k8s 部署 prometheus

创建namespace

prometheus-namespace.yaml

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apiVersion: v1
kind: Namespace
metadata:
  name: ns-prometheus

拉取镜像

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docker pull swr.cn-north-4.myhuaweicloud.com/ddn-k8s/quay.io/prometheus/prometheus:v2.54.0

prometheus配置文件configmap

prometheus-configmap.yaml

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apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus-config
  namespace: ns-prometheus
data:
  prometheus.yml: |-
    # Prometheus配置内容
    global:
      scrape_interval: 15s
      evaluation_interval: 15s
    scrape_configs:
      - job_name: 'prometheus'
        static_configs:
          - targets: ['localhost:9090', '10.0.2.13:31672']

localhost:9090为prometheus服务自己本身的metrics；10.0.2.13:31672为node exporter的metrics。targets是一个数组可以增加多个。

prometheus 的 Deployment

prometheus-deployment.yaml

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apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus
  namespace: ns-prometheus
spec:
  replicas: 1
  selector:
    matchLabels:
      name: prometheus
  template:
    metadata:
      labels:
        name: prometheus
    spec:
      # hostNetwork: true
      containers:
      - name: prometheus
        image: swr.cn-north-4.myhuaweicloud.com/ddn-k8s/quay.io/prometheus/prometheus:v2.54.0
        args:
        - --config.file=/etc/prometheus/prometheus.yml
        ports:
        - containerPort: 9090
        volumeMounts:
          - mountPath: /etc/prometheus
            name: prometheus-config
      volumes:
      - name: prometheus-config
        configMap:
          name: prometheus-config

使用Service模式部署可以注释hostNetwork: true

prometheus 的 Service

prometheus-service.yaml

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apiVersion: v1
kind: Service
metadata:
  name: prometheus-service
  namespace: ns-prometheus
spec:
  selector:
    name: prometheus
  ports:
    - protocol: TCP
      port: 9090
      targetPort: 9090
      nodePort: 30090
  type: NodePort

启动

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kubectl apply -f prometheus-namespace.yaml
kubectl apply -f prometheus-configmap.yaml
kubectl apply -f .

查看

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kubectl get pod -n ns-prometheus
kubectl get svc -n ns-prometheus

访问

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http://10.0.2.12:30090/

10.0.2.12为宿主机ip，30090为Service映射的port