorrectconfigurationofthevCenterServerHeartbeatsoftware
YoumustdeterminethecauseoftheSplit‐brainsyndromeandresolvetheissuetopreventthisconditionfrom
recurring.
Resolution
ToresolveSplit‐brainsyndrome,identifytheserverwiththemostup‐to‐datedata.Ifyouidentifythewrong
serveryourisklosingdata.Youmustreinstatethecorrectserver.
To identify the server with the most up-to-date data
1Checkthedateandtimeoffilesonbothservers.Makethemostup‐to‐dateservertheactiveserver.
2FromaclientPConaLAN,runnbtstat -A 192.168.1.1wheretheIPaddressisthePrincipal(Public)
IPaddressoftheserver.ThiscanhelpidentifytheMACaddressoftheservercurrentlyvisibletoclient
machines.
To resolve two active servers (Split-brain syndrome)
1Identifytheserverwiththemostup‐to‐datedataortheserverto
makeactive.
2ShutdownvCenterServerHeartbeatonbothservers(ifrunning).
3Ontheservertomakepassive,right‐clicktheTaskbaricon,andselecttheServerConfigurationwizard.
4ClicktheMachinetabandsettheserverroletopassive.Donotchangetheidentityoftheserver(Primary
or
Secondary).
5ClickFinish.
6Restartthisserver.
7StartvCenterServerHeartbeat,ifrequired,andcheckthattheTaskbariconnowreflectsthechangesby
showingP/‐(PrimaryandPassive)orS/‐(SecondaryandPassive).
8Ontheactiveserver,right‐clicktheTaskbariconandselecttheServerConfiguration
wizard.
9ClicktheMachinetabandverifythattheserverroleissettoactive.Donotchangetheidentityofthe
server(PrimaryorSecondary).
10 ClickFinish.
11 Restartthisserver.Astheserverrestarts,itconnectstothepassiveserverandstartsreplication.Theactive
serveroverwritesdataonthe
passiveserver.
12 StartvCenterServerHeartbeat,ifrequired,andcheckthattheTaskbariconnowreflectsthechangesby
showingP/A(Primaryandactive)orS/A(Secondaryandactive).
13 StartvCenterServerHeartbeatConsole.
14 Checkthattheservershaveconnectedandreplicationhasstarted.
NOTEIfbothactiveserverswereservicingclients,perhapsatdifferentWANlocations,youcanmake
onlyoneserveractive.BothserverscontainrecentdatathatcannotbemergedusingvCenterServer
Heartbeat.Torestartreplication,makeoneserveractiveandoneserverpassive.Whenreplicationrestarts,
theactiveserveroverwrites
alldataonthepassiveserver.Youcanmanuallyextracttheup‐to‐datedata
fromthepassiveserverpriortorestartingreplication.ConsulttheMicrosoftknowledgebasefor
informationonvarioustoolsforthispurpose.Forfurtherinformation,contactyourVMwaresupport
representative.