Deploying Node Agents

You configure and deploy your node agents in one of two ways:

Before Deploying Node Agents

Before you deploy node agents:

  1. Install the Domain Administration Server.
  2. Start the Domain Administration Server.

Once the Domain Administration Server is up and running, begin either online or offline deployment.

Online Deployment

To configure the domain if you know the topology and have the hardware for your domain before you start configuring it, use online deployment.

To configure online deployment:

  1. Install a node agent on every machine that will host a server instance.
  2. Use the installer or the asadmin command create-node-agent. If a machine requires more than one node agent, use the asadmin command create-node-agent to create them.

    See "Creating a Node Agent" for more information.

  3. Start the node agents using the asadmin command start-node-agent.
  4. When started, a node agent communicates with the Domain Administration Server (DAS). When it reaches the DAS, a configuration for the node agent is created on the DAS. Once the configuration exists, the node agent is viewable in the Admin Console.

    See "Starting a Node Agent" for more information.

  5. Configure the domain, including creating server instances and clusters and deploying applications.

Offline Deployment

The offline approach lets you easily define and rearrange items in the domain before configuring the individual local machines.

To configure the domain and server instances before setting up node agents on local machines (offline configuration):

  1. Create placeholder node agents in the Domain Administration Server.
  2. See "Creating a Node Agent Placeholder" for more information.

  3. Create server instances and clusters, and deploy applications.
  4. Install a node agent on every machine that will host a server instance.
  5. Use the installer or the asadmin command create-node-agent. The node agents must have the same names as the placeholder node agents previously created.

    See "Creating a Node Agent" for more information.

  6. Start the node agents using the asadmin command start-node-agent.
  7. When a node agent is started, it binds to the Domain Administration Server and creates any server instances previously associated with the node agent.

    See "Starting a Node Agent" for more information.

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