HP Serviceguard manual Contents

Cluster Object Manager Daemon: cmomd	42
Cluster SNMP Agent Daemon: cmsnmpd	42
Generic Resource Assistant Daemon: cmresourced	42
Service Assistant Daemon: cmserviced	43
Quorum Server Daemon: qs	43
Network Manager Daemon: cmnetd	43
Lock LUN Daemon: cmdisklockd	43
Utility Daemon: cmlockd	43
Cluster WBEM Agent Daemon: cmwbemd	43
Proxy Daemon: cmproxyd	44
CFS Components	44
How the Cluster Manager Works	44
Configuring the Cluster	44
Heartbeat Messages	45
Manual Startup of Entire Cluster	45
Automatic Cluster Startup	46
Dynamic Cluster Re-formation	46
Cluster Quorum to Prevent Split-Brain Syndrome	46
Cluster Lock	46
Lock Requirements	47
Use of a Lock LUN or LVM Lock Disk as the Cluster Lock	47
Single Lock Disk or LUN	48
Dual Lock Disk	48
Use of the Quorum Server as the Cluster Lock	48
No Cluster Lock	49
What Happens when You Change the Quorum Configuration Online	49
How the Package Manager Works	50
Package Types	50
Non-failover Packages	50
Failover Packages	50
Configuring Failover Packages	51
Deciding When and Where to Run and Halt Failover Packages	51
Failover Packages’ Switching Behavior	51
Failover Policy	53
Automatic Rotating Standby	53
Failback Policy	55
Using Older Package Configuration Files	57
Using the Generic Resources Monitoring Service	57
Using the Event Monitoring Service	59
Using the EMS HA Monitors	59
How Packages Run	60
What Makes a Package Run?	60
Before the Control Script Starts	61
During Run Script Execution	62
Normal and Abnormal Exits from the Run Script	63
Service Startup with cmrunserv	63
While Services are Running	63
When a Service, Subnet, or Monitored Resource Fails, or a Dependency is Not Met	64
When a Package is Halted with a Command	64
During Halt Script Execution	64
Normal and Abnormal Exits from the Halt Script	66
Package Control Script Error and Exit Conditions	66
How the Network Manager Works	67
Stationary and Relocatable IP Addresses	67
Types of IP Addresses	68

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