Admin: Scheduler Rules

Scheduler rules can be applied to optionally limit the types of task that a cluster node can execute. Scheduler rules are applied by updating the SchedulerRules database field, which is located in the rpi_ClusterNodes table in the Pulse operational database. They are configured by updating the field value with a JSON document, as per the following example:

JSON

{
  "JobRules": [
    {
      "Type": "Task",
      "JobNames": [
        "Web events importer",
        "Web cache data importer"
      ]
    }
  ],
  "Clients": [
    "A31519BE-48F0-452C-9A8B-64E76E199BAA"
  ]
}

The document's properties are as follows:

Type: as per rpi_ExecutionSchedule.Type

JobNames: this property can be used to further qualify Type. If Type is set to 'Task', the property can be used to specify specific task name(s), as per rpi_Tasks.TaskName. Else the value specified should be set as per rpi_ExecutionSchedule.Name.

Clients: as per rpi_Clients.ClientID

If scheduler rules are applied, a node will only be able to execute work in accordance with the specified restrictions. If a node in a multi-node cluster is configured with scheduler rules, it will be given priority to execute the work to which limited.