#!/usr/bin/env bash
set -e
set -o noglob

[ $(id -u) -eq 0 ] || exec sudo $0 $@

# Create directory
mkdir -p /var/lib/k0s/manifests/kube-vip

# Create kube-vip rbac
cat <<EOF > /var/lib/k0s/manifests/kube-vip/rbac.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  name: kube-vip
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
  name: system:kube-vip-role
rules:
  - apiGroups: [""]
    resources: ["services/status"]
    verbs: ["update"]
  - apiGroups: [""]
    resources: ["services", "endpoints"]
    verbs: ["list","get","watch", "update"]
  - apiGroups: [""]
    resources: ["nodes"]
    verbs: ["list","get","watch", "update", "patch"]
  - apiGroups: ["coordination.k8s.io"]
    resources: ["leases"]
    verbs: ["list", "get", "watch", "update", "create"]
  - apiGroups: ["discovery.k8s.io"]
    resources: ["endpointslices"]
    verbs: ["list","get","watch", "update"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: system:kube-vip-binding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:kube-vip-role
subjects:
- kind: ServiceAccount
  name: kube-vip
  namespace: kube-system
EOF

cat <<EOF > /var/lib/k0s/manifests/kube-vip/ds.yaml
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: kube-vip
  namespace: kube-system
  labels:
    app.kubernetes.io/name: kube-vip
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: kube-vip
  template:
    metadata:
      labels:
        app.kubernetes.io/name: kube-vip
    spec:
      containers:
        - name: kube-vip
          image: ghcr.io/kube-vip/kube-vip:v0.6.4
          imagePullPolicy: IfNotPresent
          args: ["manager"]
          env:
            - name: address
              value: "#{ bootstrap_kube_api_addr }#"
            - name: vip_arp
              value: "true"
            - name: lb_enable
              value: "true"
            - name: port
              value: "6443"
            - name: vip_cidr
              value: "32"
            - name: cp_enable
              value: "true"
            - name: cp_namespace
              value: kube-system
            - name: vip_ddns
              value: "false"
            - name: svc_enable
              value: "false"
            - name: vip_leaderelection
              value: "true"
            - name: vip_leaseduration
              value: "15"
            - name: vip_renewdeadline
              value: "10"
            - name: vip_retryperiod
              value: "2"
            - name: prometheus_server
              value: :2112
          securityContext:
            capabilities:
              add: ["NET_ADMIN", "NET_RAW", "SYS_TIME"]
      hostAliases:
        - hostnames:
            - kubernetes
          ip: 127.0.0.1
      hostNetwork: true
      serviceAccountName: kube-vip
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: node-role.kubernetes.io/master
                    operator: Exists
              - matchExpressions:
                  - key: node-role.kubernetes.io/control-plane
                    operator: Exists
      tolerations:
        - effect: NoSchedule
          operator: Exists
        - effect: NoExecute
          operator: Exists
EOF