Managing Serviceguard Nineteenth Edition, Reprinted June 2011

Distributing the Binary Cluster Configuration File with HP-UX Commands ...........................295
Configuring Cross-Subnet Failover......................................................................................295
Configuring node_name..............................................................................................296
Configuring monitored_subnet_access............................................................................296
Creating Subnet-Specific Package Control Scripts............................................................296
Control-script entries for nodeA and nodeB................................................................296
Control-script entries for nodeC and nodeD................................................................296
Reconfiguring a Package.......................................................................................................297
Migrating a Legacy Package to a Modular Package.............................................................297
Reconfiguring a Package on a Running Cluster ...................................................................297
Renaming or Replacing an External Script Used by a Running Package..............................298
Reconfiguring a Package on a Halted Cluster .....................................................................298
Adding a Package to a Running Cluster..............................................................................299
Deleting a Package from a Running Cluster ........................................................................299
Resetting the Service Restart Counter..................................................................................300
Allowable Package States During Reconfiguration ...............................................................300
Changes that Will Trigger Warnings..............................................................................305
Responding to Cluster Events .................................................................................................306
Single-Node Operation ........................................................................................................306
Disabling Serviceguard.........................................................................................................306
Removing Serviceguard from a System.....................................................................................307
8 Troubleshooting Your Cluster....................................................................308
Testing Cluster Operation ......................................................................................................308
Start the Cluster using Serviceguard Manager.....................................................................308
Testing the Package Manager ...........................................................................................308
Testing the Cluster Manager .............................................................................................308
Testing the Network Manager ..........................................................................................309
Monitoring Hardware ...........................................................................................................309
Using Event Monitoring Service..........................................................................................310
Using EMS (Event Monitoring Service) Hardware Monitors....................................................310
Hardware Monitors and Persistence Requests.......................................................................310
Using HP ISEE (HP Instant Support Enterprise Edition)............................................................310
Replacing Disks....................................................................................................................310
Replacing a Faulty Array Mechanism..................................................................................310
Replacing a Faulty Mechanism in an HA Enclosure..............................................................311
Replacing a Lock Disk.......................................................................................................311
Replacing a Lock LUN......................................................................................................312
Online Hardware Maintenance with In-line SCSI Terminator .................................................313
Replacing I/O Cards............................................................................................................313
Replacing SCSI Host Bus Adapters.....................................................................................313
Replacing LAN or Fibre Channel Cards...................................................................................314
Offline Replacement.........................................................................................................314
Online Replacement.........................................................................................................314
After Replacing the Card..................................................................................................315
Replacing a Failed Quorum Server System...............................................................................315
Troubleshooting Approaches .................................................................................................316
Reviewing Package IP Addresses .......................................................................................316
Reviewing the System Log File ...........................................................................................316
Sample System Log Entries ...........................................................................................317
Reviewing Object Manager Log Files .................................................................................317
Reviewing Serviceguard Manager Log Files ........................................................................318
Reviewing the System Multi-node Package Files....................................................................318
Reviewing Configuration Files ...........................................................................................318
Reviewing the Package Control Script ................................................................................318
Contents 13