旺道网站排名优化,网站建设找刘贺稳营销专家,小程序分销系统开发,建设一个百度百科类网站文章目录 1. Metrics Server 插件1.1 编排文件1.2 安装 2.top命令使用示例2.1 查看pod资源2.2 查看node资源2.3 简单的监控页面 前言#xff1a; 使用top命令查看需k8s使用资源信息#xff0c;需要安装Metrics-Server 插件。 注意#xff1a;这个kube-state-metrics是不一样… 文章目录 1. Metrics Server 插件1.1 编排文件1.2 安装 2.top命令使用示例2.1 查看pod资源2.2 查看node资源2.3 简单的监控页面 前言 使用top命令查看需k8s使用资源信息需要安装Metrics-Server 插件。 注意这个kube-state-metrics是不一样的。 1. Metrics Server 插件 参考文档https://github.com/kubernetes-sigs/metrics-server 注意官网有坑不要按上边的来 1.1 编排文件
下载地址: https://github.com/kubernetes-sigs/metrics-server/releases
选择合适的版本下载
镜像准备 默认的 k8s.gcr.io的镜像下载不了我们选择科学上网或下载阿里云镜像 registry.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.6
修改yaml文件 修改如下三处 添加command必要添加limit非必要修改镜像非必要 components.yaml 文件修改如下
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:name: system:aggregated-metrics-readerlabels:rbac.authorization.k8s.io/aggregate-to-view: truerbac.authorization.k8s.io/aggregate-to-edit: truerbac.authorization.k8s.io/aggregate-to-admin: true
rules:
- apiGroups: [metrics.k8s.io]resources: [pods, nodes]verbs: [get, list, watch]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:name: metrics-server:system:auth-delegator
roleRef:apiGroup: rbac.authorization.k8s.iokind: ClusterRolename: system:auth-delegator
subjects:
- kind: ServiceAccountname: metrics-servernamespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:name: metrics-server-auth-readernamespace: kube-system
roleRef:apiGroup: rbac.authorization.k8s.iokind: Rolename: extension-apiserver-authentication-reader
subjects:
- kind: ServiceAccountname: metrics-servernamespace: kube-system
---
apiVersion: apiregistration.k8s.io/v1beta1
kind: APIService
metadata:name: v1beta1.metrics.k8s.io
spec:service:name: metrics-servernamespace: kube-systemgroup: metrics.k8s.ioversion: v1beta1insecureSkipTLSVerify: truegroupPriorityMinimum: 100versionPriority: 100
---
apiVersion: v1
kind: ServiceAccount
metadata:name: metrics-servernamespace: kube-system
---
apiVersion: apps/v1
kind: Deployment
metadata:name: metrics-servernamespace: kube-systemlabels:k8s-app: metrics-server
spec:selector:matchLabels:k8s-app: metrics-servertemplate:metadata:name: metrics-serverlabels:k8s-app: metrics-serverspec:serviceAccountName: metrics-servervolumes:# mount in tmp so we can safely use from-scratch images and/or read-only containers- name: tmp-diremptyDir: {}containers:- name: metrics-server#image: k8s.gcr.io/metrics-server-amd64:v0.3.6image: registry.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.6imagePullPolicy: IfNotPresentargs:- --cert-dir/tmp- --secure-port4443command:- /metrics-server- --kubelet-insecure-tls- --kubelet-preferred-address-typesInternalDNS,InternalIP,ExternalDNS,ExternalIP,Hostnameports:- name: main-portcontainerPort: 4443protocol: TCPsecurityContext:readOnlyRootFilesystem: truerunAsNonRoot: truerunAsUser: 1000volumeMounts:- name: tmp-dirmountPath: /tmpresources:limits:cpu: 300mmemory: 200Mirequests:cpu: 200mmemory: 100MinodeSelector:kubernetes.io/os: linuxkubernetes.io/arch: amd64
---
apiVersion: v1
kind: Service
metadata:name: metrics-servernamespace: kube-systemlabels:kubernetes.io/name: Metrics-serverkubernetes.io/cluster-service: true
spec:selector:k8s-app: metrics-serverports:- port: 443protocol: TCPtargetPort: main-port
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:name: system:metrics-server
rules:
- apiGroups:- resources:- pods- nodes- nodes/stats- namespaces- configmapsverbs:- get- list- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:name: system:metrics-server
roleRef:apiGroup: rbac.authorization.k8s.iokind: ClusterRolename: system:metrics-server
subjects:
- kind: ServiceAccountname: metrics-servernamespace: kube-system1.2 安装
安装
kubectl create -f ./components.yaml查看
pod/metrics-server-6cbcc95697-xckv6 1/1 Running 0 6h26mservice/metrics-server ClusterIP 10.1.113.17 none 443/TCP 6h26mdeployment.apps/metrics-server 1/1 1 1 6h26mreplicaset.apps/metrics-server-6cbcc95697 1 1 1 6h26m
对比一下我们这钱安装的kube-state-metrics
[rootIoT-M01 yml]# kubectl get all -n kube-system |grep metrics
pod/kube-state-metrics-6497487656-4p9w6 1/1 Running 1 13d
pod/metrics-server-6cbcc95697-xckv6 1/1 Running 0 13mservice/kube-state-metrics ClusterIP None none 8080/TCP,8081/TCP 13d
service/metrics-server ClusterIP 10.1.113.17 none 443/TCP 13mdeployment.apps/kube-state-metrics 1/1 1 1 13ddeployment.apps/metrics-server 1/1 1 1 13m
replicaset.apps/kube-state-metrics-6497487656 1 1 1 13d
replicaset.apps/kube-state-metrics-74b87488f 0 0 0 13dreplicaset.apps/metrics-server-6cbcc95697 1 1 1 13m可以看到之前监控启动的kube-state-metrics和本次安装的metrics-server并不是一套服务 。 一个使用了8080端口一个使用了安全端口443。 虽然镜像不一样但都是收集k8s资源信息的不知道是不是用一个就可以没有测试。 2.top命令使用示例
2.1 查看pod资源
[rootdevops-master ~]# kubectl top pod -n iot-test-03
NAME CPU(cores) MEMORY(bytes)
apigw-iot-85584cf578-ffr9d 1m 35Mi
apigw-iot-85584cf578-j5bg9 1m 43Mi
apigw-iot-85584cf578-vs4f6 1m 45Mi
emqx-iot-0 2m 173Mi
emqx-iot-1 3m 143Mi
emqx-iot-2 3m 139Mi
monitor-iot-67857b5d65-5gwxd 1m 40Mi
monitor-iot-67857b5d65-p2gjx 1m 47Mi
monitor-iot-67857b5d65-vgl92 1m 33Mi
msgroute-iot-6c4d676c5d-6n6jp 1m 11Mi
msgroute-iot-6c4d676c5d-7grgx 1m 17Mi
msgroute-iot-6c4d676c5d-q4k87 1m 14Mi
mysql-iot-8dflr 1m 251Mi
redis-iot-58498b5dc8-j5w8g 2m 13Mi
remotectl-iot-74d59ff47-6r9fd 1m 23Mi
remotectl-iot-74d59ff47-r42gn 1m 27Mi
remotectl-iot-74d59ff47-s2c7k 1m 33Mi
remoteops-iot-679465fd48-kn2l8 1m 28Mi
remoteops-iot-679465fd48-sz8nx 1m 16Mi
remoteops-iot-679465fd48-vsj8v 1m 23Mi
web-iot-ffc9b5fff-4ls9k 0m 9Mi
web-iot-ffc9b5fff-5d457 0m 10Mi
web-iot-ffc9b5fff-g54rx 0m 5Mi
2.2 查看node资源
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
b9-node02 118m 5% 1205Mi 32%
b9-node3 80m 2% 2321Mi 14%
devopsnode01 186m 2% 6569Mi 41%
es-node32cuogf 325m 2% 6866Mi 21%
master01 244m 3% 17915Mi 56%2.3 简单的监控页面 注意此处仅是一个示例不具有生产意义真实场景还是要接正经监控的 写一个脚本将将数据写入nginx页面
#!/bin/bash
for ((i0;i58;i))
dokubectl top -n $1 pod /usr/local/nginx/build/$1.txtecho ----------date------------- /usr/local/nginx/build/$1.txtdate %Y-%m-%d %H:%M:%S /usr/local/nginx/build/$1.txtsleep 1
done设置定时任务
* * * * * bash /usr/local/script/nginx/kube-top.sh crust-framework查看结果
