# Deployment for the node-balancer
apiVersion: apps/v1
kind: Deployment
metadata:
  name: node-balancer
  namespace: kube-system
spec:
  replicas: 1
  selector:
    matchLabels:
      app: node-balancer
  template:
    metadata:
      labels:
        app: node-balancer
    spec:
      serviceAccountName: node-balancer
      containers:
      - name: node-balancer
        image: allardkrings/node-balancer:1.0
        imagePullPolicy: Always
        env:
        - name: CPU_OVERLOAD_THRESHOLD
          value: "50"
        - name: CPU_UNDERLOAD_THRESHOLD
          value: "10"
        - name: MEMORY_OVERLOAD_THRESHOLD
          value: "70"
        - name: MEMORY_UNDERLOAD_THRESHOLD
          value: "30"
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: node-balancer
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: node-balancer
rules:
  - apiGroups: [""]
    resources: ["nodes", "pods"]
    verbs: ["get", "list", "watch", "delete"]
  - apiGroups: ["metrics.k8s.io"]
    resources: ["nodes"]
    verbs: ["get", "list", "watch"]
---
# Binding of role to account
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: node-balancer-binding
subjects:
  - kind: ServiceAccount
    name: node-balancer
    namespace: kube-system
roleRef:
  kind: ClusterRole
  name: node-balancer
  apiGroup: rbac.authorization.k8s.io