# my global config
global:
  scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).
 
# Alertmanager configuration
alerting:
  alertmanagers:
    - static_configs:
        - targets:
          # - alertmanager:9093
 
# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
 
# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'
    static_configs:
      - targets: ['localhost:9090']
 
  - job_name: 'docker'
    static_configs:
      - targets: ['foo.host:9323']
      - targets: ['foo.host:9323']
      - targets: ['foo.host:9323']
 
  - job_name: 'spring-boot-master'
    metrics_path: 'actuator/prometheus'
    static_configs:
      - targets: ['spring-foo-host:8080']
 
  - job_name: 'workers'
    metrics_path: '/metrics'
    static_configs:
      - targets: ['bar1-host:8080']
      - targets: ['bar2-host:8080']
      - targets: ['bar3-host:8080']      
    basic_auth:
      username: 'user'
      password: 'pass'

apiVersion: v1
kind: Namespace
metadata:
  name: my-tools
---
# spring boot app
apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus
  namespace: my-tools
spec:
  replicas: 1
  selector: #it defines how the Deployment finds which Pods to manage.
    matchLabels: 
      app: prometheus
  template: # pod template
    metadata:
      labels:
        app: prometheus
    spec:
      # prefer to be deployed only on a specific node (because volume not shared between node )
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: prometheus
                    operator: In
                    values:
                    - "true"
      containers:
        - image: prom/prometheus:v2.24.1
          name: prometheus
          args: ["--web.enable-lifecycle", "--config.file=/etc/prometheus/prometheus-conf.yml"]
          imagePullPolicy: IfNotPresent
          volumeMounts:
            - name: prometheus-config
              mountPath: /etc/prometheus
            - name: prometheus-data
              mountPath: /prometheus
      volumes:
        - name: prometheus-config
          hostPath:
             path: /var/prometheus/config
        - name: prometheus-data
          hostPath:
             path: /var/prometheus/data # the folder rights may make the app fails to start. Try with chmod u=rwx,g=rwx,o=rx -R data
 
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: prometheus
  name: prometheus
  namespace: my-tools
spec:
  type: NodePort
  ports:
    - name: "prom-ui"
      targetPort: 9090 # port of the running app
      port: 9090 # Cluster IP Port
      nodePort: 31000 # External port (has to be unique in the cluster). By default Kubernetes allocates  a node port from a range (default: 30000-32767)
  selector:
    app: prometheus
---

level=error ts=2021-01-28T11:17:23.696Z caller=query_logger.go:87 component=activeQueryTracker msg="Error opening query log file" file=data/queries.active err="open data/queries.active: no such file or directory"