K8s搭建prometheus

Github地址：https://github.com/prometheus-operator/kube-prometheus

根据需要K8s版本号下载

unzip kube-prometheus-release-0.8.zip

cd kube-prometheus-release-0.8

#根据下方命令安装
kubectl create -f manifests/setup

until kubectl get servicemonitors --all-namespaces ; do date; sleep 1; echo ""; done

kubectl create -f manifests/

#如果镜像拉取缓慢报错
#例：
kubectl describe pods -n monitoring kube-state-metrics-76f6cb7996-zxxrj
Failed to pull image "k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.0.0": rpc error: code = Unknown desc = Error response from daemon: Get "https://k8s.gcr.io/v2/": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

#修改镜像
cd manifests/

vim kube-state-metrics-deployment.yaml
 image: k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.0.0

改为 image：bitnami/kube-state-metrics:2.0.0

#如果有其他拉取镜像失败使用相同的方法

进入docker.hub地址：https://hub.docker.com

搜索镜像：

等待所有pod的启动

kubectl get service -n monitoring   #查看端口信息

#这个时候需要将pod的端口映射出来
cd manifests

vim alertmanager-service.yaml 
spec:
  ports:
  - name: web
    port: 9093
    targetPort: web
  type: NodePort          #添加这行nodeport
  selector:
    alertmanager: main

#重启
kubectl apply -f alertmanager-service.yaml

#修改grafana
vim grafana-service.yaml
#和上面的相同添加nodeport
kubectl apply -f grafana-service.yaml

#修改prometheus
vim prometheus-service.yaml
#和上面的相同添加nodeport
kubectl apply -f prometheus-service.yaml

kubectl get service -n monitoring
NAME                    TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
alertmanager-main       NodePort    10.105.176.221   <none>        9093:30864/TCP               43m
alertmanager-operated   ClusterIP   None             <none>        9093/TCP,9094/TCP,9094/UDP   43m
blackbox-exporter       ClusterIP   10.103.217.46    <none>        9115/TCP,19115/TCP           43m
grafana                 NodePort    10.106.166.254   <none>        3000:30058/TCP               43m
kube-state-metrics      ClusterIP   None             <none>        8443/TCP,9443/TCP            43m
node-exporter           ClusterIP   None             <none>        9100/TCP                     43m
prometheus-adapter      ClusterIP   10.108.200.177   <none>        443/TCP                      43m
prometheus-k8s          NodePort    10.109.3.154     <none>        9090:30795/TCP               43m
prometheus-operated     ClusterIP   None             <none>        9090/TCP                     43m
prometheus-operator     ClusterIP   None             <none>        8443/TCP                     44m

查看端口信息并访问grafana 
192.168.11.11:30058  #默认admin admin

#默认已经添加了很多图片可以点击查看