kubernetes-aws-autoscaler

kubernetes-aws-autoscaler

Kubernetes autoscaler for aws

Supported releases

• 1.25.6
  • This version is supported kubernetes v1.25
• 1.25.7
  • This version is supported kubernetes v1.25 and support k3s
• 1.26.1
  • This version is supported kubernetes v1.26
• 1.26.2
  • This version is supported kubernetes v1.26 and support k3s
• 1.27.1
  • This version is supported kubernetes v1.27 and support k3s

How it works

This tool will drive AWS to deploy EC2 instance at the demand. The cluster autoscaler deployment use an enhanced version of cluster-autoscaler. https://github.com/Fred78290/autoscaler.

This version use grpc to communicate with the cloud provider hosted outside the pod. A docker image is available here https://hub.docker.com/r/fred78290/cluster-autoscaler

You can also use the vanilla autoscaler with the externalgrpc cloud provider

A sample of the cluster-autoscaler deployment is available at examples/cluster-autoscaler.yaml. You must fill value between <>

Before you must create a kubernetes cluster on AWS

You can do it from scrash or you can use script from projetct autoscaled-masterkube-aws to create a kubernetes cluster in single control plane or in HA mode with 3 control planes.

Commandline arguments

Build

The build process use make file. The simplest way to build is make container

New features

Use k3s

Instead using kubeadm as kubernetes deployment tool, it is possible to use k3s

Use the vanilla autoscaler with extern gRPC cloud provider

You can also use the vanilla autoscaler with the externalgrpc cloud provider

A sample of the cluster-autoscaler deployment with vanilla autoscaler is available at examples/cluster-autoscaler-vanilla.yaml. You must fill value between <>

Cloud provider AWS compliant

Version 1.24.6 and 1.25.2 and above are cloud-provider-aws by building provider-id conform to syntax aws://<zone-id>/<instance-id>

CRD controller

This new release include a CRD controller allowing to create kubernetes node without use of aws cli or code. Just by apply a configuration file, you have the ability to create nodes on the fly.

As exemple you can take a look on artifacts/examples/example.yaml on execute the following command to create a new node

kubectl apply -f artifacts/examples/example.yaml

If you want delete the node just delete the CRD with the call

kubectl delete -f artifacts/examples/example.yaml

You have the ability also to create a control plane as instead a worker

kubectl apply -f artifacts/examples/controlplane.yaml

The resource is cluster scope so you don't need a namespace. The name of the resource is not the name of the managed node.

The minimal resource declaration

apiVersion: "nodemanager.aldunelabs.com/v1alpha1"
kind: "ManagedNode"
metadata:
  name: "aws-ca-k8s-managed-01"
spec:
  nodegroup: aws-ca-k8s
  instanceType: t3a.medium
  diskSizeInGB: 10
  eni:
    subnetID: subnet-1234
    securityGroup: sg-5678

The full qualified resource including networks declaration to override the default controller network management and adding some node labels & annotations. If you specify the managed node as controller, you can also allows the controlplane to support deployment as a worker node

apiVersion: "nodemanager.aldunelabs.com/v1alpha1"
kind: "ManagedNode"
metadata:
  name: "aws-ca-k8s-managed-01"
spec:
  nodegroup: aws-ca-k8s
  controlPlane: false
  allowDeployment: false
  instanceType: t3a.medium
  diskSizeInGB: 10
  labels:
  - demo-label.aldunelabs.com=demo
  - sample-label.aldunelabs.com=sample
  annotations:
  - demo-annotation.aldunelabs.com=demo
  - sample-annotation.aldunelabs.com=sample
  eni:
    subnetID: subnet-1234
    securityGroup: sg-5678
    privateAddress: 172.30.64.80
    publicIP: false

It's possible also to specify an existing ENI.

apiVersion: "nodemanager.aldunelabs.com/v1alpha1"
kind: "ManagedNode"
metadata:
  name: "aws-ca-k8s-master-02"
spec:
  nodegroup: aws-ca-k8s
  controlPlane: true
  allowDeployment: false
  instanceType: t3a.medium
  diskSizeInGB: 20
  labels:
  - demo-label.aldunelabs.com=demo
  - sample-label.aldunelabs.com=sample
  annotations:
  - demo-annotation.aldunelabs.com=demo
  - sample-annotation.aldunelabs.com=sample
  eni:
    networkInterfaceID: eni-0875ac4cdac6da498

Sample config

As example of use generated by autoscaled-masterkube-aws scripts autoscaled-masterkube-aws

{
    "use-external-etcd": false,
    "src-etcd-ssl-dir": "/etc/kubernetes/pki/etcd",
    "dst-etcd-ssl-dir": "/etc/kubernetes/pki/etcd",
    "kubernetes-pki-srcdir": "/etc/kubernetes/pki",
    "kubernetes-pki-dstdir": "/etc/kubernetes/pki",
    "network": "unix",
    "listen": "/var/run/cluster-autoscaler/aws.sock",
    "secret": "aws",
    "minNode": 0,
    "maxNode": 9,
    "maxPods": 17,
    "node-name-prefix": "autoscaled",
    "managed-name-prefix": "managed",
    "controlplane-name-prefix": "master",
    "nodePrice": 0,
    "podPrice": 0,
    "image": "focal-k8s-cni-aws-v1.26.1-containerd-amd64",
    "cloud-provider": "external",
    "optionals": {
        "pricing": false,
        "getAvailableMachineTypes": false,
        "newNodeGroup": false,
        "templateNodeInfo": false,
        "createNodeGroup": false,
        "deleteNodeGroup": false
    },
    "kubeadm": {
        "address": "172.30.73.121:6443",
        "token": "m1vmoc.3ox7sartsgk8f14l",
        "ca": "sha256:70ecc6f82ad1a6938d6fbd4865f4a8d0fb4fcec70cea4140dff3b657b9600c0e",
        "extras-args": [
            "--ignore-preflight-errors=All"
        ]
    },
    "default-machine": "t3a.medium",
    "machines": {
        "t3a.nano": {
            "price": 0.0051,
            "memsize": 512,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3a.micro": {
            "price": 0.0102,
            "memsize": 1024,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3a.small": {
            "price": 0.0204,
            "memsize": 2048,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3a.medium": {
            "price": 0.0408,
            "memsize": 4096,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3a.large": {
            "price": 0.0816,
            "memsize": 8192,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3a.xlarge": {
            "price": 0.1632,
            "memsize": 16384,
            "vcpus": 4,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3a.2xlarge": {
            "price": 0.3264,
            "memsize": 32768,
            "vcpus": 8,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3.nano": {
            "price": 0.0057,
            "memsize": 512,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3.micro": {
            "price": 0.0114,
            "memsize": 1024,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3.small": {
            "price": 0.0228,
            "memsize": 2048,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3.medium": {
            "price": 0.0456,
            "memsize": 4096,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3.large": {
            "price": 0.0912,
            "memsize": 8192,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3.xlarge": {
            "price": 0.1824,
            "memsize": 16384,
            "vcpus": 4,
            "diskType": "gp2",
            "diskSize": 10
        },
        "t3.2xlarge": {
            "price": 0.3648,
            "memsize": 32768,
            "vcpus": 8,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5.large": {
            "vcpus": 2,
            "memsize": 4096,
            "price": 0.101,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5.xlarge": {
            "vcpus": 4,
            "memsize": 8192,
            "price": 0.202,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5.2xlarge": {
            "vcpus": 8,
            "memsize": 16384,
            "price": 0.404,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5.4xlarge": {
            "vcpus": 16,
            "memsize": 32768,
            "price": 0.808,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5.9xlarge": {
            "vcpus": 36,
            "memsize": 73728,
            "price": 1.818,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5.12xlarge": {
            "vcpus": 48,
            "memsize": 98304,
            "price": 2.424,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5.18xlarge": {
            "vcpus": 72,
            "memsize": 147456,
            "price": 3.636,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5.24xlarge": {
            "vcpus": 96,
            "memsize": 196608,
            "price": 4.848,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5a.large": {
            "vcpus": 2,
            "memsize": 4096,
            "price": 0.091,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5a.xlarge": {
            "vcpus": 4,
            "memsize": 8192,
            "price": 0.182,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5a.2xlarge": {
            "vcpus": 8,
            "memsize": 16384,
            "price": 0.364,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5a.4xlarge": {
            "vcpus": 16,
            "memsize": 32768,
            "price": 0.728,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5a.8xlarge": {
            "vcpus": 32,
            "memsize": 65536,
            "price": 1.456,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5a.12xlarge": {
            "vcpus": 48,
            "memsize": 98304,
            "price": 2.184,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5a.16xlarge": {
            "vcpus": 64,
            "memsize": 131072,
            "price": 2.912,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c5a.24xlarge": {
            "vcpus": 96,
            "memsize": 196608,
            "price": 4.368,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5a.large": {
            "price": 0.096,
            "memsize": 8192,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5a.xlarge": {
            "price": 0.192,
            "memsize": 16384,
            "vcpus": 4,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5a.2xlarge": {
            "price": 0.384,
            "memsize": 32768,
            "vcpus": 8,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5a.4xlarge": {
            "price": 0.768,
            "memsize": 65536,
            "vcpus": 16,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5a.8xlarge": {
            "price": 1.536,
            "memsize": 131072,
            "vcpus": 32,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5a.12xlarge": {
            "price": 2.304,
            "memsize": 196608,
            "vcpus": 48,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5a.16xlarge": {
            "price": 3.072,
            "memsize": 196608,
            "vcpus": 64,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5.large": {
            "price": 0.107,
            "memsize": 8192,
            "vcpus": 2,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5.xlarge": {
            "price": 0.214,
            "memsize": 16384,
            "vcpus": 4,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5.2xlarge": {
            "price": 0.428,
            "memsize": 32768,
            "vcpus": 8,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5.4xlarge": {
            "price": 0.856,
            "memsize": 65536,
            "vcpus": 16,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5.8xlarge": {
            "price": 1.712,
            "memsize": 131072,
            "vcpus": 32,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5.12xlarge": {
            "price": 2.568,
            "memsize": 196608,
            "vcpus": 48,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m5.16xlarge": {
            "price": 3.424,
            "memsize": 196608,
            "vcpus": 64,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.large": {
            "vcpus": 2,
            "memsize": 16384,
            "price": 0.148,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.xlarge": {
            "vcpus": 4,
            "memsize": 32768,
            "price": 0.296,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.2xlarge": {
            "vcpus": 8,
            "memsize": 65536,
            "price": 0.592,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5.large": {
            "vcpus": 2,
            "memsize": 16384,
            "price": 0.148,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5.xlarge": {
            "vcpus": 4,
            "memsize": 32768,
            "price": 0.296,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5.2xlarge": {
            "vcpus": 8,
            "memsize": 65536,
            "price": 0.592,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5.4xlarge": {
            "vcpus": 16,
            "memsize": 131072,
            "price": 1.184,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5.8xlarge": {
            "vcpus": 32,
            "memsize": 262144,
            "price": 2.368,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5.12xlarge": {
            "vcpus": 48,
            "memsize": 393216,
            "price": 3.552,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5.16xlarge": {
            "vcpus": 64,
            "memsize": 524288,
            "price": 4.736,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5.24xlarge": {
            "vcpus": 96,
            "memsize": 786432,
            "price": 7.104,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5a.large": {
            "vcpus": 2,
            "memsize": 16384,
            "price": 0.133,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5a.xlarge": {
            "vcpus": 4,
            "memsize": 32768,
            "price": 0.266,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5a.2xlarge": {
            "vcpus": 8,
            "memsize": 65536,
            "price": 0.532,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5a.4xlarge": {
            "vcpus": 16,
            "memsize": 131072,
            "price": 1.064,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5a.8xlarge": {
            "vcpus": 32,
            "memsize": 262144,
            "price": 2.128,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5a.12xlarge": {
            "vcpus": 48,
            "memsize": 393216,
            "price": 3.192,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5a.16xlarge": {
            "vcpus": 64,
            "memsize": 524288,
            "price": 4.256,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r5a.24xlarge": {
            "vcpus": 96,
            "memsize": 786432,
            "price": 6.384,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.4xlarge": {
            "vcpus": 16,
            "memsize": 131072,
            "price": 1.184,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.8xlarge": {
            "vcpus": 32,
            "memsize": 262144,
            "price": 2.368,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.12xlarge": {
            "vcpus": 48,
            "memsize": 393216,
            "price": 3.552,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.16xlarge": {
            "vcpus": 64,
            "memsize": 524288,
            "price": 4.736,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.24xlarge": {
            "vcpus": 96,
            "memsize": 786432,
            "price": 7.104,
            "diskType": "gp2",
            "diskSize": 10
        },
        "r6i.32xlarge": {
            "vcpus": 128,
            "memsize": 1048576,
            "price": 9.472,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.large": {
            "vcpus": 2,
            "memsize": 8192,
            "price": 0.112,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.xlarge": {
            "vcpus": 4,
            "memsize": 16384,
            "price": 0.224,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.2xlarge": {
            "vcpus": 8,
            "memsize": 32768,
            "price": 0.448,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.4xlarge": {
            "vcpus": 16,
            "memsize": 65536,
            "price": 0.896,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.8xlarge": {
            "vcpus": 32,
            "memsize": 131072,
            "price": 1.792,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.12xlarge": {
            "vcpus": 48,
            "memsize": 196608,
            "price": 2.688,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.16xlarge": {
            "vcpus": 64,
            "memsize": 262144,
            "price": 3.584,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.24xlarge": {
            "vcpus": 96,
            "memsize": 393216,
            "price": 5.376,
            "diskType": "gp2",
            "diskSize": 10
        },
        "m6i.32xlarge": {
            "vcpus": 128,
            "memsize": 524288,
            "price": 7.168,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.large": {
            "vcpus": 2,
            "memsize": 4096,
            "price": 0.101,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.xlarge": {
            "vcpus": 4,
            "memsize": 8192,
            "price": 0.202,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.2xlarge": {
            "vcpus": 8,
            "memsize": 16384,
            "price": 0.404,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.4xlarge": {
            "vcpus": 16,
            "memsize": 32768,
            "price": 0.808,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.8xlarge": {
            "vcpus": 32,
            "memsize": 65536,
            "price": 1.616,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.12xlarge": {
            "vcpus": 48,
            "memsize": 98304,
            "price": 2.424,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.16xlarge": {
            "vcpus": 64,
            "memsize": 131072,
            "price": 3.232,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.24xlarge": {
            "vcpus": 96,
            "memsize": 196608,
            "price": 4.848,
            "diskType": "gp2",
            "diskSize": 10
        },
        "c6i.32xlarge": {
            "vcpus": 128,
            "memsize": 262144,
            "price": 6.464,
            "diskType": "gp2",
            "diskSize": 10
        }
    },
    "sync-folder": {},
    "ssh-infos": {
        "wait-ssh-ready-seconds": 180,
        "user": "ubuntu",
        "ssh-private-key": "/etc/ssh/id_rsa"
    },
    "aws": {
        "aws-ca-k8s": {
            "accessKey": "12345678",
            "secretKey": "12345678",
            "token": "",
            "profile": "acme",
            "region": "eu-west-1",
            "keyName": "aws-k8s-key",
            "ami": "ami-12345678",
            "iam-role-arn": "arn:aws:iam::12345678:instance-profile/kubernetes-worker-profile",
            "timeout": 120,
            "tags": [
                {
                    "key": "CustomTag",
                    "value": "CustomValue"
                }
            ],
            "network": {
                "route53": "Z12345678",
                "privateZoneName": "acme.priv",
                "accessKey": "12345678",
                "secretKey": "12345678",
                "token": "",
                "profile": "acme",
                "region": "eu-west-1",
                "eni": [
                    {
                        "subnets": [
                            "subnet-12345678",
                            "subnet-45789",
                            "subnet-123458933"
                        ],
                        "securityGroup": "sg-123456789",
                        "publicIP": false
                    }
                ]
            }
        }
    }
}

Unmaintened releases

All release before 1.25.6 and 1.26.1 are not maintened