# ---------------------------
# exascaler CSI Node Server
# ---------------------------
#
# Runs driver node server (driver + registrar) on each node
#

apiVersion: v1
kind: ServiceAccount
metadata:
  name: exascaler-csi-node-service-account
  namespace: {{ .Release.Namespace }}
---

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: exascaler-csi-node-cluster-role
rules:
  - apiGroups: ['']
    resources: ['events']
    verbs: ['get', 'list', 'watch', 'create', 'update', 'patch']
---

kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: exascaler-csi-node-cluster-role-binding
subjects:
  - kind: ServiceAccount
    name: exascaler-csi-node-service-account
    namespace: {{ .Release.Namespace }}
roleRef:
  kind: ClusterRole
  name: exascaler-csi-node-cluster-role
  apiGroup: rbac.authorization.k8s.io
---

# exascaler Node Server as a daemon

kind: DaemonSet
apiVersion: apps/v1
metadata:
  name: exascaler-csi-node
  namespace: {{ .Release.Namespace }}
spec:
  selector:
    matchLabels:
      app: exascaler-csi-node
  template:
    metadata:
      labels:
        app: exascaler-csi-node
    spec:
      serviceAccount: exascaler-csi-node-service-account
      priorityClassName: {{ .Values.priorityClassName }}
      hostNetwork: true
      containers:
        # driver-registrar: sidecar container that:
        # 1) registers the CSI driver with kubelet
        # 2) adds the drivers custom NodeId to a label on the Kubernetes Node API Object
        - name: driver-registrar
          resources: {{ .Values.resources | default .Values.registrar.resources | toYaml | nindent 12 }}
          image: {{ .Values.registrar.repository }}:{{ .Values.registrar.tag }}
          imagePullPolicy: {{ .Values.registrar.pullPolicy }}
          args:
            - --v=5
            - --csi-address=/csi/csi.sock
            - --kubelet-registration-path=/var/lib/kubelet/plugins/exa.csi.ddn.com/csi.sock
          livenessProbe:
            exec:
              command:
              - /csi-node-driver-registrar
              - --kubelet-registration-path=/var/lib/kubelet/plugins/exa.csi.ddn.com/csi.sock
              - --mode=kubelet-registration-probe
            initialDelaySeconds: 30
            timeoutSeconds: 15
          env:
            - name: KUBE_NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: GOMEMLIMIT
              valueFrom:
                resourceFieldRef:
                  divisor: "0"
                  resource: limits.memory
            - name: GOMAXPROCS
              valueFrom:
                resourceFieldRef:
                  divisor: "0"
                  resource: limits.cpu
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
            - name: registration-dir
              mountPath: /registration
        - name: driver
          resources: {{ .Values.resources | default .Values.image.resources | toYaml | nindent 12 }}
          securityContext:
            privileged: true
            capabilities:
              add: ['SYS_ADMIN']
            allowPrivilegeEscalation: true
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
          imagePullPolicy: "{{ .Values.image.pullPolicy }}"
          args:
            - --nodeid=$(KUBE_NODE_NAME)
            - --endpoint=unix://csi/csi.sock
            - --role=node
          env:
            - name: KUBE_NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: GOMEMLIMIT
              valueFrom:
                resourceFieldRef:
                  divisor: "0"
                  resource: limits.memory
            - name: GOMAXPROCS
              valueFrom:
                resourceFieldRef:
                  divisor: "0"
                  resource: limits.cpu
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
            - name: secret
              mountPath: /config
            - name: host
              mountPath: /host
              mountPropagation: Bidirectional
            - name: pods-mount-dir
              mountPath: /var/lib/kubelet/pods
              mountPropagation: Bidirectional
      volumes:
        - name: socket-dir
          hostPath:
            path: /var/lib/kubelet/plugins/exa.csi.ddn.com
            type: DirectoryOrCreate
        - name: registration-dir
          hostPath:
            path: /var/lib/kubelet/plugins_registry/
            type: Directory
        - name: pods-mount-dir
          hostPath:
            path: /var/lib/kubelet/pods
            type: Directory
        - name: host
          hostPath:
            path: /
            type: Directory
        - name: secret
          secret:
            secretName: {{ .Values.secretName }}
---