实例介绍
【实例简介】
【实例截图】
【核心代码】
INTRODUCTION AND ACKNOWLEDGEMENTS...........................................9 FOREWORD ..........................................................................................................11 HIGH AVAILABILITY ........................................................................................ 15 INTRO TO VSPHERE HIGH AVAILABILITY ................................................ 17 vSphere 6.7 .................................................................................................................................20 COMPONENTS OF HA ......................................................................................25 HOSTD Agent............................................................................................................................. 27 vCenter .........................................................................................................................................28 FUNDAMENTAL CONCEPTS .......................................................................... 31 Master Agent ............................................................................................................................. 32 Slaves............................................................................................................................................ 35 Heartbeating ..............................................................................................................................39 Network Heartbeati Why Do You Need VM/Application Monitoring? ..................................................... 146 How Does VM/App Monitoring Work? ......................................................................... 147 VM Monitoring Implementation Details ..................................................................... 149 Application Monitoring........................................................................................................150 VSPHERE HA INTEROPERABILITY.............................................................155 HA and Storage DRS..............................................................................................................155 Storage vMotion and HA .....................................................................................................155 HA and DRS...............................................................................................................................156 DPM and HA..............................................................................................................................159 Proactive HA............................................................................................................................ 160 ADVANCED SETTINGS .................................................................................. 165 How Do You Configure these Advanced Settings? ..................................................165 Most Commonly Used..........................................................................................................166 VSPHERE DISTRIBUTED RESOURCE SCHEDULER............................... 169 INTRODUCTION TO VSPHERE DRS.............................................................171 Requirements...........................................................................................................................172 Cluster Level Resource Management............................................................................173 DRS Cluster Settings ............................................................................................................ 174 DRS Automation Levels.......................................................................................................176 Initial Placement ................................................................................................................... 180 vCenter Sizing..........................................................................................................................182 Supporting Technology........................................................................................................187 vMotion.......................................................................................................................................187 Conclusion.................................................................................................................................196 RESOURCE DISTRIBUTION........................................................................... 197 DRS Dynamic Entitlement..................................................................................................197 Resource Scheduler Architecture ...................................................................................198 Dynamic Entitlement Target............................................................................................202 Resource Contention ...........................................................................................................205 Resource Allocation Settings ...........................................................................................206 Reservation ..............................................................................................................................207 Shares.......................................................................................................................................... 211 Limits...........................................................................................................................................221 Tying it All Together ............................................................................................................222 RESOURCE POOLS AND CONTROLS..........................................................223 Root Resource Pool...............................................................................................................223 Resource Pools........................................................................................................................225 Resource Pool Resource Allocation Settings.............................................................230 Shares .........................................................................................................................................230 The Resource Pool Priority-Pie Paradox......................................................................239 Resource Pool-Level Reservation...................................................................................246 Expandable Reservation.....................................................................................................254 Resource Pool Limit..............................................................................................................259 CALCULATING DRS RECOMMENDATIONS .............................................261 When is DRS Invoked?......................................................................................................... 261 Recommendation Calculation.........................................................................................262 Imbalance Calculation.........................................................................................................262 Network Aware DRS .............................................................................................................275 IMPACTING DRS RECOMMENDATIONS .................................................. 279 DRS Additional Options ......................................................................................................279 VM Distribution ......................................................................................................................280 Memory Balancing in Non-Overcommitted Clusters............................................ 281 CPU Over-Commitment (DRS Additional Option)...................................................287 AggressiveCPUActive..........................................................................................................290 VM Size and Initial Placement......................................................................................... 291 MaxMovesPerHost................................................................................................................292 Placement Rules ....................................................................................................................294 VM Overrides...........................................................................................................................302 The Impact of DRS Automation Levels on Cluster Load Balance.....................304 DISTRIBUTED POWER MANAGEMENT.................................................... 307 Calculating DPM Recommendations............................................................................ 310 Power-Off Recommendations...........................................................................................315 Recommendation Classifications ..................................................................................322 Guiding DPM Recommendations ...................................................................................324 VSPHERE STORAGE DRS ............................................................................. 327 INTRODUCTION TO VSPHERE STORAGE DRS....................................... 329 Resource Aggregation .........................................................................................................330 Initial Placement....................................................................................................................330 Load Balancing ....................................................................................................................... 331 Affinity Rules...........................................................................................................................333 Datastore Maintenance Mode ..........................................................................................334 Requirements ..........................................................................................................................334 STORAGE DRS INITIAL PLACEMENT........................................................335 STORAGE DRS LOAD BALANCING .............................................................353 Space Load Balancing .........................................................................................................354 I/O Load Balancing................................................................................................................359 Load Balancing Recommendations ..............................................................................368 Invocation Triggers...............................................................................................................370 Recommendation Calculation.........................................................................................372 DATASTORE CLUSTER CONFIGURATION ...............................................375 Creating a Datastore Cluster.............................................................................................376 ARCHITECTURE AND DESIGN OF DATASTORE CLUSTERS...............387 Connectivity ............................................................................................................................387 Datastores.................................................................................................................................396 VM Configuration..................................................................................................................397 Disk Types ................................................................................................................................402 VM Automation Level..........................................................................................................407 Interoperability.......................................................................................................................407 Storage DRS Integration with Storage Profiles......................................................... 412 AFFINITY RULES............................................................................................. 421 Storage DRS Rules.................................................................................................................422 Violate Anti-Affinity Rules................................................................................................427 DATASTORE MAINTENANCE MODE......................................................... 431 Automation Mode.................................................................................................................. 431 QUALITY CONTROL........................................................................................439 STORAGE I/O CONTROL ................................................................................441 SIOC Explained.......................................................................................................................445 Storage Fairness ....................................................................................................................445 Latency Threshold Computations..................................................................................447 I/O Injector................................................................................................................................448 Queue Depth .............................................................................................................................451 SIOC Logging ...........................................................................................................................454 Communication Mechanism ...........................................................................................455 Local Scheduler......................................................................................................................457 Datastore-Wide Scheduler.................................................................................................459 VAIO ............................................................................................................................................463 Statistics Collection Only...................................................................................................467 Storage I/O Allocation .........................................................................................................469 Shares.........................................................................................................................................469 Limits and Reservations.....................................................................................................470 Interoperability.......................................................................................................................472 NETWORK I/O CONTROL.............................................................................. 475 Network I/O Control Constructs......................................................................................476 Evolution of NIOC ..................................................................................................................478 NIOC Defaults ..........................................................................................................................480 Bursty Network Consumers..............................................................................................482 Bandwidth Allocation..........................................................................................................483 Shares .........................................................................................................................................483 Ingress and Egress Perspective.......................................................................................486 Limits ..........................................................................................................................................486 Destination Traffic Saturation.........................................................................................489 Reservations ............................................................................................................................493 Network Resource Pools.....................................................................................................495 Individual VM Parameters.................................................................................................499 Bandwidth Management.................................................................................................... 501 Traffic Marking.......................................................................................................................502 STRETCHED CLUSTERS ................................................................................505 USE CASE: STRETCHED CLUSTERS.......................................................... 507 Scenario .....................................................................................................................................507 Technical Requirements and Constraints..................................................................508 Uniform Versus Non-Uniform vMSC Configurations............................................ 510 Infrastructure Architecture................................................................................................513 vSphere Configuration ........................................................................................................ 516 vSphere HA............................................................................................................................... 516 DRS...............................................................................................................................................533 Storage DRS..............................................................................................................................540 Failure Scenarios...................................................................................................................543 Summary...................................................................................................................................562 INDEX..................................................................................................................563
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