HP Serviceguard manual Examples of Cluster and Package States, Failover and Failback Policies

Failover and Failback Policies

Failover packages can be configured with one of two values for the failover_policy parameter (page 237), as displayed in the output of cmviewcl -v:

•configured_node. The package fails over to the next node in the node_name list in the package configuration file (page 235).

•min_package_node. The package fails over to the node in the cluster that has the fewest running packages.

Failover packages can also be configured with one of two values for the failback_policy parameter (page 238), and these are also displayed in the output of cmviewcl -v:

•automatic: Following a failover, a package returns to its primary node when the primary node becomes available again.

•manual: Following a failover, a package will run on the adoptive node until moved back to its original node by a system administrator.

Examples of Cluster and Package States

The following sample output from the cmviewcl -vcommand shows status for the cluster in the sample configuration.

Normal Running Status

Everything is running normally; both nodes in the cluster are running, and the packages are in their primary locations.

CLUSTER	STATUS
example	up
NODE	STATUS	STATE
ftsys9	up	running

Network_Parameters:
INTERFACE	STATUS	PATH	NAME
PRIMARY	up	56/36.1	lan0
STANDBY	up	60/6	lan1
PACKAGE	STATUS	STATE	AUTO_RUN	NODE
pkg1	up	running	enabled	ftsys9

Policy_Parameters:

POLICY_NAME CONFIGURED_VALUE

Failover configured_node

Failback manual

Script_Parameters:
ITEM	STATUS	MAX_RESTARTS	RESTARTS	NAME
Service	up	0	0	service1
Service	up	0	0	sfm_disk_monitor
Subnet	up	0	0	15.13.168.0
Generic Resource	up			sfm_disk

Node_Switching_Parameters:
NODE_TYPE		STATUS	SWITCHING	NAME
Primary		up	enabled	ftsys9	(current)
Alternate		up	enabled	ftsys10
NODE	STATUS	STATE
ftsys10	up	running
Network_Parameters:
INTERFACE	STATUS	PATH	NAME
PRIMARY	up	28.1	lan0
STANDBY	up	32.1	lan1
PACKAGE	STATUS	STATE	AUTO_RUN	NODE
pkg2	up	running	enabled	ftsys10

Reviewing Cluster and Package Status 265