kube-prometheus 部署指南
1、介紹：
略
2、版本：
Kubernetes 版本：1.16.2
Docker 版本：18.09.9
Kube-prometheus 版本：0.2.0
3、下載 kube-prometheus 鏡像部署文件
前往 github 上下載 0.2.0 版本的壓縮包
4、進入源碼的 manifests 文件夾
cd kube-prometheus/manifests/
5、修改源碼文件，將 service 以 NodePort 的方式提供服務
vim prometheus-service.yaml
apiVersion: v1
kind: Service
metadata:
??labels:
????prometheus: k8s
??name: prometheus-k8s
??namespace: monitoring
spec:
??type: NodePort
??ports:
??- name: http
????port: 9090
????targetPort: web
????nodePort: 9090
??selector:
????app: prometheus
????prometheus: k8s
??sessionAffinity: ClientIP
vim alertmanager-service.yaml
apiVersion: v1
kind: Service
metadata:
??labels:
????app: grafana
??name: grafana
??namespace: monitoring
spec:
??type: NodePort
??ports:
??- name: http
????port: 3000
????targetPort: http
????nodePort: 3000
??selector:
????app: grafana
vim prometheus-service.yaml
apiVersion: v1
kind: Service
metadata:
??labels:
????alertmanager: main
??name: alertmanager-main
??namespace: monitoring
spec:
??type: NodePort
??ports:
??- name: web
????port: 9093
????targetPort: web
????nodePort: 9093
??selector:
????alertmanager: main
????app: alertmanager
??sessionAffinity: ClientIP
6、修改配置文件設置 prometheus 歷史數據保存 15 天，并且使用 ceph 設置數據持久化
vim 00StorageClass.yaml
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
??name: cephfs
provisioner: ceph.com/cephfs
parameters:
????monitors: 192.168.10.101:6789,192.168.10.102:6789,192.168.10.103:6789
????adminId: admin
????adminSecretName: ceph-admin-secret
????adminSecretNamespace: "kube-system"
????claimRoot: /volumes/kubernetes
修改prometheus部署文件
vim prometheus-prometheus.yaml
apiVersion: monitoring.coreos.com/v1
kind: Prometheus
metadata:
??labels:
????prometheus: k8s
??name: k8s
??namespace: monitoring
spec:
??alerting:
????alertmanagers:
????- name: alertmanager-main
??????namespace: monitoring
??????port: web
??baseImage: quay.io/prometheus/prometheus
??nodeSelector:
????kubernetes.io/os: linux
??podMonitorSelector: {}
??replicas: 2
??retention: 15d #設置歷史數據保存15天
??resources:
????requests:
??????memory: 400Mi
??ruleSelector:
????matchLabels:
??????prometheus: k8s
??????role: alert-rules
??securityContext:
????fsGroup: 0 #一定修改不然會有權限錯誤
????runAsNonRoot: false#一定修改不然會有權限錯誤
????runAsUser: 0#一定修改不然會有權限錯誤
??serviceAccountName: prometheus-k8s
??serviceMonitorNamespaceSelector: {}
??serviceMonitorSelector: {}
??version: v2.11.0
??storage:
????volumeClaimTemplate:
??????spec:
????????storageClassName: cephfs
????????resources:
??????????requests:
????????????storage: 20Gi
7、設置 grafana 持久化
先創建pvc文件
vim 00grafana-pvc.yaml
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
??name: grafana
namespace: monitoring ?#指定monitoring
spec:
storageClassName: cephfs #指定StorageClass
??accessModes:
????- ReadWriteOnce
??resources:
????requests:
??????storage: 10Gi
8、監控 kube-controller-manager 和 kube-scheduler 這兩個系統組件
創建兩個 service 對應上述系統組件
vim?00kube-scheduler-service.yaml
apiVersion: v1
kind: Service
metadata:
??namespace: kube-system
??name: kube-scheduler
??labels:
????k8s-app: kube-scheduler
spec:
??selector:
????component: kube-scheduler
??ports:
??- name: http-metrics
????port: 10251
????targetPort: 10251
????protocol: TCP
vim?00kube-controller-manager-service.yaml
apiVersion: v1
kind: Service
metadata:
??namespace: kube-system
??name: kube-controller-manager
??labels:
????k8s-app: kube-controller-manager
spec:
??selector:
????component: kube-controller-manager
??ports:
??- name: http-metrics
????port: 10252
????targetPort: 10252
????protocol: TCP
修改grafana部署文件
- name: grafana-storage
????????persistentVolumeClaim:
??????????claimName: grafana
9、現在就可以 apply 文件了
kubectl apply
-
f .
