Managing HP Serviceguard for Linux, Tenth Edition, September 2012

Contents
Printing History .......................................................................................................................16
Preface...................................................................................................................................17
1 Serviceguard for Linux at a Glance..........................................................................................19
What is Serviceguard for Linux? ..............................................................................19
Failover............................................................................................................21
Using Serviceguard Manager..................................................................................22
Monitoring Clusters with Serviceguard Manager....................................................22
Administering Clusters with Serviceguard Manager................................................22
Configuring Clusters with Serviceguard Manager...................................................23
Starting Serviceguard Manager...........................................................................23
Configuration Roadmap..........................................................................................23
2 Understanding Hardware Configurations for Serviceguard for Linux.............................................24
Redundant Cluster Components................................................................................24
Redundant Network Components ............................................................................25
Rules and Restrictions.........................................................................................25
Redundant Ethernet Configuration .......................................................................26
Cross-Subnet Configurations................................................................................27
Configuration Tasks.......................................................................................28
Restrictions...................................................................................................28
For More Information.....................................................................................29
Redundant Disk Storage..........................................................................................29
Supported Disk Interfaces ..................................................................................30
Disk Monitoring.................................................................................................30
Monitoring LVM Disks Through Generic Resources Monitoring Service......................30
Sample Disk Configurations ...............................................................................31
Redundant Power Supplies ......................................................................................31
3 Understanding Serviceguard Software Components...................................................................32
Serviceguard Architecture........................................................................................32
Serviceguard Daemons......................................................................................33
Configuration Daemon: cmclconfd..................................................................34
Cluster Daemon: cmcld..................................................................................34
Log Daemon: cmlogd....................................................................................35
Network Manager Daemon: cmnetd...............................................................35
Lock LUN Daemon: cmdisklockd.....................................................................35
Cluster Object Manager Daemon: cmomd.......................................................35
Service Assistant Daemon: cmserviced.............................................................35
Generic Resource Assistant Daemon: cmresourced............................................36
Quorum Server Daemon: qs...........................................................................36
Utility Daemon: cmlockd................................................................................36
Cluster SNMP Agent Daemon: cmsnmpd.........................................................37
Contents 3