heartbeat.yaml

apiVersion: beat.k8s.elastic.co/v1beta1
kind: Beat
metadata:
  name: heartbeat
spec:
  type: heartbeat
  version: 8.0.0
  elasticsearchRef:
    name: elasticsearch
  config:
    heartbeat.monitors:
    - type: tcp
      schedule: '@every 5s'
      hosts: ["elasticsearch-es-http.default.svc:9200"]
      name: elasticsearch-tcp
    - type: http
      id: elasticsearch-cert
      name: elasticsearch-cert
      hosts: ["https://elasticsearch-es-http.default.svc:9200"]
      schedule: '@every 5s'
      ssl:
        certificate_authorities: ['/mnt/elastic-internal/elasticsearch-certs/ca.crt']
      schedule: '@every 5s'
      username: elastic
      password: ${ELASTIC_PASSWORD}
  deployment:
    replicas: 1
    podTemplate:
      spec:
        securityContext:
          runAsUser: 0
        containers:
        - name: heartbeat
          image: docker.elastic.co/beats/heartbeat:8.0.0
          env:
            - name: ELASTIC_PASSWORD
              valueFrom: 
                secretKeyRef:
                  name: elasticsearch-es-elastic-user
                  key: elastic