I am trying to deploy KOPS cluster in AWS environment without using Route53 DNS configuration. I am quite new to KOPS and do not have enough knowledge about network topology. In my cluster, there will have 3 master nodes.

According to my requirement, I need to access the services running inside this KOPS cluster from clients(outside of KOPS cluster). So, I would like to assign pre-created elastic IPs to all master nodes, therefore I can use those pre-created elastic IPs from clients to access the services running inside KOPS cluster.

My question is how can I assign pre-created elastic IPs to all master nodes during KOPS cluster creation?

Below is my currently using command for creating KOPS cluster -

kops create cluster \
    --state=${KOPS_STATE_STORE} \
    --master-zones=${MASTER_ZONES} \
    --zones=${ZONES} \
    --name=test-kops.k8s.local \
    --vpc=${VPC_ID} \
    --image="099720109477/ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-server-20200907" \
    --master-volume-size=40 \
    --master-count=${Master_Count} \
    --node-volume-size=40 \
    --node-count=${Node_Count} \
    --networking=amazon-vpc-routed-eni \
    --subnets=${SUBNET_IDS} \
    --utility-subnets=${SUBNET_IDS} \
    --network-cidr=${NETWORK_CIDR} \
    --ssh-public-key=~/.ssh/id_rsa.pub \
    --dry-run -oyaml > cluster.yaml

kops create -f cluster.yaml

kops create secret --name ${NAME} sshpublickey admin -i ~/.ssh/id_rsa.pub

kops update cluster test-kops.k8s.local --yes

cluster.yaml

apiVersion: kops.k8s.io/v1alpha2
kind: Cluster
metadata:
  creationTimestamp: null
  name: test-kops.k8s.local
spec:
  api:
    loadBalancer:
      type: Public
  authorization:
    rbac: {}
  channel: stable
  cloudProvider: aws
  configBase: s3://{s3url}
  etcdClusters:
  - cpuRequest: 200m
    etcdMembers:
    - instanceGroup: master-ap-southeast-1a-1
      name: "1"
    - instanceGroup: master-ap-southeast-1a-2
      name: "2"
    - instanceGroup: master-ap-southeast-1a-3
      name: "3"
    memoryRequest: 100Mi
    name: main
  - cpuRequest: 100m
    etcdMembers:
    - instanceGroup: master-ap-southeast-1a-1
      name: "1"
    - instanceGroup: master-ap-southeast-1a-2
      name: "2"
    - instanceGroup: master-ap-southeast-1a-3
      name: "3"
    memoryRequest: 100Mi
    name: events
  iam:
    allowContainerRegistry: true
    legacy: false
  kubelet:
    anonymousAuth: false
  kubernetesApiAccess:
  - 0.0.0.0/0
  kubernetesVersion: 1.17.12
  masterPublicName: api.test-kops.k8s.local
  networkCIDR: {vpcCIDR}
  networkID: {vpcID}
  networking:
    amazonvpc: {}
  nonMasqueradeCIDR: 100.64.0.0/10
  sshAccess:
  - 0.0.0.0/0
  subnets:
  - cidr: {subnetCIDR}
    id: {subnetID}
    name: ap-southeast-1a
    type: Public
    zone: ap-southeast-1a
  topology:
    dns:
      type: Public
    masters: public
    nodes: public

---

apiVersion: kops.k8s.io/v1alpha2
kind: InstanceGroup
metadata:
  creationTimestamp: null
  labels:
    kops.k8s.io/cluster: test-kops.k8s.local
  name: master-ap-southeast-1a-1
spec:
  image: 099720109477/ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-server-20200907
  machineType: t3.medium
  maxSize: 1
  minSize: 1
  nodeLabels:
    kops.k8s.io/instancegroup: master-ap-southeast-1a-1
  role: Master
  rootVolumeSize: 40
  subnets:
  - ap-southeast-1a
  additionalSecurityGroups:
  - {securityGroup}

---

apiVersion: kops.k8s.io/v1alpha2
kind: InstanceGroup
metadata:
  creationTimestamp: null
  labels:
    kops.k8s.io/cluster: test-kops.k8s.local
  name: master-ap-southeast-1a-2
spec:
  image: 099720109477/ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-server-20200907
  machineType: t3.medium
  maxSize: 1
  minSize: 1
  nodeLabels:
    kops.k8s.io/instancegroup: master-ap-southeast-1a-2
  role: Master
  rootVolumeSize: 40
  subnets:
  - ap-southeast-1a
  additionalSecurityGroups:
  - {securityGroup}

apiVersion: kops.k8s.io/v1alpha2
kind: InstanceGroup
metadata:
  creationTimestamp: null
  labels:
    kops.k8s.io/cluster: test-kops.k8s.local
  name: master-ap-southeast-1a-3
spec:
  image: 099720109477/ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-server-20200907
  machineType: t3.medium
  maxSize: 1
  minSize: 1
  nodeLabels:
    kops.k8s.io/instancegroup: master-ap-southeast-1a-3
  role: Master
  rootVolumeSize: 40
  subnets:
  - ap-southeast-1a
  additionalSecurityGroups:
  - {securityGroup}

---

apiVersion: kops.k8s.io/v1alpha2
kind: InstanceGroup
metadata:
  creationTimestamp: null
  labels:
    kops.k8s.io/cluster: test-kops.k8s.local
  name: nodes
spec:
  image: 099720109477/ubuntu/images/hvm-ssd/ubuntu-focal-20.04-amd64-server-20200907
  machineType: t3.medium
  maxSize: 5
  minSize: 2
  nodeLabels:
    kops.k8s.io/instancegroup: nodes
  role: Node
  rootVolumeSize: 40
  subnets:
  - ap-southeast-1a
  additionalSecurityGroups:
  - {securityGroup}