Managing HP Serviceguard for Linux Ninth Edition, April 2009

Table of Contents
Printing History ...........................................................................................................................19
Preface.......................................................................................................................................21
1 Serviceguard for Linux at a Glance............................................................................................23
What is Serviceguard for Linux? .......................................................................................23
Failover..........................................................................................................................25
Using Serviceguard Manager.............................................................................................26
Monitoring Clusters with Serviceguard Manager........................................................26
Administering Clusters with Serviceguard Manager...................................................27
Configuring Clusters with Serviceguard Manager.......................................................27
Starting Serviceguard Manager.....................................................................................27
Configuration Roadmap.....................................................................................................27
2 Understanding Hardware Configurations for Serviceguard for Linux...............................................29
Redundant Cluster Components........................................................................................29
Redundant Network Components ....................................................................................30
Rules and Restrictions...................................................................................................30
Redundant Ethernet Configuration .............................................................................31
Cross-Subnet Configurations........................................................................................32
Configuration Tasks.................................................................................................33
Restrictions...............................................................................................................33
For More Information..............................................................................................34
Redundant Disk Storage.....................................................................................................34
Supported Disk Interfaces ............................................................................................35
Disk Monitoring............................................................................................................35
Sample Disk Configurations ........................................................................................35
Redundant Power Supplies ...............................................................................................36
3 Understanding Serviceguard Software Components.....................................................................37
Serviceguard Architecture..................................................................................................37
Serviceguard Daemons.................................................................................................38
Configuration Daemon: cmclconfd..........................................................................39
Cluster Daemon: cmcld............................................................................................39
Log Daemon: cmlogd...............................................................................................40
Network Manager Daemon: cmnetd.......................................................................40
Lock LUN Daemon: cmdisklockd............................................................................40
Cluster Object Manager Daemon: cmomd..............................................................40
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