Playing with Prometheus

kube-prometheus.yaml

# Namespace
---
apiVersion: v1
kind: Namespace
metadata:
  name: monitoring

# ConfigMap
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-config
  namespace: monitoring
data:
  prometheus.yml: |
    global:
      scrape_interval: 15s
      scrape_timeout: 5s
    scrape_configs:
      # - job_name: k8s-nodes
      #   kubernetes_sd_configs:
      #     - role: node
      # - job_name: k8s-service
      #   kubernetes_sd_configs:
      #     - role: service
      # - job_name: k8s-pod
      #   kubernetes_sd_configs:
      #     - role: pod
      - job_name: k8s-endpoints
        kubernetes_sd_configs:
          - role: endpoints
        relabel_configs:
          - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape]
            action: keep
            regex: true
          - source_labels: [__address__, __meta_kubernetes_service_annotation_prometheus_io_port]
            action: replace
            regex: ^(.+)(?::\d+);(\d+)$
            replacement: $1:$2
            target_label: __address__
          - source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name]
            action: replace
            regex: (.+);(.+)
            replacement: $1/$2
            target_label: job
          - action: labelmap
            regex: __meta_kubernetes_service_label_(.+)
      - job_name: 'k8s-api'
        kubernetes_sd_configs:
        - role: endpoints
        scheme: https
        tls_config:
          insecure_skip_verify: true
          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
        relabel_configs:
        - source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
          action: keep
          regex: default;kubernetes;https
      # - job_name: k8s-ingress
      #   kubernetes_sd_configs:
      #     - role: ingress

# Service
---
apiVersion: v1
kind: Service
metadata:
  name: prometheus
  namespace: monitoring
  labels:
    app: prometheus
    component: core
spec:
  type: NodePort
  ports:
    - name: api
      port: 9090
  selector:
    app: prometheus
    component: core

# Deployment
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: prometheus
  namespace: monitoring
  labels:
    app: prometheus
    component: core
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: prometheus
        component: core
    spec:
      containers:
        - name: prometheus
          image: prom/prometheus:v2.0.0
          ports:
            - containerPort: 9090
          volumeMounts:
            - name: config-volume
              mountPath: /etc/prometheus/
      volumes:
        - name: config-volume
          configMap:
            name: prometheus-config

kube-redis.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: redis
  labels:
    app: redis
  annotations:
    prometheus.io/scrape: "true"
    prometheus.io/port: "9121"
spec:
  type: ClusterIP
  selector:
    app: redis
  ports:
    - name: redis
      port: 6379
      targetPort: 6379
    - name: exporter
      port: 9121
      targetPort: 9121

---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: redis
spec:
  template:
    metadata:
      labels:
        app: redis
    spec:
      containers:
        - name: redis
          image: "redis:4.0-alpine"
          ports:
            - containerPort: 6379
        - name: exporter
          image: "oliver006/redis_exporter:v0.14"
          ports:
            - containerPort: 9121