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Quiescing a node with slow drain


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On a high availability system, you can remove a node from a pool of active nodes by quiescing the node from a landing page. The slow drain method requires removing the nodes from the load balancer before starting the quiesce process. The default quiesce method is immediate drain.

To quiesce a node by using the landing page, do the following steps:

  1. Identify the Pega Platform node or nodes that you want to quiesce.

  2. Configure the load balancer to disable the identified nodes. See your load balancer documentation for specific configuration instructions. Currently active users and services can complete their work, but no new connections can be made.

  3. Do either of the following:

    • In Admin Studio, click System System & nodes .
    • In Dev Studio, click Configure System High Availability HA Cluster Management .
  4. Select the check box in front of the node or nodes that you want to quiesce.

  5. Click Quiesce. When the quiesce process is complete, the status of the node changes to Quiesce Complete in the Runstate or State column on the landing page.

    To cancel the quiesce process for the selected node or nodes, click Cancel Quiesce.

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