# 1.在monitoring名稱空間部署consul服務
cat > consul.yaml << EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: consul
  namespace: monitoring
  labels:
    app: consul
spec:
  selector:
    matchLabels:
      app: consul
  replicas: 1
  template:
    metadata:
      name: consul
      labels:
        app: consul
    spec:
      containers:
        - name: consul
          image: consul:latest
          ports:
            - containerPort: 8500
              protocol: TCP
          imagePullPolicy: IfNotPresent
---
apiVersion: v1
kind: Service
metadata:
  name: consul
  namespace: monitoring
  labels:
    app: consul
spec: 
  selector:
    app: consul
  ports:
    - name: consul
      protocol: TCP
      port: 8500
      targetPort: 8500
EOF

kubectl apply -f consul.yaml

# 2.編寫prometheus-additional並在monitoring名稱空間建立secret資源
cat > prometheus-additional.yaml << EOF
- job_name: consul
  consul_sd_configs:
  - server: consul.monitoring.svc:8500
EOF

kubectl create secret generic additional-configs --from-file=prometheus-additional.yaml -n monitoring

# 3.手動修改kube-prometheus/manifests中的prometheus-prometheus.yaml檔案增加additionalScrapeConfigs配置段
vim kube-prometheus/manifests/prometheus-prometheus.yaml

  additionalScrapeConfigs:
    name: additional-configs
    key: prometheus-additional.yaml
	
# 並重新應用prometheus-prometheus.yaml檔案
kubectl apply -f kube-prometheus/manifests/prometheus-prometheus.yaml