Cluster Server 8.0 Bundled Agents Reference Guide - Windows
- Introducing VCS bundled agents
- Storage agents
- Network agents
- FileShare agents
- Services and applications agents
- VCS infrastructure and support agents
- VCS hardware replication agent for NetApp
- Troubleshooting bundled agents
Resources and their attributes
Resources are the key parts of a system and are known by their type, such as a disk, a volume, or an IP address. Resource types are defined in the types.cf file by a collection of attributes. The VCS configuration file, main.cf, contains the values for the resource attributes and has an include directive to the types.cf file.
There are three categories of resources: On-Off, On-Only, and Persistent. The category of a resource governs the functions that the corresponding agent performs. For example, if the resources of an agent are of type On-Off, the agent could online and offline the resources. If the resources of an agent are of type On-Only, the agent could online the resources but cannot offline them. For persistent resources, the agent can neither online nor offline a resource.
An attribute's given value configures the resource to function in a specific way. By modifying the value of a resource attribute, you can change the way the VCS agent manages the resource. For example, the IP agent monitors an IP address resource. The specific address to be monitored is identified by the attribute Address whose value is the specific IP address.