cdk8s-cluster-autoscaler-aws

Synths an install manifest for cluster-autoscaler AWS

Controller version : v1.17.3

Overview

cluster-autoscaler-autodiscover.yaml example

import { Construct } from 'constructs';
import { App, Chart, ChartProps } from 'cdk8s';
import { ClusterAutoScaler } from '@opencdk8s/cdk8s-cluster-autoscaler-aws';


export class MyChart extends Chart {
  constructor(scope: Construct, id: string, props: ChartProps = { }) {
    super(scope, id, props);

    const clusterName = 'example';

    new ClusterAutoScaler(this, 'example', {
      createServiceAccount: true,
      command: [
        `--node-group-auto-discovery=asg:tag=k8s.io/cluster-autoscaler/enabled,k8s.io/cluster-autoscaler/${clusterName}`,
      ],
    })

  }
}

const app = new App();
new MyChart(app, 'example');
app.synth();

cluster-autoscaler-autodiscover.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-addon: cluster-autoscaler.addons.k8s.io
    k8s-app: cluster-autoscaler
  name: cluster-autoscaler
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    k8s-addon: cluster-autoscaler.addons.k8s.io
    k8s-app: cluster-autoscaler
  name: cluster-autoscaler
rules:
  - apiGroups:
      - ""
    resources:
      - events
      - endpoints
    verbs:
      - create
      - patch
  - apiGroups:
      - ""
    resources:
      - pods/eviction
    verbs:
      - create
  - apiGroups:
      - ""
    resources:
      - pods/status
    verbs:
      - update
  - apiGroups:
      - ""
    resourceNames:
      - cluster-autoscaler
    resources:
      - endpoints
    verbs:
      - get
      - update
  - apiGroups:
      - ""
    resources:
      - nodes
    verbs:
      - watch
      - list
      - get
      - update
  - apiGroups:
      - ""
    resources:
      - pods
      - services
      - replicationcontrollers
      - persistentvolumeclaims
      - persistentvolumes
    verbs:
      - watch
      - list
      - get
  - apiGroups:
      - extensions
    resources:
      - replicasets
      - daemonsets
    verbs:
      - watch
      - list
      - get
  - apiGroups:
      - policy
    resources:
      - poddisruptionbudgets
    verbs:
      - watch
      - list
  - apiGroups:
      - apps
    resources:
      - statefulsets
      - replicasets
      - daemonsets
    verbs:
      - watch
      - list
      - get
  - apiGroups:
      - storage.k8s.io
    resources:
      - storageclasses
      - csinodes
    verbs:
      - watch
      - list
      - get
  - apiGroups:
      - batch
      - extensions
    resources:
      - jobs
    verbs:
      - get
      - list
      - watch
      - patch
  - apiGroups:
      - coordination.k8s.io
    resources:
      - leases
    verbs:
      - create
  - apiGroups:
      - coordination.k8s.io
    resourceNames:
      - cluster-autoscaler
    resources:
      - leases
    verbs:
      - get
      - update
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  labels:
    k8s-addon: cluster-autoscaler.addons.k8s.io
    k8s-app: cluster-autoscaler
  name: cluster-autoscaler
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-autoscaler
subjects:
  - kind: ServiceAccount
    name: cluster-autoscaler
    namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  labels:
    k8s-addon: cluster-autoscaler.addons.k8s.io
    k8s-app: cluster-autoscaler
  name: cluster-autoscaler
  namespace: kube-system
rules:
  - apiGroups:
      - ""
    resources:
      - configmaps
    verbs:
      - create
      - list
      - watch
  - apiGroups:
      - ""
    resourceNames:
      - cluster-autoscaler-status
      - cluster-autoscaler-priority-expander
    resources:
      - configmaps
    verbs:
      - delete
      - get
      - update
      - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    k8s-addon: cluster-autoscaler.addons.k8s.io
    k8s-app: cluster-autoscaler
  name: cluster-autoscaler
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: cluster-autoscaler
subjects:
  - kind: ServiceAccount
    name: cluster-autoscaler
    namespace: kube-system
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: cluster-autoscaler
  name: cluster-autoscaler
  namespace: kube-system
spec:
  replicas: 1
  selector:
    matchLabels:
      app: cluster-autoscaler
  template:
    metadata:
      annotations:
        prometheus.io/port: "8085"
        prometheus.io/scrape: "true"
      labels:
        app: cluster-autoscaler
    spec:
      containers:
        - command:
            - ./cluster-autoscaler
            - --v=4
            - ----stderrthreshold=info
            - --cloud-provider=aws
            - --skip-nodes-with-local-storage=false
            - --expander=least-waste
            - --node-group-auto-discovery=asg:tag=k8s.io/cluster-autoscaler/enabled,k8s.io/cluster-autoscaler/example
          image: k8s.gcr.io/autoscaling/cluster-autoscaler:v1.17.3
          imagePullPolicy: Always
          name: cluster-autoscaler
          resources:
            limits:
              cpu: 100m
              memory: 300Mi
            requests:
              cpu: 100m
              memory: 300Mi
          volumeMounts:
            - mountPath: /etc/ssl/certs/ca-certificates.crt
              name: ssl-certs
              readOnly: true
      serviceAccountName: cluster-autoscaler
      volumes:
        - hostPath:
            path: /etc/ssl/certs/ca-bundle.crt
          name: ssl-certs

Installation

TypeScript

Use yarn or npm to install.

$ npm install @opencdk8s/cdk8s-cluster-autoscaler-aws

$ yarn add @opencdk8s/cdk8s-cluster-autoscaler-aws

Python

$ pip install cdk8s-cluster-autoscaler-aws

Contribution

1. Fork (link)

2. Bootstrap the repo:

   npx projen   # generates package.json 
   yarn install # installs dependencies

3. Development scripts:

   Command	Description
   yarn compile	Compiles typescript => javascript
   yarn watch	watch & compile
   yarn test	Run unit test & linter through jest
   yarn test -u	Update jest snapshots
   yarn run package	Creates a dist with packages for all languages.
   yarn build	Compile + test + package
   yarn bump	Bump version (with changelog) based on [conventional commits]
   yarn release	Bump + push to master

4. Create a feature branch

5. Commit your changes

6. Rebase your local changes against the master branch

7. Create a new Pull Request (use conventional commits for the title please)

Licence

Apache License, Version 2.0

Author

Hunter-Thompson