Kubernetes deployment for the statsd-exporter tool

statsd-exporter.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: statsd-exporter
  namespace: <namespace>
spec:
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  replicas: 3
  selector:
    matchLabels:
      app: statsd-exporter
  template:
    metadata:
      annotations:
        prometheus.io/port: "9102"
        prometheus.io/scrape: "true"
      labels:
        app: statsd-exporter
    spec:
      containers:
      - args:
        - --statsd.mapping-config=/etc/statsd.yml 
        - --statsd.listen-udp=:9125
        - --statsd.listen-tcp=:9125
        - --web.listen-address=:9102
        - --log.level=info

        volumeMounts:
        - mountPath: /etc/statsd.yml
          subPath: statsd.yml
          name: statsd-yaml
          readOnly: true
        image: prom/statsd-exporter:v0.23.1
        name: statsd-exporter
        lifecycle:
          preStop:
            exec:
              command: ["sleep", "240"]
        livenessProbe:
          failureThreshold: 1
          exec:
           command:
            - wget
            - --no-verbose
            - --tries=1 
            - --spider 
            - http://localhost:9102/metrics
          initialDelaySeconds: 90
          periodSeconds: 60
          successThreshold: 1
          timeoutSeconds: 10
        readinessProbe:
          failureThreshold: 1
          exec:
           command:
            - wget
            - --no-verbose
            - --tries=1 
            - --spider 
            - http://localhost:9102/metrics
          initialDelaySeconds: 5
          periodSeconds: 3
          successThreshold: 1
          timeoutSeconds: 10

        ports:
        - containerPort: 9125
          protocol: UDP
        - containerPort: 9125
          protocol: TCP
        - containerPort: 9102
          protocol: TCP

        resources:
          requests:
            cpu: 200m
            memory: 200Mi
      terminationGracePeriodSeconds: 300  
      volumes:
        - name: statsd-yaml
          configMap:
            name: statsd
---
apiVersion: v1
kind: Service
metadata:
  name: statsd-exporter
  namespace: <namespace>
spec:
  ports:
  - name: ingress-tcp
    port: 9125
    protocol: TCP
    targetPort: 9125
  - name: ingress-udp
    port: 9125
    protocol: UDP
    targetPort: 9125
  selector:
    app: statsd-exporter
  type: ClusterIP
---
kind: ConfigMap
metadata:
  name: statsd
  namespace: <namespace>
apiVersion: v1
data:
  statsd.yml: |
    defaults:
        # By default all histogram use following buckets
        timer_type: histogram
        ttl: 20m
        buckets: [5, 30, 50, 80, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000]
    mappings:
      # Example of a particular metric using probably different bucket(not in this case, having just for sample)
    - match: sample_metrics.*
      timer_type: histogram
      buckets: [5, 30, 50, 80, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000, 15000, 25000, 35000, 45000, 60000]
      name: "sample_metrics"