# Configuring Add On Resource Requests And Limits

PMK allows the users to set the request and limits of an add-on. This guide walks through the steps involved in setting these resources, as well as, describes the available resource fields per add-on.

## How to use this feature

* On the workload cluster, list the add-ons to ensure that the add-on you are looking to modify is available.
* Pick the add-on you wish to add resource specifications to. In this example, we will use `metalLB`. Edit the `metalLB` add-on object, and add the following fields to it under the `override.params` section:
* Save and exit.

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{% tab title="YAML" %}

```yaml
kubectl get addons -n pf9-addons
NAME                                                        AGE
700213ef-3a4b-4777-8d42-ca4017494b52-coredns                20d
700213ef-3a4b-4777-8d42-ca4017494b52-kubernetes-dashboard   20d
700213ef-3a4b-4777-8d42-ca4017494b52-metallb                20d
700213ef-3a4b-4777-8d42-ca4017494b52-metrics-server         20d
700213ef-3a4b-4777-8d42-ca4017494b52-monitoring             20d
```

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{% tab title="YAML" %}

```yaml
apiVersion: agent.pf9.io/v1
kind: Addon
metadata:
  creationTimestamp: "2024-04-15T20:46:04Z"
  finalizers:
  - addons.pf9.io
  generation: 2
  name: 700213ef-3a4b-4777-8d42-ca4017494b52-metallb
  namespace: pf9-addons
  resourceVersion: "2657929"
  uid: 5aa4a33f-1869-4ae2-a606-c04143272988
spec:
  clusterID: 700213ef-3a4b-4777-8d42-ca4017494b52
  override:
    params:
    - name: MetallbIpRange
      value: 192.168.78.79-192.168.78.99
    - name: controllerCPULimit      #<----------
      value: 534m                   #<----------
    - name: controllerMemoryLimit   #<----------
      value: 525Mi                  #<----------
    - name: speakerCPULimit         #<----------
      value: 546m                   #<----------
    - name: speakerMemoryLimit      #<----------
      value: 533Mi                  #<----------
    - name: controllerCPURequest    #<----------
      value: 34m                    #<----------
    - name: controllerMemoryRequest #<---------- 
      value: 25Mi                   #<----------
    - name: speakerCPURequest       #<----------
      value: 46m                    #<----------
    - name: speakerMemoryRequest    #<----------
      value: 33Mi                   #<----------
    - name: localOverride           #<----------
      value: "true"                 #<----------
  type: metallb
  version: 0.13.11
  watch: true
status:
  healthy: true
  observedGeneration: 2
  phase: Installed
```

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{% hint style="warning" %}
**Important**

It is important to set the `localOverride` field in the addon object. Without this set, the default behavior of sunpike being the source of truth will continue.

If there is a key in the override list that the addon operator does not recognize, it will simply ignore it.
{% endhint %}

* Once these fields are set, you will see the values showing up on the actual addon objects.

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{% tab title="YAML" %}

```yaml
kubectl get ds -n metallb-system speaker -o yaml | yq .spec.template.spec.containers[0].resources
limits:
  cpu: 546m
  memory: 533Mi
requests:
  cpu: 46m
  memory: 33Mi
kubectl get deploy -n metallb-system controller -o yaml | yq .spec.template.spec.containers[0].resources
limits:
  cpu: 534m
  memory: 525Mi
requests:
  cpu: 34m
  memory: 25Mi
```

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## Reference

The list of supported resource field names per addon is as follows:

#### Cluster Autoscaler (AWS)

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{% tab title="YAML" %}

```yaml
limit:
        cpuLimit | default "200m"
        memoryLimit | default "600Mi"
requests:
          cpuRequest | default "100m"
          memoryRequest | default "300Mi"
```

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#### CoreDNS

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{% tab title="YAML" %}

```yaml
limits:
        dnsCPULimit | default "1"
        dnsMemoryLimit (this is a required field; left as is to maintain backward compatibility)
        dnsAutoscalerCPULimit | default "200m"
        dnsAutoscalerMemoryLimit | default "600Mi"
requests:
          dnsCPURequest | default "100m"
          dnsMemoryRequest | default "70Mi"
          dnsAutoscalerCPURequest | default "20m"
          dnsAutoscalerMemoryRequest | default "10Mi"
```

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#### Kubernetes Dashboard

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{% tab title="YAML" %}

```yaml
limits:
        metricsScraperCPULimit | default "100m"
        metricsScraperMemoryLimit | default "300Mi"
        dashboardCPULimit | default "2000m"
        dashboardMemoryLimit | default "2Gi"
requests:
        metricsScraperCPURequest | default "10m"
        metricsScraperMemoryRequest | default "50Mi"
        dashboardCPURequest | default "200m"
        dashboardMemoryRequest | default "100Mi"
```

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#### Kubevirt

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{% tab title="YAML" %}

```yaml
limits:
        CDIOperatorCPULimit | default "100m"
        CDIOperatorMemoryLimit | default "300Mi"
        virtOperatorCPULimit | default "100m"
        virtOperatorMemoryLimit | default "1Gi"
        vncCPULimit | default "500m"
        vncMemoryLimit | default "500Mi"
requests:
            CDIOperatorCPURequest | default "10m"
            CDIOperatorMemoryRequest | default "150Mi"
            virtOperatorCPURequest | default "10m"
            virtOperatorMemoryRequest | default "450Mi"
            vncCPURequest | default "10m"
            vncMemoryRequest | default "10Mi"
```

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#### Luigi (Advanced Networking Operator)

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{% tab title="YAML" %}

```yaml
limits:
        luigiCPULimit | default "100m"
        luigiMemoryLimit | default "128Mi"
requests:
          luigiCPURequest | default "50m"
          luigiMemoryRequest | default "64Mi"
```

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#### MetalLB

{% tabs %}
{% tab title="YAML" %}

```yaml
limits:
        controllerCPULimit | default "500m"
        controllerMemoryLimit | default "500Mi"
        speakerCPULimit | default "500m"
        speakerMemoryLimit | default "500Mi"
requests:
          controllerCPURequest | default "100m"
          controllerMemoryRequest | default "100Mi"
          speakerCPURequest | default "100m"
          speakerMemoryRequest | default "100Mi"
```

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#### Metrics Server

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{% tab title="YAML" %}

```yaml
limits:
        metricsCpuLimit | default "100m"
        metricsMemoryLimit | default "300Mi"
requests:
          metricsCpuRequest | default "5m"
          metricsMemoryRequest | default "50Mi"
```

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#### Monitoring

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{% tab title="YAML" %}

```yaml
limits:
        grafanaCPULimit | default "1000m"
        grafanaMemoryLimit | default "512Mi"
        ksmCPULimit | default "300m"
        ksmMemoryLimit | default "300Mi"
        monhelperCPULimit | default "200m"
        monhelperMemoryLimit | default "100Mi
        nodeExporterCPULimit | default "250m"
        nodeExporterMemoryLimit | default "180Mi"
        prometheusOperatorCPULimit | default "200m"
        prometheusOperatorMemoryLimit | default "200Mi"
requests:
          grafanaCPURequest | default "100m"
          grafanaMemoryRequest | default "256Mi"
          ksmCPURequest | default "100m"
          ksmMemoryRequest | default "150Mi"
          monhelperCPURequest | default "25m"
          monhelperMemoryRequest | default "25Mi"
          nodeExporterCPURequest | default "100m"
          nodeExporterMemoryRequest | default "100Mi"
          prometheusOperatorCPURequest | default "100m"
          prometheusOperatorMemoryRequest | default "100Mi"
```

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