kubernetes 安装 Prometheus + Grafana

Posted 2021-10-16 Linux运维交流社区

kubernetes 安装 Prometheus + Grafana

kubernetes install Prometheus + Grafana

官网

Official website

https://prometheus.io/

GitHub

GitHub

https://github.com/coreos/kube-prometheus

组件说明

Component description

MetricServer：是kubernetes集群资源使用情况的聚合器，收集数据给kubernetes集群内使用，如 kubectl,hpa,scheduler等。

PrometheusOperator：是一个系统监测和警报工具箱，用来存储监控数据。

NodeExporter：用于各node的关键度量指标状态数据。

KubeStateMetrics：收集kubernetes集群内资源对象数 据，制定告警规则。

Prometheus：采用pull方式收集apiserver，scheduler，controller-manager，kubelet组件数 据，通过http协议传输。

Grafana：是可视化数据统计和监控平台。

MetricServer: It is an aggregator of the resource usage of the kubernetes cluster, collecting data for use in the kubernetes cluster, such as kubectl, hpa, scheduler, etc.

PrometheusOperator: is a system monitoring and alerting toolbox used to store monitoring data.

NodeExporter: Used for the key metric status data of each node.

KubeStateMetrics: Collect resource object data in the kubernetes cluster and formulate alarm rules.

Prometheus: collect data from apiserver, scheduler, controller-manager, and kubelet components in a pull mode, and transmit it through the http protocol.

Grafana: It is a platform for visual data statistics and monitoring.

安装

Install

配置Google上网环境下的docker，docker会去外网进行下载部分镜像

Configure docker in Google's Internet environment, docker will go to the external network to download part of the image

sudo mkdir -p /etc/systemd/system/docker.service.d
sudo touch /etc/systemd/system/docker.service.d/proxy.conf

[root@k8s-master-node1 ~]# cat /etc/systemd/system/docker.service.d/proxy.conf
[Service]
Environment="HTTP_PROXY=http://192.168.1.6:7890/" 
Environment="HTTPS_PROXY=http://192.168.1.6:7890/" 
Environment="NO_PROXY=localhost,127.0.0.1,.example.com"

dockerd代理的修改比较特殊，它实际上是改systemd的配置，因此需要重载systemd并重启dockerd才能生效。

The modification of the dockerd agent is quite special. It actually changes the configuration of systemd, so systemd needs to be reloaded and dockerd restarted to take effect.

sudo systemctl daemon-reload
sudo systemctl restart docker

下载

download

[root@k8s-master-node1 ~]# git clone https://github.com/coreos/kube-prometheus.git
Cloning into 'kube-prometheus'...
remote: Enumerating objects: 13409, done.
remote: Counting objects: 100% (1908/1908), done.
remote: Compressing objects: 100% (801/801), done.
remote: Total 13409 (delta 1184), reused 1526 (delta 947), pack-reused 11501
Receiving objects: 100% (13409/13409), 6.65 MiB | 5.21 MiB/s, done.
Resolving deltas: 100% (8313/8313), done.
[root@k8s-master-node1 ~]# 
[root@k8s-master-node1 ~]# cd kube-prometheus/manifests
[root@k8s-master-node1 ~/kube-prometheus/manifests]#

修改 grafana-service.yaml 文件，使用 nodepode 方式访问 grafana：

Modify the grafana-service.yaml file and use nodepode to access grafana:

[root@k8s-master-node1 ~/kube-prometheus/manifests]# cat grafana-service.yaml
apiVersion: v1
kind: Service
metadata:
  labels:
    app.kubernetes.io/component: grafana
    app.kubernetes.io/name: grafana
    app.kubernetes.io/part-of: kube-prometheus
    app.kubernetes.io/version: 8.1.3
  name: grafana
  namespace: monitoring
spec:
  type: NodePort
  ports:
  - name: http
    port: 3000
    targetPort: http
    nodePort: 31100
  selector:
    app.kubernetes.io/component: grafana
    app.kubernetes.io/name: grafana
    app.kubernetes.io/part-of: kube-prometheus

修改 prometheus-service.yaml，改为 nodepode：

Modify prometheus-service.yaml to nodepode:

[root@k8s-master-node1 ~/kube-prometheus/manifests]# cat prometheus-service.yaml
apiVersion: v1
kind: Service
metadata:
  labels:
    app.kubernetes.io/component: prometheus
    app.kubernetes.io/name: prometheus
    app.kubernetes.io/part-of: kube-prometheus
    app.kubernetes.io/version: 2.30.0
    prometheus: k8s
  name: prometheus-k8s
  namespace: monitoring
spec:
  type: NodePort
  ports:
  - name: web
    port: 9090
    targetPort: web
    nodePort: 31200
  - name: reloader-web
    port: 8080
    targetPort: reloader-web
    nodePort: 31300
  selector:
    app: prometheus
    app.kubernetes.io/component: prometheus
    app.kubernetes.io/name: prometheus
    app.kubernetes.io/part-of: kube-prometheus
    prometheus: k8s
  sessionAffinity: ClientIP

修改 alertmanager-service.yaml，改为 nodepode

Modify alertmanager-service.yaml to nodepode

[root@k8s-master-node1 ~/kube-prometheus/manifests]# cat alertmanager-service.yaml 
apiVersion: v1
kind: Service
metadata:
  labels:
    alertmanager: main
    app.kubernetes.io/component: alert-router
    app.kubernetes.io/name: alertmanager
    app.kubernetes.io/part-of: kube-prometheus
    app.kubernetes.io/version: 0.23.0
  name: alertmanager-main
  namespace: monitoring
spec:
  type: NodePort
  ports:
  - name: web
    port: 9093
    targetPort: web
    nodePort: 31400
  - name: reloader-web
    port: 8080
    targetPort: reloader-web
    nodePort: 31500
  selector:
    alertmanager: main
    app: alertmanager
    app.kubernetes.io/component: alert-router
    app.kubernetes.io/name: alertmanager
    app.kubernetes.io/part-of: kube-prometheus
  sessionAffinity: ClientIP
[root@k8s-master-node1 ~/kube-prometheus/manifests]#

创建名称空间和CRD

Create namespace and CRD

[root@k8s-master-node1 ~/kube-prometheus]# kubectl create -f /root/kube-prometheus/manifests/setup
namespace/monitoring created
customresourcedefinition.apiextensions.k8s.io/alertmanagerconfigs.monitoring.coreos.com created
customresourcedefinition.apiextensions.k8s.io/alertmanagers.monitoring.coreos.com created
customresourcedefinition.apiextensions.k8s.io/podmonitors.monitoring.coreos.com created
customresourcedefinition.apiextensions.k8s.io/probes.monitoring.coreos.com created
customresourcedefinition.apiextensions.k8s.io/prometheuses.monitoring.coreos.com created
customresourcedefinition.apiextensions.k8s.io/prometheusrules.monitoring.coreos.com created
customresourcedefinition.apiextensions.k8s.io/servicemonitors.monitoring.coreos.com created
customresourcedefinition.apiextensions.k8s.io/thanosrulers.monitoring.coreos.com created
clusterrole.rbac.authorization.k8s.io/prometheus-operator created
clusterrolebinding.rbac.authorization.k8s.io/prometheus-operator created
deployment.apps/prometheus-operator created
service/prometheus-operator created
serviceaccount/prometheus-operator created

等待资源可用后，安装

After waiting for resources to be available, install

[root@k8s-master-node1 ~/kube-prometheus]# 
[root@k8s-master-node1 ~/kube-prometheus]# 
[root@k8s-master-node1 ~/kube-prometheus]# kubectl create -f /root/kube-prometheus/manifests/




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[root@k8s-master-node1 ~/kube-prometheus]#

访问 Prometheus

Visit Prometheus

http://192.168.1.10:31200/targets

访问 Grafana

Visit Grafana

http://192.168.1.10:31100/

访问报警平台 AlertManager

Visit the alert platform AlertManager

http://192.168.1.10:31400/#/status