Kibana is unable to display metrics on kibana discover tab

[skumarya]

we were using 7.16 elasticsearch,kibana and filebeat verison earlier which used to scrap metrics and displayed in the kibana discover tab but when upgraded to 8.8.0 it doesn't display
elastic,kibana and filebeat yaml file we are using is
apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Elasticsearch
metadata:
name: elasticsearch
labels:
app.kubernetes.io/part-of: {{ .Chart.Name }}
app.kubernetes.io/name: elasticsearch
spotfire-str-installer: "true"
spec:
version: {{ .Values.elasticsearch.version | quote }}
nodeSets:

• name: default
  count: 1
  config:
  node.roles: ["master", "data", "ingest", "remote_cluster_client"]
  node.store.allow_mmap: false
  volumeClaimTemplates:
• metadata:
  name: elasticsearch-data
  spec:
  accessModes:
• ReadWriteOnce
  resources:
  requests:
  storage: {{ (index .Values .Values.size).elasticsearch.disk | quote }}
  podTemplate:
  spec:
  enableServiceLinks: false
  containers:
• name: elasticsearch
  resources:
  limits:
  memory: {{ (index .Values .Values.size).elasticsearch.memory | quote }}
  http:
  tls:
  selfSignedCertificate:
  disabled: false
  service:
  spec:
  ports:
• name: https
  port: 9200
  protocol: TCP
  targetPort: https

---

apiVersion: kibana.k8s.elastic.co/v1
kind: Kibana
metadata:
name: kibana
labels:
app.kubernetes.io/part-of: {{ .Chart.Name }}
app.kubernetes.io/name: kibana
spec:
version: {{ .Values.kibana.version | quote }}
count: 1
podTemplate:
spec:
containers:

• name: kibana
  env:
• name: ELASTICSEARCH_URL
  value: https://elasticsearch-es-http:9200
• name: ELASTICSEARCH_HOSTS
  value: https://elasticsearch-es-http:9200
  elasticsearchRef:
  name: elasticsearch
  http:
  tls:
  selfSignedCertificate:
  disabled: false
  service:
  spec:
  ports:
• name: https
  port: 443
  protocol: TCP
  targetPort: https

---

apiVersion: beat.k8s.elastic.co/v1beta1
kind: Beat
metadata:
name: filebeat
spec:
type: filebeat
version: {{ .Values.elasticsearch.version | quote }}
elasticsearchRef:
name: elasticsearch
kibanaRef:
name: kibana
config:
filebeat.autodiscover:
providers:

• node: $(NODE_NAME)
  type: kubernetes
  hints.default_config.enabled: "false"
  templates:
• condition.equals.kubernetes.labels.tekton_dev/memberOf: "tasks"
  config:
• paths: ["/var/log/containers/*${data.kubernetes.container.id}.log"]
  type: container
  processors:
• add_cloud_metadata: {}
• add_host_metadata: {}
  output.elasticsearch.index: "tekton"
  setup.template.name: "tekton"
  setup.template.pattern: "tekton"
  filebeat.modules:
• module: system
  syslog:
  enabled: true
  auth:
  enabled: true
  daemonSet:
  podTemplate:
  spec:
  serviceAccountName: prometheus
  automountServiceAccountToken: true
  terminationGracePeriodSeconds: 30
  dnsPolicy: ClusterFirstWithHostNet
  hostNetwork: true
  containers:
• name: filebeat
  securityContext:
  runAsUser: 0
  {{- if eq .Values.cloud "openshift" }}
  privileged: true
  {{- end }}
  volumeMounts:
• name: varlogcontainers
  mountPath: /var/log/containers
• name: varlogpods
  mountPath: /var/log/pods
• name: varlibdockercontainers
  mountPath: /var/lib/docker/containers
  env:
• name: NODE_NAME
  valueFrom:
  fieldRef:
  fieldPath: spec.nodeName
  volumes:
• name: varlogcontainers
  hostPath:
  path: /var/log/containers
• name: varlogpods
  hostPath:
  path: /var/log/pods
• name: varlibdockercontainers
  hostPath:
  path: /var/lib/docker/containers
  !
  Also we cant see the time keeper dropdown in kibana discover tab