Chapter 12. Configuring node agent load concurrency


You can control the maximum number of node agent operations that can run simultaneously on each node within your cluster.

You can configure it using one of the following fields of the Data Protection Application (DPA):

  • globalConfig: Defines a default concurrency limit for the node agent across all nodes.
  • perNodeConfig: Specifies different concurrency limits for specific nodes based on nodeSelector labels. This provides flexibility for environments where certain nodes might have different resource capacities or roles.

Prerequisites

  • You must be logged in as a user with cluster-admin privileges.

Procedure

  1. If you want to use load concurrency for specific nodes, add labels to those nodes:

    $ oc label node/<node_name> label.io/instance-type='large'
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  2. Configure the load concurrency fields for your DPA instance:

      configuration:
        nodeAgent:
          enable: true
          uploaderType: kopia
          loadConcurrency:
            globalConfig: 1
            perNodeConfig:
            - nodeSelector:
                  matchLabels:
                     label.io/instance-type: large
              number: 3
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    where:

    globalConfig
    Specifies the global concurrent number. The default value is 1, which means there is no concurrency and only one load is allowed. The globalConfig value does not have a limit.
    label.io/instance-type
    Specifies the label for per-node concurrency.
    number
    Specifies the per-node concurrent number. You can specify many per-node concurrent numbers, for example, based on the instance type and size. The range of per-node concurrent number is the same as the global concurrent number. If the configuration file contains a per-node concurrent number and a global concurrent number, the per-node concurrent number takes precedence.
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