psm jcs scale-in

This command removes a managed server from a cluster, scaling-in the Oracle Java Cloud Service instance by one node.

With this command, you can:

• Remove one node in the WLS application cluster

• Remove the secondary OTD node (if Oracle Traffic Director is provisioned as a local load balancer)

• Remove one node in the WLS caching (data grid) cluster

You cannot scale in a service instance:

• If the instance was provisioned at the Virtual Image (BASIC) service level

• If a snapshot of the instance has already been taken

When you are scaling in a service instance that uses IP reservations (application cluster nodes only), the IP reservation associated with the removed node is released but not deleted.

Syntax

psm jcs scale-in -s|--service-name serviceName 
    -c|--config-payload pathToJson
      [-of|-–output-format json|html|short]
      [-wc|--wait-until-complete true|false] 

Parameters

All parameters are required unless otherwise noted.

Parameter	Description
-s|--service-name serviceName	Name of the Oracle Java Cloud Service instance.
-c|—config-payload	Specifies the path to the JSON file containing the information necessary to scale-in a Java Cloud Service instance. The format of this file, as shown in Sample Payload, is the same as the request body you provide when scaling in a Java Cloud Service instance by using the REST API. For information about this format, see the Request/Body (scalein-putrequestm) section of Scale In a Service Instance in the REST API for Oracle Java Cloud Service.
-of|-–output-format json|html|short	(Optional) Output format of the command’s response: Accepted values: json, html, short The default output format is the one you specified when using the psm setup command to configure the psm CLI.
-wc|--wait-until-complete true|false	(Optional) A boolean value that, when set to true, makes the command behave synchronously; that is, it does not return until the submitted job is complete. The following message is displayed until the job is complete: Waiting for the job to complete... (it cannot be cancelled) Default: false

Sample Payload

{
   "components": {
      "WLS": {
         "hosts": ["exampleinstance-wls-2"]
      }
   },
   "force": true
} 

Examples

$ psm jcs scale-in -s Example1Instance -c  -c c://home/templates/scale-in-payload.json -of json
{
    "details":{
        "jobId":"34206",
        "message":"JAAS-SCALING-044: Scaling in Job (ID: 34206) server name [Examp_server_2] submitted for service [Example1Instance]"
    },
    "status":"New"
}
Job ID : 34206 

Note that this command returned a job ID. To see the status of your scale-out operation, use this ID with the psm jcs operation-status command:

$ psm jcs operation-status -j 34206 -of json

When you see the message:

   "operationId":364,
   "operationType":"SCALE_IN",
   "resourceId":1073,
   "resourceName":"example1instance-wls-2",
   "resourceType":"VM",
   "serverType":"WLS",
   "serviceId":364,
   "serviceName":"Example1Instance",
   "serviceType":"jaas",
   "startDate":"2016-04-28T18:21:27.539+0000",
   "status":"SUCCEED",
   "summaryMessage":"Examp_server_2"

the service was successfully scaled-in.