How to attach autoscaling service and its scaling policy in manifest.yaml file?

[KrishmaBhatia]

Hello,

I am trying to deploy an API or job with the autoscale service, which has its policies defined in a JSON file, to create an autoscaling policy during deployment in SAP CF. I tried different configuration options in manifest.yaml - but no success.

Do you have any idea how to configure the autoscaler service and define its policies in the manifest.yaml project (not the mta.yaml project)? If yes, any git repo/blog reference having a manifest.yaml with a policy.json file would be helpful.

Regards,

Krishma

[silvestre · Accepted solution]

Hi Krishma,

the scaling policy is set via binding parameters. With the current cf CLI version 8, it is possible to provide binding parameters in the CF manifest.yaml, e.g.

applications:
- name: your-app
  buildpacks:
  - nodejs_buildpack
  services:
    - name: your-autoscaler-service
      parameters:
        instance_min_count: 1
        instance_max_count: 3
        scaling_rules:
          - metric_type: "throughput"
            breach_duration_secs: 61
            cool_down_secs: 61
            threshold: 100
            operator: ">="
            adjustment: "+1"
          - metric_type: "throughput"
            breach_duration_secs: 300
            cool_down_secs: 300
            threshold: 1
            operator: "<="
            adjustment: "-1"

Best regards,

Silvestre

[KrishmaBhatia · Accepted solution]

Hi Silvestre,

I tried the above-mentioned way but it is failing while deploying stating "For application 'jobname': Service instance 'my-autoscaler-service' not found".I have mentioned it in the manifest.yaml as follows:-

---applications: - name: jobname host: hostname memory: 1G buildpack: https://github.com/cloudfoundry/java-buildpack.git

path: target/jarname.jar routes: - route: routename-((SPACE_NAME))-((ORG_NAME)).((HOST)) services: - name: my-autoscaler-service parameters: instance_min_count: 1 instance_max_count: 3 scaling_rules: - metric_type: "throughput" breach_duration_secs: 61 cool_down_secs: 61 threshold: 100 operator: ">=" adjustment: "+2" - metric_type: "throughput" breach_duration_secs: 300 cool_down_secs: 300 threshold: 1 operator: "<=" adjustment: "-2" - destinationname - databasename - por-logging-servicename - por-xsuaa-name - por-jobscheduler-name

Do I need to first create "my-autoscaler-service" service instance in BTP cockpit instances and subscriptions tab?

Regards,

Krishma

[silvestre · Accepted solution]

Yes, creating service instances is not supported in CF manifests so you need to create service instances such as the one of Application Autoscaler using other means, e.g., the cockpit or the CLI (cf create-service) beforehand - but it's a one-time action

[KrishmaBhatia · Accepted solution]

Thanks Silvestre! It worked hence closing it.

Regards,

Krishma