Change Manager Deployment Operations

The main task performed by Change Manager is to deploy software stacks to managed hosts. Change Manager also performs remote operations on the managed hosts, such as fallback, reboot, and halt.

Change Manager supports the following deployment operations:

Initial Installation

You must perform an initial installation when a managed host is in one of the following states:

• No software is installed

• Existing software can be overwritten

• Existing software does not include the Sun Management Center agent and the Change Manager agent module

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Note –

Change Manager provides the network installation services for the managed host. You must first create custom JumpStart files for each managed host by running the Set Up for Install or changemgr setup operation.

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To initiate an initial installation, you must manually run the following command on each managed host:

ok> boot net - install

Live Update

The managed hosts are running a Change Manager-compatible software stack that was installed by Change Manager. To be Change Manager-compatible, the software stack must include the Sun Management Center agent and the Change Manager agent module. A live update (also called update) uses the Solaris Live Upgrade feature to deploy software to the inactive boot environment. Initiate an update by running the Update or changemgr update operation.

Reinstallation

This operation is similar to an initial installation because the software installed on managed hosts is overwritten, software is not deployed to another boot environment. Initiate a reinstallation by running the Reinstall or changemgr reinstall operation.

You must perform a Change Manager initial installation on a managed host before you can perform an update or reinstallation on that managed host.

To prepare a managed host for future updates, configure your managed host with two boot environments. To prepare a managed host for future reinstallation operations, configure your managed host with one boot environment. See Minimum Set of Parameters to Deploy Software.