HP Serviceguard Configuring a Package Next Steps, Configuring nodename, Configuring ipsubnetnode

Configuring node_name

First you need to make sure that pkg1 will fail over to a node on another subnet only if it has to. For example, if it is running on NodeA and needs to fail over, you want it to try NodeB, on the same subnet, before incurring the cross-subnet overhead of failing over to NodeC or NodeD.

Assuming nodeA is pkg1’s primary node (where it normally starts), create node_name entries in the package configuration file as follows:

node_name nodeA

node_name nodeB

node_name nodeC

node_name nodeD

Configuring monitored_subnet_access

In order to monitor subnet 15.244.65.0 or 15.244.56.0, depending on where pkg1 is running, you would configure monitored_subnet and monitored_subnet_access in pkg1’s package configuration file as follows:

monitored_subnet 15.244.65.0 monitored_subnet_access PARTIAL monitored_subnet 15.244.56.0 monitored_subnet_access PARTIAL

NOTE: Configuring monitored_subnet_access as FULL (or not configuring monitored_subnet_access) for either of these subnets will cause the package configuration to fail, because neither subnet is available on all the nodes.

Configuring ip_subnet_node

Now you need to specify which subnet is configured on which nodes. In our example, you would do this by means of entries such as the following in the package configuration file:

ip_subnet 15.244.65.0 ip_subnet_node nodeA ip_subnet_node nodeB ip_address 15.244.65.82 ip_address 15.244.65.83 ip_subnet 15.244.56.0 ip_subnet_node nodeC ip_subnet_node nodeD ip_address 15.244.56.100 ip_address 15.244.56.101

Configuring a Package: Next Steps

When you are ready to start configuring a package, proceed to Chapter 6: “Configuring Packages and Their Services ” (page 227); start with “Choosing Package Modules” (page 228). (If you find it helpful, you can assemble your package configuration data ahead of time on a separate worksheet for each package; blank worksheets are in Appendix E.)

156 Planning and Documenting an HA Cluster