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incubator/kube-downscaler: Manage Resources (#22929)
This commit makes a few minor modifications to the way the Helm chart allows users to manage downscaler resources. The core functionality has not changed since `extraArgs` already existed. These changes improve upon how a user interacts with specific commandline arguments to better manage the resources. First `clusterrole.yaml` was updated to take a list of resources from the values file. This will allow the resource configuration in the for the role to match the commandline argument for `include-resources`. Second `include-resources` was added as a commandline argument so that users can have full control over which resources the downscaler does and does not have access to. This could be achieved previously by the use of `extraArgs` but it is now a cleaner interaction for the user since they don't need to worry about list formatting. _Both the `clusterrole.yaml` and `deployment.yaml` get the resources to manage from `downscaleResources` in `values.yaml`._ Third `exclude-namespaces` and `exclude-deployments` were added as commandline arguments to help improve users ability to exclude specific namespaces and deployments from the downscaler. This was able to be done previously with the use of `extraArgs` but much like the other changes this makes the user interaction more clean and manageable. Both of these arguments derive their values from `excludedNamespaces` and `excludedDeployments` in `values.yaml` respectively. Signed-off-by: Christopher Pisano <cpisano@morningconsult.com>
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Chris Pisano
@@ -1,6 +1,6 @@
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name: kube-downscaler
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apiVersion: v1
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version: 0.4.0
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version: 0.4.1
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appVersion: 19.10.1
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description: A Helm chart for kube-downscaler
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home: https://github.com/hjacobs/kube-downscaler
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@@ -42,26 +42,29 @@ The command removes all the Kubernetes components associated with the chart and
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The following tables lists the configurable parameters of the kube-downscaler chart and their default values.
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| Parameter | Description | Default |
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| ------------------------- | ---------------------------------------------------------------------------------------------------- | ------------------------- |
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| `replicaCount` | Number of replicas to run | `1` |
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| `name` | How to name resources created by this chart | `kube-downscaler` |
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| `debug.enable` | Do you want to start the downscaler in debug mode | `false` |
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| `namespace.active_in` | Which namespace does the downscaler scans for deployment/statefulsets to downscale (`''` equals all) | `''` |
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| `interval` | Interval between scans, in seconds | `60` |
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| `image.repository` | Downscaler container image repository | `hjacobs/kube-downscaler` |
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| `image.tag` | Downscaler container image tag | `19.10.1` |
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| `image.pullPolicy` | Downscaler container image pull policy | `IfNotPresent` |
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| `nodeSelector` | Node labels for downscaler pod assignment | `{}` |
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| `tolerations` | Downscaler pod toleration for taints | `[]` |
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| `affinity` | Downscaler pod affinity | `{}` |
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| `podAnnotations` | Annotations to be added to downscaler pod | `{}` |
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| `podLabels` | Labels to be added to downscaler pod | `{}` |
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| `resources` | Downscaler pod resource requests & limits | `{}` |
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| `securityContext` | SecurityContext to apply to the downscaler pod | `{}` |
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| `rbac.create` | If true, create & use RBAC resources | `true` |
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| `rbac.serviceAccountName` | ServiceAccount downscaler will use (ignored if rbac.create=true) | `default` |
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| `extraArgs` | Add extra args to docker command | `[]` |
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| Parameter | Description | Default |
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| ----------------------- | ---------------------------------------------------------------------------------------------------- | --------------------------------------- |
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| `replicaCount` | Number of replicas to run | `1` |
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| `name` | How to name resources created by this chart | `kube-downscaler` |
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| `debug.enable` | Do you want to start the downscaler in debug mode | `false` |
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| `namespace.active_in` | Which namespace does the downscaler scans for deployment/statefulsets to downscale (`''` equals all) | `''` |
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| `interval` | Interval between scans, in seconds | `60` |
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| `image.repository` | Downscaler container image repository | `hjacobs/kube-downscaler` |
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| `image.tag` | Downscaler container image tag | `19.10.1` |
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| `image.pullPolicy` | Downscaler container image pull policy | `IfNotPresent` |
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| `nodeSelector` | Node labels for downscaler pod assignment | `{}` |
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| `tolerations` | Downscaler pod toleration for taints | `[]` |
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| `affinity` | Downscaler pod affinity | `{}` |
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| `podAnnotations` | Annotations to be added to downscaler pod | `{}` |
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| `podLabels` | Labels to be added to downscaler pod | `{}` |
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| `resources` | Downscaler pod resource requests & limits | `{}` |
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| `securityContext` | SecurityContext to apply to the downscaler pod | `{}` |
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| `rbac.create` | If true, create & use RBAC resources | `true` |
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| `rbac.serviceAccountName` | ServiceAccount downscaler will use (ignored if rbac.create=true) | `default` |
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| `downscaleResources` | Resources the downscaler is allowed to manage | `[deployments, statefulsets, namespaces]` |
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| `excludedDeployments` | Deployments to exclude from the downscaler | `[]` |
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| `excludedNamespaces` | Namespaces to exclude from the downscaler | `[]` |
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| `extraArgs` | Add extra args to docker command | `[]` |
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> **Tip**: You can use the default [values.yaml](values.yaml)
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@@ -20,9 +20,9 @@ rules:
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- apiGroups:
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- "*"
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resources:
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- deployments
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- statefulsets
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- namespaces
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{{- range .Values.downscaleResources }}
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- {{ . }}
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{{- end }}
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verbs:
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- get
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- watch
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@@ -37,9 +37,16 @@ spec:
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- --namespace="{{ .Values.namespace.active_in }}"
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{{- end }}
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{{- end }}
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{{ if .Values.debug.enable }}
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{{- if .Values.debug.enable }}
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- --debug
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{{end }}
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{{- end }}
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- --include-resources="{{- join "," .Values.downscaleResources }}"
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{{- if .Values.excludedNamespaces }}
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- --exclude-namespaces="{{- join "," .Values.excludedNamespaces }}"
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{{- end }}
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{{- if .Values.excludedDeployments }}
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- --exclude-deployments="{{- join "," .Values.excludedDeployments }}"
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{{- end }}
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{{- with .Values.extraArgs }}
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{{ toYaml . | indent 10 }}
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{{- end }}
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@@ -12,6 +12,18 @@ namespace:
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# Deployment will query all namespaces if left empty:
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active_in: ''
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# The resources kinds kube-downscaler is allowed to manage
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downscaleResources:
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- deployments
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- statefulsets
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- namespaces
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# List of namespaces to be excluded from the downscaler
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excludedNamespaces: []
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# List of deployments to be excluded from the downscaler
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excludedDeployments: []
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# Default is 1 minute.
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interval: 60
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