Managing HP Serviceguard A.11.20.20 for Linux, March 2014

Contents
Printing History ..........................................................................................15
Preface......................................................................................................17
1 Serviceguard for Linux at a Glance.............................................................19
1.1 What is Serviceguard for Linux? .........................................................................................19
1.1.1 Failover.....................................................................................................................20
1.2 Using Serviceguard for Configuring in an Extended Distance Cluster Environment......................21
1.3 Using Serviceguard Manager.............................................................................................22
1.3.1 Monitoring Clusters with Serviceguard Manager............................................................22
1.3.2 Administering Clusters with Serviceguard Manager........................................................22
1.3.3 Configuring Clusters with Serviceguard Manager...........................................................22
1.3.4 Starting Serviceguard Manager...................................................................................22
1.4 Configuration Roadmap.....................................................................................................22
2 Understanding Hardware Configurations for Serviceguard for Linux................25
2.1 Redundant Cluster Components...........................................................................................25
2.2 Redundant Network Components .......................................................................................25
2.2.1 Rules and Restrictions.................................................................................................26
2.2.2 Redundant Ethernet Configuration ...............................................................................26
2.2.3 Cross-Subnet Configurations.......................................................................................27
2.2.3.1 Configuration Tasks............................................................................................27
2.2.3.2 Restrictions........................................................................................................28
2.2.3.3 For More Information..........................................................................................28
2.3 Redundant Disk Storage.....................................................................................................29
2.3.1 Supported Disk Interfaces ..........................................................................................29
2.3.1.1 Using iSCSI LUNs as Shared Storage.....................................................................29
2.3.2 Disk Monitoring........................................................................................................30
2.3.3 Sample Disk Configurations .......................................................................................30
2.4 Redundant Power Supplies ................................................................................................30
3 Understanding Serviceguard Software Components......................................33
3.1 Serviceguard Architecture...................................................................................................33
3.1.1 Serviceguard Daemons...............................................................................................33
3.1.1.1 Configuration Daemon: cmclconfd.........................................................................34
3.1.1.2 Cluster Daemon: cmcld........................................................................................34
3.1.1.3 Network Manager Daemon: cmnetd......................................................................35
3.1.1.4 Log Daemon: cmlogd...........................................................................................35
3.1.1.5 Lock LUN Daemon: cmdisklockd............................................................................35
3.1.1.6 Generic Resource Assistant Daemon: cmresourced...................................................35
3.1.1.7 Persistent Reservation Daemon: cmprd....................................................................35
3.1.1.8 Service Assistant Daemon: cmserviced...................................................................35
3.1.1.9 Quorum Server Daemon: qs.................................................................................35
3.1.1.10 Utility Daemon: cmlockd......................................................................................36
3.1.1.11 Cluster SNMP Agent Daemon: cmsnmpd...............................................................36
3.1.1.12 Cluster WBEM Agent Daemon: cmwbemd.............................................................36
3.1.1.13 Proxy Daemon: cmproxyd....................................................................................36
3.1.2 Serviceguard WBEM Provider......................................................................................37
Contents 3