---
# https://raw.githubusercontent.com/kubernetes/kubernetes/v1.10.2/cluster/addons/fluentd-elasticsearch/es-statefulset.yaml
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: elasticsearch-logging
  namespace: kube-system
  labels:
    k8s-app: elasticsearch-logging
    version: "{{ elasticsearch_image_tag }}"
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  serviceName: elasticsearch-logging
  replicas: 2
  selector:
    matchLabels:
      k8s-app: elasticsearch-logging
      version: "{{ elasticsearch_image_tag }}"
  template:
    metadata:
      labels:
        k8s-app: elasticsearch-logging
        version: "{{ elasticsearch_image_tag }}"
        kubernetes.io/cluster-service: "true"
    spec:
      containers:
      - image: "{{ elasticsearch_image_repo }}:{{ elasticsearch_image_tag }}"
        name: elasticsearch-logging
        resources:
          # need more cpu upon initialization, therefore burstable class
          limits:
            cpu: {{ elasticsearch_cpu_limit }}
{% if elasticsearch_mem_limit is defined and elasticsearch_mem_limit != "0M" %}
            memory: "{{ elasticsearch_mem_limit }}"
{% endif %}
          requests:
            cpu: {{ elasticsearch_cpu_requests }}
{% if elasticsearch_mem_requests is defined and elasticsearch_mem_requests != "0M" %}
            memory: "{{ elasticsearch_mem_requests }}"
{% endif %}
        ports:
        - containerPort: 9200
          name: db
          protocol: TCP
        - containerPort: 9300
          name: transport
          protocol: TCP
        volumeMounts:
        - name: es-persistent-storage
          mountPath: /data
      volumes:
      - name: es-persistent-storage
        emptyDir: {}
      serviceAccountName: efk 
      initContainers:
      - image: alpine:3.6
        command: ["/sbin/sysctl", "-w", "vm.max_map_count=262144"]
        name: elasticsearch-logging-init
        securityContext:
          privileged: true