HP Serviceguard manual Managing Packages and Services, Starting a Package, Cmrunnode node1

NOTE: If you do not do this, the cmhaltcl in the next step will fail.

3.Halt the cluster with the -d(detach) option: cmhaltcl -d

NOTE: -dand -fare mutually exclusive. See cmhaltcl (1m) for more information.

To re-attach the packages, restart cluster:

cmrunnode node1

Example: Halting the Cluster for Maintenance on the Heartbeat Subnets

Suppose that you need to do networking maintenance that will disrupt all the cluster's heartbeat subnets, but it is essential that the packages continue to run while you do it. In this example we'll assume that packages pkg1 through pkg5 are unsupported for Live Application Detach, and pkg6 through pkgn are supported.

Proceed as follows:

1.Halt all the unsupported packages: cmhaltpkg pkg1 pkg2 pkg3 pkg4 pkg5

2.Halt the cluster, detaching the remaining packages: cmhaltcl -d

3.Upgrade the heartbeat networks as needed.

4.Restart the cluster, automatically re-attaching pkg6 through pkgn and starting any other packages that have auto_run (page 235) set to yes in their package configuration file:

cmruncl

5.Start the remaining packages; for example cmmodpkg -e pkg1 pkg2 pkg3 pkg4 pkg5

Managing Packages and Services

Managing packages and services involves the following tasks:

•Starting a package

•Halting a package

•Moving a package (halt, then start)

•Changing package switching behavior

•Maintaining a package using maintenance mode

Non-root users with the appropriate privileges can perform these tasks. See “Controlling Access to the Cluster” (page 192) for information about configuring access.

You can use Serviceguard Manager or the Serviceguard command line to perform these tasks.

Starting a Package

Ordinarily, when a cluster starts up, the packages configured as part of the cluster will start up on their configured nodes. You may need to start a package manually after it has been halted manually. You can do this either in Serviceguard Manager or on the Serviceguard command line.

If any package has a configured dependency on another package, Serviceguard will start them in order, ensuring that a package will not start until its dependency is met.

You can use Serviceguard Manager, or Serviceguard commands as shown below, to start a package.

284 Cluster and Package Maintenance