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8.3. Assigning Web Applications to a Server Group

Assigning web applications to different groups manually allows administrators to control the lifecycle for applications, as expanded in Section 8.4, “Extended Example: Assigning Web Applications and Managing Updates”. The same content is used in different operating environments.

Note

Web applications can be deployed directly to a server group, much like the process to deploying it to a domain, in Section 8.2, “Deploying Web Applications to a Domain”.
The deployment path for a domain is to upload the content to the domain controller and then to distribute that content to a server group. Creating a deployment on a server group follows the same process; it deploys it to the domain and then sends it to the server group. It just provides a shortcut.
If the content already exists on the domain controller, then the content must be deployed through the domain controller operation described here.
Deploying the content to a domain first uses the domain as a kind of repository. From the domain, the same package can be deployed to multiple groups. Additionally, deploying to a domain allows administrators to deploy multiple packages in the same operation to a group, either simultaneously or in a specified order. This can help control content streams to servers.

Important

Newly-deployed content for a server group may not show up in the JBoss ON inventory for as long as 24 hours, even if it was successfully created. By default, discovery scans for services are only made every 24 hours. To see the new content-backed resource, run the agent's discovery scan and manually discover it.

Note

The deployment is created in the domain as a child resource, then assigned to a server group as an operation, and finally updated through the domain's Content tab.
  1. Click the Inventory tab in the top menu.
  2. Select Servers - Top Level Imports in the Resources menu table on the left. Select the JBoss EAP 6 domain controller.
  3. Expand the DomainDeployments folder.
    To deploy all web applications in the deployments folder, select the deployments folder itself to run the operation.
    To deploy a single web application, select the specific web application.
  4. Open the Operations tab for the server.
  5. Click the New button at the bottom of the page.
  6. Select the Assign to Server-Group option from the drop-down menu.
  7. Select which group (or all groups) to deploy the application to.
  8. Enter the standard information for operations, like the schedule for when to run the operation and the timeout period.

    Note

    The timeout period sets how long the server waits before assuming that the operation has timed out and failed. This does not necessarily mean that the operation has failed or stopped running; it could complete successfully past the time out period.
  9. If there are multiple web applications being deployed, then set the Execute radio button to the way set the order that the packages are deployed. All packages can be deployed at once, or they can be deployed in a specific order.
  10. Click the Schedule button.
  11. Optionally, run a discovery scan on the agent to discover the new content resource. By default, discovery scans for services are only made every 24 hours, so there could be a long delay in discovering new content.
    1. Open the agent entry in the UI.
    2. Open the Operations tab, and select the execute prompt command operation.
    3. Enter the discovery command as an operation rgument. This runs a discovery scan.
    4. Click the Schedule button.
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