Managing HP Serviceguard A.11.20.00 for Linux, June 2012

How Persistent Reservations Work........................................................................................66
Responses to Failures .............................................................................................................66
Reboot When a Node Fails ................................................................................................66
What Happens when a Node Times Out.........................................................................67
Example .................................................................................................................67
Responses to Hardware Failures ..........................................................................................68
Responses to Package and Service Failures ...........................................................................68
Responses to Package and Generic Resources Failures............................................................68
Service Restarts ............................................................................................................69
Network Communication Failure ....................................................................................69
4 Planning and Documenting an HA Cluster ..................................................70
General Planning ..................................................................................................................70
Serviceguard Memory Requirements.....................................................................................70
Planning for Expansion ......................................................................................................70
Using Serviceguard with VMware Virtual Machines....................................................................71
Cluster configuration options...............................................................................................71
Hardware Planning ................................................................................................................72
SPU Information ................................................................................................................72
LAN Information ...............................................................................................................72
Shared Storage.................................................................................................................73
FibreChannel................................................................................................................73
Multipath for Storage ....................................................................................................73
Disk I/O Information .........................................................................................................73
Hardware Configuration Worksheet ....................................................................................74
Power Supply Planning ...........................................................................................................74
Power Supply Configuration Worksheet ...............................................................................75
Cluster Lock Planning..............................................................................................................75
Cluster Lock Requirements...................................................................................................75
Planning for Expansion.......................................................................................................75
Using a Quorum Server......................................................................................................75
Quorum Server Worksheet ............................................................................................75
Volume Manager Planning ......................................................................................................76
Volume Groups and Physical Volume Worksheet....................................................................76
Cluster Configuration Planning ................................................................................................76
Heartbeat Subnet and Cluster Re-formation Time ...................................................................76
About Hostname Address Families: IPv4-Only, IPv6-Only, and Mixed Mode..............................77
What Is IPv4–only Mode?..............................................................................................77
What Is IPv6-Only Mode?..............................................................................................77
Rules and Restrictions for IPv6-Only Mode...................................................................78
Recommendations for IPv6-Only Mode........................................................................79
What Is Mixed Mode?...................................................................................................79
Rules and Restrictions for Mixed Mode........................................................................79
Cluster Configuration Parameters .........................................................................................80
Cluster Configuration: Next Step .........................................................................................92
Package Configuration Planning ..............................................................................................92
Logical Volume and File System Planning .............................................................................93
Planning for NFS-mounted File Systems.................................................................................94
Planning for Expansion.......................................................................................................95
Choosing Switching and Failover Behavior............................................................................95
Parameters for Configuring Generic Resources.......................................................................96
Configuring a Generic Resource..........................................................................................97
Getting and Setting the Status/Value of a Simple/Extended Generic Resource......................99
Using Serviceguard Command to Get the Status/Value of a Simple/Extended Generic
Resource.................................................................................................................99
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