In ATG Content Administration, a target site is a logical grouping of one or more servers that serve the same content. When you deploy assets, you deploy them to a specified target site. The following diagram illustrates a single target site in a production environment:
This diagram shows deployment of several projects to a single target site in a production environment. A production or staging environment can include one or several target sites (see Identify Deployment Target Sites). When you deploy projects to a site, every server in the site is updated with the asset versions from those projects. The diagram shows both server clusters in the site being updated by a deployment that is in progress.
Note: In the context of ATG Content Administration deployment, the term target site or site denotes a logical grouping of one or more servers where processes are deployed. In this sense, your staging and production environments can include one site or several sites. However, an ATG Content Administration server or multi-server ATG Content Administration environment cannot be used to manage the assets for multiple Web sites—for example, www.mywebsite1.com and www.mywebsite2.com.
Target site servers run one of the following agents:
Publishing Agent on the ATG servers
Publishing Web Agent on the Web servers
Publishing Agent
The Publishing agent is a service that runs on a target site’s ATG servers and manages deployment of repository and file assets on them. The Publishing agent performs database caching and switch deployment operations on the target. It also maintains status information about the currently live datastore for switch deployments, the deployment state, and the deployed snapshot.
The Publishing agent includes a virtual file system (VFS) that is configured out-of-the-box to facilitate deployment of file assets to the ATG server, including scenarios, targeters, content and profile groups, segments, and slots. Like the corresponding VFS on the ATG Content Administration server, this VFS is located in Nucleus at:
/atg/epub/file/ConfigFileSystem
For more detail, see Repositories.
The Publishing agent is installed with the ATG Adaptive Scenario Engine.
Publishing Web Agent
The Publishing Web agent is a service that runs on target site’s Web servers, and manages deployment of file assets on them. It includes a virtual file system (VFS) that is configured by default to facilitate deployment of Web content (static text and binary files) to the Web server. Like the corresponding VFS on the ATG Content Administration server, this VFS is located in Nucleus at:
/atg/epub/file/WWWFileSystem
For more detail, see Repositories.
The Publishing Web agent must be installed manually.
The diagram in the earlier Overview section shows a single target site; however, your configuration can include multiple sites. Furthermore, each site can include multiple server clusters.
