Managing HP Serviceguard for Linux Ninth Edition, April 2009

List of Figures
1-1 Typical Cluster Configuration ....................................................................................24
1-2 Typical Cluster After Failover ....................................................................................25
1-3 Tasks in Configuring a Serviceguard Cluster ............................................................28
2-1 Redundant LANs .......................................................................................................32
2-2 Mirrored Disks Connected for High Availability ......................................................36
3-1 Serviceguard Software Components on Linux...........................................................38
3-2 Lock LUN Operation...................................................................................................46
3-3 Quorum Server Operation..........................................................................................47
3-4 Quorum Server to Cluster Distribution......................................................................47
3-5 Package Moving During Failover...............................................................................50
3-6 Before Package Switching...........................................................................................52
3-7 After Package Switching.............................................................................................53
3-8 Rotating Standby Configuration before Failover........................................................55
3-9 Rotating Standby Configuration after Failover..........................................................56
3-10 configured_node Policy Packages after Failover...................................................57
3-11 Automatic Failback Configuration before Failover....................................................58
3-12 Automatic Failback Configuration After Failover......................................................59
3-13 Automatic Failback Configuration After Restart of node1........................................60
3-14 Legacy Package Time Line Showing Important Events..............................................63
3-15 Legacy Package Time Line .........................................................................................65
3-16 Legacy Package Time Line for Halt Script Execution.................................................69
3-17 Bonded Network Interfaces........................................................................................75
3-18 Bonded NICs...............................................................................................................76
3-19 Bonded NICs After Failure.........................................................................................77
3-20 Bonded NICs Configured for Load Balancing............................................................78
3-21 Physical Disks Combined into LUNs..........................................................................84
5-1 Access Roles..............................................................................................................177
E-1 System Management Homepage with Serviceguard Manager................................327
E-2 Cluster by Type.........................................................................................................329
16 List of Figures