Update cluster-autoscaler to version v1.1.0

Release info:
kubernetes/autoscaler/releases/tag/cluster-autoscaler-chart-1.1.0

Signed-off-by: knrt10 <kautilya@kinvolk.io>

assets/charts/components/cluster-autoscaler/Chart.yaml

@@ -17,4 +17,4 @@ name: cluster-autoscaler-chart
 sources:
   - https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler
 type: application
-version: 1.0.2
+version: 1.1.0

assets/charts/components/cluster-autoscaler/README.md.gotmpl

@@ -45,10 +45,15 @@ You must provide some minimal configuration, either to specify instance groups o
 
 Either:
 
-- Set `autoDiscovery.clusterName` and tag your autoscaling groups appropriately (`--cloud-provider=aws` only) **or**
-- Set at least one ASG as an element in the `autoscalingGroups` array with its three values: `name`, `minSize` and `maxSize`.
+- Set `autoDiscovery.clusterName` and provide additional autodiscovery options if necessary **or**
+- Set static node group configurations for one or more node groups (using `autoscalingGroups` or `autoscalingGroupsnamePrefix`).
 
-To install the chart with the release name `my-release`:
+To create a valid configuration, follow instructions for your cloud provider:
+
+* [AWS](#aws---using-auto-discovery-of-tagged-instance-groups)
+* [GCE](#gce)
+* [Azure AKS](#azure-aks)
+* [OpenStack Magnum](#openstack-magnum)
 
 ### AWS - Using auto-discovery of tagged instance groups
 
@@ -163,6 +168,24 @@ The following parameters are required:
 - `azureVMType: "AKS"`
 - `azureNodeResourceGroup: "your-aks-cluster-node-resource-group"`
 
+### OpenStack Magnum
+
+`cloudProvider: magnum` must be set, and then one of
+
+- `magnumClusterName=<cluster name or ID>` and `autoscalingGroups` with the names of node groups and min/max node counts
+- or `autoDiscovery.clusterName=<cluster name or ID>` with one or more `autoDiscovery.roles`.
+
+Additionally, `cloudConfigPath: "/etc/kubernetes/cloud-config"` must be set as this should be the location
+of the cloud-config file on the host.
+
+Example values files can be found [here](../../cluster-autoscaler/cloudprovider/magnum/examples).
+
+Install the chart with
+
+```
+$ helm install my-release autoscaler/cluster-autoscaler-chart -f myvalues.yaml
+```
+
 ## Uninstalling the Chart
 
 To uninstall `my-release`:
@@ -252,7 +275,7 @@ For Kubernetes clusters that use Amazon EKS, the service account can be configur
 
 In order to accomplish this, you will first need to create a new IAM role with the above mentions policies.  Take care in [configuring the trust relationship](https://docs.aws.amazon.com/eks/latest/userguide/iam-roles-for-service-accounts-technical-overview.html#iam-role-configuration) to restrict access just to the service account used by cluster autoscaler.
 
-Once you have the IAM role configured, you would then need to `--set rbac.serviceAccountAnnotations."eks\.amazonaws\.com/role-arn"=arn:aws:iam::123456789012:role/MyRoleName` when installing.
+Once you have the IAM role configured, you would then need to `--set rbac.serviceAccount.annotations."eks\.amazonaws\.com/role-arn"=arn:aws:iam::123456789012:role/MyRoleName` when installing.
 
 ## Troubleshooting
 

assets/charts/components/cluster-autoscaler/templates/deployment.yaml

@@ -67,16 +67,22 @@ spec:
             - --node-group-auto-discovery=mig:namePrefix={{ .name }},min={{ .minSize }},max={{ .maxSize }}
             {{- end }}
           {{- end }}
+          {{- else if eq .Values.cloudProvider "magnum" }}
+            {{- if .Values.autoDiscovery.clusterName }}
+            - --cluster-name={{ .Values.autoDiscovery.clusterName }}
+            - --node-group-auto-discovery=magnum:role={{ tpl (join "," .Values.autoDiscovery.roles) . }}
+            {{- else }}
+            - --cluster-name={{ .Values.magnumClusterName }}
+            {{- end }}
           {{- end }}
-          {{- if eq .Values.cloudProvider "gce" }}
+          {{- if or (eq .Values.cloudProvider "gce") (eq .Values.cloudProvider "magnum") }}
             - --cloud-config={{ .Values.cloudConfigPath }}
           {{- else if eq .Values.cloudProvider "packet" }}
             - --cloud-config={{ .Values.cloudConfigPath }}/cloud-config
           {{- end }}
           {{- range $key, $value := .Values.extraArgs }}
             - --{{ $key }}={{ $value }}
           {{- end }}
-
           env:
           {{- if and (eq .Values.cloudProvider "aws") (ne .Values.awsRegion "") }}
             - name: AWS_REGION
@@ -188,11 +194,16 @@ spec:
           securityContext:
             {{ toYaml .Values.containerSecurityContext | nindent 12 | trim }}
           {{- end }}
-          {{- if or (eq .Values.cloudProvider "gce") (eq .Values.cloudProvider "packet") }}
+          {{- if or (eq .Values.cloudProvider "gce") (eq .Values.cloudProvider "magnum") (eq .Values.cloudProvider "packet") }}
           volumeMounts:
             - name: cloudconfig
               mountPath: {{ .Values.cloudConfigPath }}
               readOnly: true
+          {{- if and (eq .Values.cloudProvider "magnum") (.Values.magnumCABundlePath) }}
+            - name: ca-bundle
+              mountPath: {{ .Values.magnumCABundlePath }}
+              readOnly: true
+          {{- end }}
           {{- end }}
     {{- if .Values.affinity }}
       affinity:
@@ -210,14 +221,19 @@ spec:
         {{ toYaml .Values.securityContext | nindent 8 | trim }}
       {{- end }}
       volumes:
-      {{- if eq .Values.cloudProvider "gce" }}
+      {{- if or (eq .Values.cloudProvider "gce") (eq .Values.cloudProvider "magnum") }}
         - name: cloudconfig
           hostPath:
             path: {{ .Values.cloudConfigPath }}
       {{- else if eq .Values.cloudProvider "packet" }}
         - name: cloudconfig
           secret:
             secretName: {{ template "cluster-autoscaler.fullname" . }}
+      {{- if and (eq .Values.cloudProvider "magnum") (.Values.magnumCABundlePath) }}
+        - name: ca-bundle
+          hostPath:
+            path: {{ .Values.magnumCABundlePath }}
+      {{- end }}
       {{- end }}
       {{- if .Values.image.pullSecrets }}
       imagePullSecrets:

assets/charts/components/cluster-autoscaler/templates/service.yaml

@@ -7,6 +7,9 @@ metadata:
 {{- end }}
   labels:
 {{ include "cluster-autoscaler.labels" . | indent 4 }}
+{{- if .Values.service.labels }}
+{{ toYaml .Values.service.labels | indent 4 }}
+{{- end }}
   name: {{ template "cluster-autoscaler.fullname" . }}
 spec:
 {{- if .Values.service.clusterIP }}

assets/charts/components/cluster-autoscaler/values.yaml

@@ -3,17 +3,25 @@
 affinity: {}
 
 autoDiscovery:
-  # Only cloudProvider `aws` and `gce` are supported by auto-discovery at this time
+  # cloudProviders `aws`, `gce` and `magnum` are supported by auto-discovery at this time
   # AWS: Set tags as described in https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/aws/README.md#auto-discovery-setup
-  # autoDiscovery.clusterName -- Enable autodiscovery for name in ASG tag (only `cloudProvider=aws`). Must be set for `cloudProvider=gce`, but no MIG tagging required.
+
+  # autoDiscovery.clusterName -- Enable autodiscovery for `cloudProvider=aws`, for groups matching `autoDiscovery.tags`.
+  # Enable autodiscovery for `cloudProvider=gce`, but no MIG tagging required.
+  # Enable autodiscovery for `cloudProvider=magnum`, for groups matching `autoDiscovery.roles`.
   clusterName:  # cluster.local
+
   # autoDiscovery.tags -- ASG tags to match, run through `tpl`.
   tags:
   - k8s.io/cluster-autoscaler/enabled
   - k8s.io/cluster-autoscaler/{{ .Values.autoDiscovery.clusterName }}
   # - kubernetes.io/cluster/{{ .Values.autoDiscovery.clusterName }}
 
-# autoscalingGroups -- For AWS. At least one element is required if not using `autoDiscovery`. For example:
+  # autoDiscovery.roles -- Magnum node group roles to match.
+  roles:
+  - worker
+
+# autoscalingGroups -- For AWS, Azure AKS or Magnum. At least one element is required if not using `autoDiscovery`. For example:
 # <pre>
 # - name: asg1<br />
 #   maxSize: 2<br />
@@ -93,12 +101,20 @@ packetFacility: ""
 packetOSChannel: ""
 packetNodeType: ""
 
+# magnumClusterName -- Cluster name or ID in Magnum.
+# Required if `cloudProvider=magnum` and not setting `autoDiscovery.clusterName`.
+magnumClusterName: ""
+
+# magnumCABundlePath -- Path to the host's CA bundle, from `ca-file` in the cloud-config file.
+magnumCABundlePath: "/etc/kubernetes/ca-bundle.crt"
+
 # cloudConfigPath -- Configuration file for cloud provider.
 cloudConfigPath: /etc/gce.conf
 
 # cloudProvider -- The cloud provider where the autoscaler runs.
-# Currently only `gce`, `aws`, `azure`, `spotinst` & `packet` are supported
+# Currently only `gce`, `aws`, `azure`, `spotinst`, `packet` and `magnum` are supported.
 # `aws` supported for AWS. `gce` for GCE. `azure` for Azure AKS.
+# `magnum` for OpenStack Magnum.
 cloudProvider: aws
 
 # containerSecurityContext -- [Security context for container](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/)
@@ -138,7 +154,6 @@ extraArgs:
   # scale-down-delay-after-delete: 0s
   # scale-down-delay-after-failure: 3m
   # scale-down-unneeded-time: 10m
-  # skip-nodes-with-local-storage: false
   # skip-nodes-with-system-pods: true
 
 # extraEnv -- Additional container environment variables.
@@ -220,6 +235,8 @@ securityContext: {}
 service:
   # service.annotations -- Annotations to add to service
   annotations: {}
+  # service.labels -- Labels to add to service
+  labels: {}
   # service.externalIPs -- List of IP addresses at which the service is available. Ref: https://kubernetes.io/docs/user-guide/services/#external-ips.
   externalIPs: []