上传文件至 kubernetes-MD
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<h1><center>基于kubeadm部署kubernetes集群</center></h1>
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------
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## 一：环境准备
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三台服务器，一台master，两台node,master节点必须是2核cpu
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| 节点名称 | IP地址 |
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| :------: | :--------: |
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| master | 10.0.0.220 |
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| node-1 | 10.0.0.221 |
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| node-2 | 10.0.0.222 |
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| node-3 | 10.0.0.223 |
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#### 1.所有服务器关闭防火墙和selinux
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```shell
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[root@localhost ~]# systemctl stop firewalld
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[root@localhost ~]# systemctl disable firewalld
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[root@localhost ~]# setenforce 0
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[root@localhost ~]# sed -i '/^SELINUX=/c SELINUX=disabled/' /etc/selinux/config
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[root@localhost ~]# swapoff -a 临时关闭
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[root@localhost ~]# sed -i 's/.*swap.*/#&/' /etc/fstab 永久关闭
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注意：
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关闭所有服务器的交换分区
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所有节点操作
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```
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#### 2.保证yum仓库可用
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```shell
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[root@localhost ~]# yum clean all
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[root@localhost ~]# yum makecache fast
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注意：
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使用国内yum源
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所有节点操作
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```
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#### 3.修改主机名
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```shell
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[root@localhost ~]# hostnamectl set-hostname master
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[root@localhost ~]# hostnamectl set-hostname node-1
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[root@localhost ~]# hostnamectl set-hostname node-2
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[root@localhost ~]# hostnamectl set-hostname node-3
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注意：
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所有节点操作
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```
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#### 4.添加本地解析
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```shell
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[root@master ~]# cat >> /etc/hosts <<eof
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10.0.0.220 master
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10.0.0.221 node-1
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10.0.0.222 node-2
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10.0.0.223 node-3
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eof
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注意：
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所有节点操作
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```
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#### 5.安装容器
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```shell
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[root@master ~]# yum install -y yum-utils device-mapper-persistent-data lvm2
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[root@master ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
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[root@master ~]# yum -y install docker-ce
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[root@master ~]# systemctl start docker
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[root@master ~]# systemctl enable docker
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注意：
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所有节点操作
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```
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#### 6.安装kubeadm和kubelet
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```shell
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[root@master ~]# cat >> /etc/yum.repos.d/kubernetes.repo <<eof
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[kubernetes]
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name=Kubernetes
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baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
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enabled=1
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gpgcheck=0
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repo_gpgcheck=0
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gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
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eof
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[root@master ~]# yum -y install kubeadm kubelet kubectl ipvsadm
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注意：
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所有节点操作
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这里安装的是最新版本（也可以指定版本号：kubeadm-1.19.4）
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```
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#### 7.配置kubelet的cgroups
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```shell
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[root@master ~]# cat >/etc/sysconfig/kubelet<<EOF
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KUBELET_EXTRA_ARGS="--cgroup-driver=cgroupfs --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google_containers/pause-amd64:3.1"
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EOF
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k8s.gcr.io/pause:3.6
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```
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#### 8.加载内核模块
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```shell
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[root@master ~]# modprobe br_netfilter
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注意：
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所有节点操作
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```
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#### 9.修改内核参数
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```shell
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[root@master ~]# cat >> /etc/sysctl.conf <<eof
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net.bridge.bridge-nf-call-ip6tables = 1
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net.bridge.bridge-nf-call-iptables = 1
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vm.swappiness=0
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eof
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[root@master ~]# sysctl -p
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net.bridge.bridge-nf-call-ip6tables = 1
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net.bridge.bridge-nf-call-iptables = 1
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vm.swappiness = 0
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注意：
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所有节点操作
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```
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## 二：部署Kubernetes
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#### 1.镜像下载
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```shell
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https://www.xingdiancloud.cn/index.php/s/6GyinxZwSRemHPz
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注意：
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下载后上传到所有节点
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```
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#### 2.镜像导入
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```shell
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[root@master ~]# cat image_load.sh
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#!/bin/bash
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image_path=`pwd`
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for i in `ls "${image_path}" | grep tar`
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do
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docker load < $i
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done
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[root@master ~]# bash image_load.sh
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注意：
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所有节点操作
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```
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#### 3.master节点初始化
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```shell
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[root@master ~]# kubeadm init --kubernetes-version=1.23.1 --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=10.0.0.220
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Your Kubernetes control-plane has initialized successfully!
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To start using your cluster, you need to run the following as a regular user:
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mkdir -p $HOME/.kube
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sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
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sudo chown $(id -u):$(id -g) $HOME/.kube/config
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Alternatively, if you are the root user, you can run:
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export KUBECONFIG=/etc/kubernetes/admin.conf
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You should now deploy a pod network to the cluster.
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Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
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https://kubernetes.io/docs/concepts/cluster-administration/addons/
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Then you can join any number of worker nodes by running the following on each as root:
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kubeadm join 10.0.0.220:6443 --token mzrm3c.u9mpt80rddmjvd3g \
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--discovery-token-ca-cert-hash sha256:fec53dfeacc5187d3f0e3998d65bd3e303fa64acd5156192240728567659bf4a
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```
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#### 4.安装pod插件
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```shell
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[root@master ~]# wget http://www.xingdiancloud.cn:92/index.php/s/3Ad7aTxqPPja24M/download/flannel.yaml
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[root@master ~]# kubectl create -f flannel.yaml
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```
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#### 5.将node加入工作节点
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```shell
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[root@node-1 ~]# kubeadm join 10.0.0.220:6443 --token mzrm3c.u9mpt80rddmjvd3g --discovery-token-ca-cert-hash sha256:fec53dfeacc5187d3f0e3998d65bd3e303fa64acd5156192240728567659bf4a
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注意：
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这里使用的是master初始化产生的token
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这里的token时间长了会改变，需要使用命令获取，见下期内容
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没有记录集群 join 命令的可以通过以下方式重新获取:
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kubeadm token create --print-join-command --ttl=0
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```
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#### 6.master节点查看集群状态
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```shell
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[root@master ~]# kubectl get nodes
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NAME STATUS ROLES AGE VERSION
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master Ready control-plane,master 26m v1.23.1
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node-1 Ready <none> 4m45s v1.23.1
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node-2 Ready <none> 4m40s v1.23.1
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node-3 Ready <none> 4m46s v1.23.1
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```
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@ -0,0 +1,953 @@
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<h1><center>基于kubeadm部署kubernetes集群</center></h1>
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------
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## 一：环境准备
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三台服务器，一台master，两台node,master节点必须是2核cpu
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| 节点名称 | IP地址 |
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| master | 10.0.0.220 |
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| node-1 | 10.0.0.221 |
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| node-2 | 10.0.0.222 |
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| node-3 | 10.0.0.223 |
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#### 1.所有服务器关闭防火墙和selinux
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```shell
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[root@localhost ~]# systemctl stop firewalld
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[root@localhost ~]# systemctl disable firewalld
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[root@localhost ~]# setenforce 0
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[root@localhost ~]# sed -i '/^SELINUX=/c SELINUX=disabled/' /etc/selinux/config
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[root@localhost ~]# swapoff -a 临时关闭
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[root@localhost ~]# sed -i 's/.*swap.*/#&/' /etc/fstab 永久关闭
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注意：
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关闭所有服务器的交换分区
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所有节点操作
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```
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#### 2.保证yum仓库可用
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```shell
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[root@localhost ~]# yum clean all
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[root@localhost ~]# yum makecache fast
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注意：
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使用国内yum源
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所有节点操作
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```
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#### 3.修改主机名
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```shell
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[root@localhost ~]# hostnamectl set-hostname master
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[root@localhost ~]# hostnamectl set-hostname node-1
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[root@localhost ~]# hostnamectl set-hostname node-2
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[root@localhost ~]# hostnamectl set-hostname node-3
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注意：
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所有节点操作
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```
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#### 4.添加本地解析
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```shell
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[root@master ~]# cat >> /etc/hosts <<eof
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10.0.0.220 master
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10.0.0.221 node-1
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10.0.0.222 node-2
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10.0.0.223 node-3
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eof
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注意：
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所有节点操作
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```
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#### 5.安装容器运行时
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```shell
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第一步：Installing containerd
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链接地址：https://github.com/containerd/containerd/blob/main/docs/getting-started.md
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[root@master ~]# wget https://github.com/containerd/containerd/releases/download/v1.6.8/containerd-1.6.8-linux-amd64.tar.gz
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[root@master ~]# tar xf containerd-1.6.8-linux-amd64.tar.gz
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[root@master ~]# cp bin/* /usr/local/bin
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创建systemctl管理服务启动文件
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/usr/local/lib/systemd/system/containerd.service
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/etc/systemd/system/multi-user.target.wants/containerd.service
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[root@master ~]# cat containerd.service
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# Copyright The containerd Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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[Unit]
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Description=containerd container runtime
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Documentation=https://containerd.io
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After=network.target local-fs.target
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[Service]
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#uncomment to enable the experimental sbservice (sandboxed) version of containerd/cri integration
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#Environment="ENABLE_CRI_SANDBOXES=sandboxed"
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ExecStartPre=-/sbin/modprobe overlay
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ExecStart=/usr/local/bin/containerd
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Type=notify
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Delegate=yes
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KillMode=process
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Restart=always
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RestartSec=5
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# Having non-zero Limit*s causes performance problems due to accounting overhead
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# in the kernel. We recommend using cgroups to do container-local accounting.
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LimitNPROC=infinity
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LimitCORE=infinity
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LimitNOFILE=infinity
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# Comment TasksMax if your systemd version does not supports it.
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# Only systemd 226 and above support this version.
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TasksMax=infinity
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OOMScoreAdjust=-999
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[Install]
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WantedBy=multi-user.target
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[root@master ~]# systemctl daemon-reload
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[root@master ~]# systemctl start containerd
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第二步：Installing runc
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链接地址：https://github.com/opencontainers/runc/releases
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[root@master ~]# wget https://github.com/opencontainers/runc/releases/download/v1.1.4/runc.amd64
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[root@master ~]# install -m 755 runc.amd64 /usr/local/sbin/runc
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第三步：Installing CNI plugins
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链接地址：https://github.com/containernetworking/plugins/releases
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[root@master ~]# wget https://github.com/containernetworking/plugins/releases/download/v1.1.1/cni-plugins-linux-amd64-v1.1.1.tgz
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[root@master ~]# mkdir -p /opt/cni/bin
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[root@master ~]# tar Cxzvf /opt/cni/bin cni-plugins-linux-amd64-v1.1.1.tgz
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./
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./macvlan
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./static
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./vlan
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./portmap
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./host-local
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./vrf
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./bridge
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./tuning
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./firewall
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./host-device
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./sbr
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./loopback
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./dhcp
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./ptp
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./ipvlan
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./bandwidth
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注意：
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所有节点操作
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```
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#### 6.安装kubeadm和kubelet
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||||||
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||||||
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```shell
|
||||||
|
国外仓库：
|
||||||
|
[root@master ~]# cat >> /etc/yum.repos.d/kubernetes.repo <<eof
|
||||||
|
[kubernetes]
|
||||||
|
name=Kubernetes
|
||||||
|
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-\$basearch
|
||||||
|
enabled=1
|
||||||
|
gpgcheck=1
|
||||||
|
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
|
||||||
|
exclude=kubelet kubeadm kubectl
|
||||||
|
eof
|
||||||
|
[root@master ~]# yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
|
||||||
|
|
||||||
|
国内仓库：
|
||||||
|
[root@master ~]# cat >> /etc/yum.repos.d/kubernetes.repo <<eof
|
||||||
|
[kubernetes]
|
||||||
|
name=Kubernetes
|
||||||
|
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
|
||||||
|
enabled=1
|
||||||
|
gpgcheck=0
|
||||||
|
repo_gpgcheck=0
|
||||||
|
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
|
||||||
|
eof
|
||||||
|
[root@master ~]# yum -y install kubeadm kubelet kubectl ipvsadm
|
||||||
|
注意：
|
||||||
|
所有节点操作
|
||||||
|
这里安装的是最新版本（也可以指定版本号：kubeadm-1.25.0）
|
||||||
|
|
||||||
|
修改kubelet配置
|
||||||
|
[root@master ~]# cat /etc/sysconfig/kubelet
|
||||||
|
KUBELET_EXTRA_ARGS="--pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.6"
|
||||||
|
|
||||||
|
[root@master ~]# cat /etc/systemd/system/multi-user.target.wants/kubelet.service
|
||||||
|
[Unit]
|
||||||
|
Description=kubelet: The Kubernetes Node Agent
|
||||||
|
Documentation=https://kubernetes.io/docs/
|
||||||
|
Wants=network-online.target
|
||||||
|
After=network-online.target
|
||||||
|
|
||||||
|
[Service]
|
||||||
|
ExecStart=/usr/bin/kubelet \
|
||||||
|
--container-runtime=remote \
|
||||||
|
--container-runtime-endpoint=unix:///run//containerd/containerd.sock
|
||||||
|
Restart=always
|
||||||
|
StartLimitInterval=0
|
||||||
|
RestartSec=10
|
||||||
|
|
||||||
|
[Install]
|
||||||
|
WantedBy=multi-user.target
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 7.加载内核模块
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# modprobe br_netfilter
|
||||||
|
注意：
|
||||||
|
所有节点操作
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 8.修改内核参数
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# cat >> /etc/sysctl.conf <<eof
|
||||||
|
net.bridge.bridge-nf-call-ip6tables = 1
|
||||||
|
net.bridge.bridge-nf-call-iptables = 1
|
||||||
|
vm.swappiness=0
|
||||||
|
net.ipv4.ip_forward=1
|
||||||
|
eof
|
||||||
|
[root@master ~]# sysctl -p
|
||||||
|
net.bridge.bridge-nf-call-ip6tables = 1
|
||||||
|
net.bridge.bridge-nf-call-iptables = 1
|
||||||
|
vm.swappiness = 0
|
||||||
|
注意：
|
||||||
|
所有节点操作
|
||||||
|
```
|
||||||
|
|
||||||
|
## 二：部署Kubernetes
|
||||||
|
|
||||||
|
#### 1.镜像下载
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# cat image.sh
|
||||||
|
ctr -n k8s.io i pull -k registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.5.4-0
|
||||||
|
ctr -n k8s.io i pull -k registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:v1.9.3
|
||||||
|
ctr -n k8s.io i pull -k registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.25.0
|
||||||
|
ctr -n k8s.io i pull -k registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.25.0
|
||||||
|
ctr -n k8s.io i pull -k registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.25.0
|
||||||
|
ctr -n k8s.io i pull -k registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.25.0
|
||||||
|
ctr -n k8s.io i pull -k registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.6
|
||||||
|
ctr -n k8s.io i pull -k registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.8
|
||||||
|
|
||||||
|
#flannel镜像
|
||||||
|
ctr -n k8s.io i pull docker.io/rancher/mirrored-flannelcni-flannel-cni-plugin:v1.1.0
|
||||||
|
ctr -n k8s.io i pull docker.io/rancher/mirrored-flannelcni-flannel:v0.19.2
|
||||||
|
|
||||||
|
ctr -n k8s.io i tag registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.5.4-0 registry.k8s.io/etcd:3.5.4-0
|
||||||
|
ctr -n k8s.io i tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:v1.9.3 registry.k8s.io/coredns/coredns:v1.9.3
|
||||||
|
ctr -n k8s.io i tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.8 k8s.gcr.io/pause:3.6
|
||||||
|
ctr -n k8s.io i tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.25.0 registry.k8s.io/kube-proxy:v1.25.0
|
||||||
|
ctr -n k8s.io i tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.25.0 registry.k8s.io/kube-scheduler:v1.25.0
|
||||||
|
ctr -n k8s.io i tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.25.0 registry.k8s.io/kube-controller-manager:v1.25.0
|
||||||
|
ctr -n k8s.io i tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.25.0 registry.k8s.io/kube-apiserver:v1.25.0
|
||||||
|
ctr -n k8s.io i tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.8 registry.k8s.io/pause:3.8
|
||||||
|
[root@master ~]# bash image.sh
|
||||||
|
注意：
|
||||||
|
所有节点操作
|
||||||
|
|
||||||
|
注意：
|
||||||
|
[root@master ~]# kubeadm config images list //获取所需要的镜像
|
||||||
|
registry.k8s.io/kube-apiserver:v1.25.0
|
||||||
|
registry.k8s.io/kube-controller-manager:v1.25.0
|
||||||
|
registry.k8s.io/kube-scheduler:v1.25.0
|
||||||
|
registry.k8s.io/kube-proxy:v1.25.0
|
||||||
|
registry.k8s.io/pause:3.8
|
||||||
|
registry.k8s.io/etcd:3.5.4-0
|
||||||
|
registry.k8s.io/coredns/coredns:v1.9.3
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 3.master节点初始化
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubeadm init --kubernetes-version=1.23.1 --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=10.0.0.220
|
||||||
|
|
||||||
|
Your Kubernetes control-plane has initialized successfully!
|
||||||
|
|
||||||
|
To start using your cluster, you need to run the following as a regular user:
|
||||||
|
|
||||||
|
mkdir -p $HOME/.kube
|
||||||
|
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
|
||||||
|
sudo chown $(id -u):$(id -g) $HOME/.kube/config
|
||||||
|
|
||||||
|
Alternatively, if you are the root user, you can run:
|
||||||
|
|
||||||
|
export KUBECONFIG=/etc/kubernetes/admin.conf
|
||||||
|
|
||||||
|
You should now deploy a pod network to the cluster.
|
||||||
|
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
|
||||||
|
https://kubernetes.io/docs/concepts/cluster-administration/addons/
|
||||||
|
|
||||||
|
Then you can join any number of worker nodes by running the following on each as root:
|
||||||
|
|
||||||
|
kubeadm join 10.0.2.150:6443 --token tlohed.bwgh4tt5erbc2zhg \
|
||||||
|
--discovery-token-ca-cert-hash sha256:9b28238c55bf5b2e5e0d68c6303e50bf6f12e7e07126897c846a4f5328157e16
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 4.安装pod插件
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# vi kube-flannel.yaml
|
||||||
|
---
|
||||||
|
kind: Namespace
|
||||||
|
apiVersion: v1
|
||||||
|
metadata:
|
||||||
|
name: kube-flannel
|
||||||
|
labels:
|
||||||
|
pod-security.kubernetes.io/enforce: privileged
|
||||||
|
---
|
||||||
|
kind: ClusterRole
|
||||||
|
apiVersion: rbac.authorization.k8s.io/v1
|
||||||
|
metadata:
|
||||||
|
name: flannel
|
||||||
|
rules:
|
||||||
|
- apiGroups:
|
||||||
|
- ""
|
||||||
|
resources:
|
||||||
|
- pods
|
||||||
|
verbs:
|
||||||
|
- get
|
||||||
|
- apiGroups:
|
||||||
|
- ""
|
||||||
|
resources:
|
||||||
|
- nodes
|
||||||
|
verbs:
|
||||||
|
- list
|
||||||
|
- watch
|
||||||
|
- apiGroups:
|
||||||
|
- ""
|
||||||
|
resources:
|
||||||
|
- nodes/status
|
||||||
|
verbs:
|
||||||
|
- patch
|
||||||
|
---
|
||||||
|
kind: ClusterRoleBinding
|
||||||
|
apiVersion: rbac.authorization.k8s.io/v1
|
||||||
|
metadata:
|
||||||
|
name: flannel
|
||||||
|
roleRef:
|
||||||
|
apiGroup: rbac.authorization.k8s.io
|
||||||
|
kind: ClusterRole
|
||||||
|
name: flannel
|
||||||
|
subjects:
|
||||||
|
- kind: ServiceAccount
|
||||||
|
name: flannel
|
||||||
|
namespace: kube-flannel
|
||||||
|
---
|
||||||
|
apiVersion: v1
|
||||||
|
kind: ServiceAccount
|
||||||
|
metadata:
|
||||||
|
name: flannel
|
||||||
|
namespace: kube-flannel
|
||||||
|
---
|
||||||
|
kind: ConfigMap
|
||||||
|
apiVersion: v1
|
||||||
|
metadata:
|
||||||
|
name: kube-flannel-cfg
|
||||||
|
namespace: kube-flannel
|
||||||
|
labels:
|
||||||
|
tier: node
|
||||||
|
app: flannel
|
||||||
|
data:
|
||||||
|
cni-conf.json: |
|
||||||
|
{
|
||||||
|
"name": "cbr0",
|
||||||
|
"cniVersion": "0.3.1",
|
||||||
|
"plugins": [
|
||||||
|
{
|
||||||
|
"type": "flannel",
|
||||||
|
"delegate": {
|
||||||
|
"hairpinMode": true,
|
||||||
|
"isDefaultGateway": true
|
||||||
|
}
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"type": "portmap",
|
||||||
|
"capabilities": {
|
||||||
|
"portMappings": true
|
||||||
|
}
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
|
net-conf.json: |
|
||||||
|
{
|
||||||
|
"Network": "10.244.0.0/16",
|
||||||
|
"Backend": {
|
||||||
|
"Type": "vxlan"
|
||||||
|
}
|
||||||
|
}
|
||||||
|
---
|
||||||
|
apiVersion: apps/v1
|
||||||
|
kind: DaemonSet
|
||||||
|
metadata:
|
||||||
|
name: kube-flannel-ds
|
||||||
|
namespace: kube-flannel
|
||||||
|
labels:
|
||||||
|
tier: node
|
||||||
|
app: flannel
|
||||||
|
spec:
|
||||||
|
selector:
|
||||||
|
matchLabels:
|
||||||
|
app: flannel
|
||||||
|
template:
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
tier: node
|
||||||
|
app: flannel
|
||||||
|
spec:
|
||||||
|
affinity:
|
||||||
|
nodeAffinity:
|
||||||
|
requiredDuringSchedulingIgnoredDuringExecution:
|
||||||
|
nodeSelectorTerms:
|
||||||
|
- matchExpressions:
|
||||||
|
- key: kubernetes.io/os
|
||||||
|
operator: In
|
||||||
|
values:
|
||||||
|
- linux
|
||||||
|
hostNetwork: true
|
||||||
|
priorityClassName: system-node-critical
|
||||||
|
tolerations:
|
||||||
|
- operator: Exists
|
||||||
|
effect: NoSchedule
|
||||||
|
serviceAccountName: flannel
|
||||||
|
initContainers:
|
||||||
|
- name: install-cni-plugin
|
||||||
|
#image: flannelcni/flannel-cni-plugin:v1.1.0 for ppc64le and mips64le (dockerhub limitations may apply)
|
||||||
|
image: docker.io/rancher/mirrored-flannelcni-flannel-cni-plugin:v1.1.0
|
||||||
|
command:
|
||||||
|
- cp
|
||||||
|
args:
|
||||||
|
- -f
|
||||||
|
- /flannel
|
||||||
|
- /opt/cni/bin/flannel
|
||||||
|
volumeMounts:
|
||||||
|
- name: cni-plugin
|
||||||
|
mountPath: /opt/cni/bin
|
||||||
|
- name: install-cni
|
||||||
|
#image: flannelcni/flannel:v0.19.2 for ppc64le and mips64le (dockerhub limitations may apply)
|
||||||
|
image: docker.io/rancher/mirrored-flannelcni-flannel:v0.19.2
|
||||||
|
command:
|
||||||
|
- cp
|
||||||
|
args:
|
||||||
|
- -f
|
||||||
|
- /etc/kube-flannel/cni-conf.json
|
||||||
|
- /etc/cni/net.d/10-flannel.conflist
|
||||||
|
volumeMounts:
|
||||||
|
- name: cni
|
||||||
|
mountPath: /etc/cni/net.d
|
||||||
|
- name: flannel-cfg
|
||||||
|
mountPath: /etc/kube-flannel/
|
||||||
|
containers:
|
||||||
|
- name: kube-flannel
|
||||||
|
#image: flannelcni/flannel:v0.19.2 for ppc64le and mips64le (dockerhub limitations may apply)
|
||||||
|
image: docker.io/rancher/mirrored-flannelcni-flannel:v0.19.2
|
||||||
|
command:
|
||||||
|
- /opt/bin/flanneld
|
||||||
|
args:
|
||||||
|
- --ip-masq
|
||||||
|
- --kube-subnet-mgr
|
||||||
|
resources:
|
||||||
|
requests:
|
||||||
|
cpu: "100m"
|
||||||
|
memory: "50Mi"
|
||||||
|
limits:
|
||||||
|
cpu: "100m"
|
||||||
|
memory: "50Mi"
|
||||||
|
securityContext:
|
||||||
|
privileged: false
|
||||||
|
capabilities:
|
||||||
|
add: ["NET_ADMIN", "NET_RAW"]
|
||||||
|
env:
|
||||||
|
- name: POD_NAME
|
||||||
|
valueFrom:
|
||||||
|
fieldRef:
|
||||||
|
fieldPath: metadata.name
|
||||||
|
- name: POD_NAMESPACE
|
||||||
|
valueFrom:
|
||||||
|
fieldRef:
|
||||||
|
fieldPath: metadata.namespace
|
||||||
|
- name: EVENT_QUEUE_DEPTH
|
||||||
|
value: "5000"
|
||||||
|
volumeMounts:
|
||||||
|
- name: run
|
||||||
|
mountPath: /run/flannel
|
||||||
|
- name: flannel-cfg
|
||||||
|
mountPath: /etc/kube-flannel/
|
||||||
|
- name: xtables-lock
|
||||||
|
mountPath: /run/xtables.lock
|
||||||
|
volumes:
|
||||||
|
- name: run
|
||||||
|
hostPath:
|
||||||
|
path: /run/flannel
|
||||||
|
- name: cni-plugin
|
||||||
|
hostPath:
|
||||||
|
path: /opt/cni/bin
|
||||||
|
- name: cni
|
||||||
|
hostPath:
|
||||||
|
path: /etc/cni/net.d
|
||||||
|
- name: flannel-cfg
|
||||||
|
configMap:
|
||||||
|
name: kube-flannel-cfg
|
||||||
|
- name: xtables-lock
|
||||||
|
hostPath:
|
||||||
|
path: /run/xtables.lock
|
||||||
|
type: FileOrCreate
|
||||||
|
[root@master ~]# kubectl create -f kube-flannel.yaml
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 5.将node加入工作节点
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@node-1 ~]# kubeadm join 10.0.0.220:6443 --token mzrm3c.u9mpt80rddmjvd3g --discovery-token-ca-cert-hash sha256:fec53dfeacc5187d3f0e3998d65bd3e303fa64acd5156192240728567659bf4a
|
||||||
|
注意：
|
||||||
|
这里使用的是master初始化产生的token
|
||||||
|
这里的token时间长了会改变，需要使用命令获取，见下期内容
|
||||||
|
没有记录集群 join 命令的可以通过以下方式重新获取:
|
||||||
|
kubeadm token create --print-join-command --ttl=0
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 6.master节点查看集群状态
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl get node
|
||||||
|
NAME STATUS ROLES AGE VERSION
|
||||||
|
master Ready control-plane 7m v1.25.0
|
||||||
|
node-1 Ready <none> 2m7s v1.25.0
|
||||||
|
node-2 Ready <none> 50s v1.25.0
|
||||||
|
node-3 Ready <none> 110s v1.25.0
|
||||||
|
```
|
||||||
|
|
||||||
|
## 三：部署Dashboard
|
||||||
|
|
||||||
|
#### 1.kube-proxy 开启 ipvs
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl get configmap kube-proxy -n kube-system -o yaml > kube-proxy-configmap.yaml
|
||||||
|
[root@master ~]# sed -i 's/mode: ""/mode: "ipvs"/' kube-proxy-configmap.yaml
|
||||||
|
[root@master ~]# kubectl apply -f kube-proxy-configmap.yaml
|
||||||
|
[root@master ~]# rm -f kube-proxy-configmap.yaml
|
||||||
|
[root@master ~]# kubectl get pod -n kube-system | grep kube-proxy | awk '{system("kubectl delete pod "$1" -n kube-system")}'
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 2.Dashboard安装脚本
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# cat dashboard.yaml
|
||||||
|
# Copyright 2017 The Kubernetes Authors.
|
||||||
|
#
|
||||||
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
# you may not use this file except in compliance with the License.
|
||||||
|
# You may obtain a copy of the License at
|
||||||
|
#
|
||||||
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
#
|
||||||
|
# Unless required by applicable law or agreed to in writing, software
|
||||||
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
# See the License for the specific language governing permissions and
|
||||||
|
# limitations under the License.
|
||||||
|
|
||||||
|
apiVersion: v1
|
||||||
|
kind: Namespace
|
||||||
|
metadata:
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
apiVersion: v1
|
||||||
|
kind: ServiceAccount
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
kind: Service
|
||||||
|
apiVersion: v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
spec:
|
||||||
|
type: NodePort
|
||||||
|
ports:
|
||||||
|
- port: 443
|
||||||
|
targetPort: 8443
|
||||||
|
selector:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
apiVersion: v1
|
||||||
|
kind: Secret
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard-certs
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
type: Opaque
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
apiVersion: v1
|
||||||
|
kind: Secret
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard-csrf
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
type: Opaque
|
||||||
|
data:
|
||||||
|
csrf: ""
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
apiVersion: v1
|
||||||
|
kind: Secret
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard-key-holder
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
type: Opaque
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
kind: ConfigMap
|
||||||
|
apiVersion: v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard-settings
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
kind: Role
|
||||||
|
apiVersion: rbac.authorization.k8s.io/v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
rules:
|
||||||
|
# Allow Dashboard to get, update and delete Dashboard exclusive secrets.
|
||||||
|
- apiGroups: [""]
|
||||||
|
resources: ["secrets"]
|
||||||
|
resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"]
|
||||||
|
verbs: ["get", "update", "delete"]
|
||||||
|
# Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
|
||||||
|
- apiGroups: [""]
|
||||||
|
resources: ["configmaps"]
|
||||||
|
resourceNames: ["kubernetes-dashboard-settings"]
|
||||||
|
verbs: ["get", "update"]
|
||||||
|
# Allow Dashboard to get metrics.
|
||||||
|
- apiGroups: [""]
|
||||||
|
resources: ["services"]
|
||||||
|
resourceNames: ["heapster", "dashboard-metrics-scraper"]
|
||||||
|
verbs: ["proxy"]
|
||||||
|
- apiGroups: [""]
|
||||||
|
resources: ["services/proxy"]
|
||||||
|
resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"]
|
||||||
|
verbs: ["get"]
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
kind: ClusterRole
|
||||||
|
apiVersion: rbac.authorization.k8s.io/v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
rules:
|
||||||
|
# Allow Metrics Scraper to get metrics from the Metrics server
|
||||||
|
- apiGroups: ["metrics.k8s.io"]
|
||||||
|
resources: ["pods", "nodes"]
|
||||||
|
verbs: ["get", "list", "watch"]
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
apiVersion: rbac.authorization.k8s.io/v1
|
||||||
|
kind: RoleBinding
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
roleRef:
|
||||||
|
apiGroup: rbac.authorization.k8s.io
|
||||||
|
kind: Role
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
subjects:
|
||||||
|
- kind: ServiceAccount
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
apiVersion: rbac.authorization.k8s.io/v1
|
||||||
|
kind: ClusterRoleBinding
|
||||||
|
metadata:
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
roleRef:
|
||||||
|
apiGroup: rbac.authorization.k8s.io
|
||||||
|
kind: ClusterRole
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
subjects:
|
||||||
|
- kind: ServiceAccount
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
kind: Deployment
|
||||||
|
apiVersion: apps/v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: kubernetes-dashboard
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
spec:
|
||||||
|
replicas: 1
|
||||||
|
revisionHistoryLimit: 10
|
||||||
|
selector:
|
||||||
|
matchLabels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
template:
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
spec:
|
||||||
|
securityContext:
|
||||||
|
seccompProfile:
|
||||||
|
type: RuntimeDefault
|
||||||
|
containers:
|
||||||
|
- name: kubernetes-dashboard
|
||||||
|
image: kubernetesui/dashboard:v2.6.1
|
||||||
|
imagePullPolicy: Always
|
||||||
|
ports:
|
||||||
|
- containerPort: 8443
|
||||||
|
protocol: TCP
|
||||||
|
args:
|
||||||
|
- --auto-generate-certificates
|
||||||
|
- --namespace=kubernetes-dashboard
|
||||||
|
# Uncomment the following line to manually specify Kubernetes API server Host
|
||||||
|
# If not specified, Dashboard will attempt to auto discover the API server and connect
|
||||||
|
# to it. Uncomment only if the default does not work.
|
||||||
|
# - --apiserver-host=http://my-address:port
|
||||||
|
volumeMounts:
|
||||||
|
- name: kubernetes-dashboard-certs
|
||||||
|
mountPath: /certs
|
||||||
|
# Create on-disk volume to store exec logs
|
||||||
|
- mountPath: /tmp
|
||||||
|
name: tmp-volume
|
||||||
|
livenessProbe:
|
||||||
|
httpGet:
|
||||||
|
scheme: HTTPS
|
||||||
|
path: /
|
||||||
|
port: 8443
|
||||||
|
initialDelaySeconds: 30
|
||||||
|
timeoutSeconds: 30
|
||||||
|
securityContext:
|
||||||
|
allowPrivilegeEscalation: false
|
||||||
|
readOnlyRootFilesystem: true
|
||||||
|
runAsUser: 1001
|
||||||
|
runAsGroup: 2001
|
||||||
|
volumes:
|
||||||
|
- name: kubernetes-dashboard-certs
|
||||||
|
secret:
|
||||||
|
secretName: kubernetes-dashboard-certs
|
||||||
|
- name: tmp-volume
|
||||||
|
emptyDir: {}
|
||||||
|
serviceAccountName: kubernetes-dashboard
|
||||||
|
nodeSelector:
|
||||||
|
"kubernetes.io/os": linux
|
||||||
|
# Comment the following tolerations if Dashboard must not be deployed on master
|
||||||
|
tolerations:
|
||||||
|
- key: node-role.kubernetes.io/master
|
||||||
|
effect: NoSchedule
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
kind: Service
|
||||||
|
apiVersion: v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: dashboard-metrics-scraper
|
||||||
|
name: dashboard-metrics-scraper
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
spec:
|
||||||
|
ports:
|
||||||
|
- port: 8000
|
||||||
|
targetPort: 8000
|
||||||
|
selector:
|
||||||
|
k8s-app: dashboard-metrics-scraper
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
kind: Deployment
|
||||||
|
apiVersion: apps/v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: dashboard-metrics-scraper
|
||||||
|
name: dashboard-metrics-scraper
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
spec:
|
||||||
|
replicas: 1
|
||||||
|
revisionHistoryLimit: 10
|
||||||
|
selector:
|
||||||
|
matchLabels:
|
||||||
|
k8s-app: dashboard-metrics-scraper
|
||||||
|
template:
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: dashboard-metrics-scraper
|
||||||
|
spec:
|
||||||
|
securityContext:
|
||||||
|
seccompProfile:
|
||||||
|
type: RuntimeDefault
|
||||||
|
containers:
|
||||||
|
- name: dashboard-metrics-scraper
|
||||||
|
image: kubernetesui/metrics-scraper:v1.0.8
|
||||||
|
ports:
|
||||||
|
- containerPort: 8000
|
||||||
|
protocol: TCP
|
||||||
|
livenessProbe:
|
||||||
|
httpGet:
|
||||||
|
scheme: HTTP
|
||||||
|
path: /
|
||||||
|
port: 8000
|
||||||
|
initialDelaySeconds: 30
|
||||||
|
timeoutSeconds: 30
|
||||||
|
volumeMounts:
|
||||||
|
- mountPath: /tmp
|
||||||
|
name: tmp-volume
|
||||||
|
securityContext:
|
||||||
|
allowPrivilegeEscalation: false
|
||||||
|
readOnlyRootFilesystem: true
|
||||||
|
runAsUser: 1001
|
||||||
|
runAsGroup: 2001
|
||||||
|
serviceAccountName: kubernetes-dashboard
|
||||||
|
nodeSelector:
|
||||||
|
"kubernetes.io/os": linux
|
||||||
|
# Comment the following tolerations if Dashboard must not be deployed on master
|
||||||
|
tolerations:
|
||||||
|
- key: node-role.kubernetes.io/master
|
||||||
|
effect: NoSchedule
|
||||||
|
volumes:
|
||||||
|
- name: tmp-volume
|
||||||
|
emptyDir: {}
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 3.创建证书
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@k8s-master ~]# mkdir dashboard-certs
|
||||||
|
[root@k8s-master ~]# cd dashboard-certs/
|
||||||
|
#创建命名空间
|
||||||
|
[root@k8s-master ~]# kubectl create namespace kubernetes-dashboard
|
||||||
|
# 创建私钥key文件
|
||||||
|
[root@k8s-master ~]# openssl genrsa -out dashboard.key 2048
|
||||||
|
#证书请求
|
||||||
|
[root@k8s-master ~]# openssl req -days 36000 -new -out dashboard.csr -key dashboard.key -subj '/CN=dashboard-cert'
|
||||||
|
#自签证书
|
||||||
|
[root@k8s-master ~]# openssl x509 -req -in dashboard.csr -signkey dashboard.key -out dashboard.crt
|
||||||
|
#创建kubernetes-dashboard-certs对象
|
||||||
|
[root@k8s-master ~]# kubectl create secret generic kubernetes-dashboard-certs --from-file=dashboard.key --from-file=dashboard.crt -n kubernetes-dashboard
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 4.创建管理员
|
||||||
|
|
||||||
|
```shell
|
||||||
|
创建账户
|
||||||
|
[root@k8s-master ~]# vim dashboard-admin.yaml
|
||||||
|
apiVersion: v1
|
||||||
|
kind: ServiceAccount
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
name: dashboard-admin
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
#保存退出后执行
|
||||||
|
[root@k8s-master ~]# kubectl create -f dashboard-admin.yaml
|
||||||
|
为用户分配权限
|
||||||
|
[root@k8s-master ~]# vim dashboard-admin-bind-cluster-role.yaml
|
||||||
|
apiVersion: rbac.authorization.k8s.io/v1
|
||||||
|
kind: ClusterRoleBinding
|
||||||
|
metadata:
|
||||||
|
name: dashboard-admin-bind-cluster-role
|
||||||
|
labels:
|
||||||
|
k8s-app: kubernetes-dashboard
|
||||||
|
roleRef:
|
||||||
|
apiGroup: rbac.authorization.k8s.io
|
||||||
|
kind: ClusterRole
|
||||||
|
name: cluster-admin
|
||||||
|
subjects:
|
||||||
|
- kind: ServiceAccount
|
||||||
|
name: dashboard-admin
|
||||||
|
namespace: kubernetes-dashboard
|
||||||
|
#保存退出后执行
|
||||||
|
[root@k8s-master ~]# kubectl create -f dashboard-admin-bind-cluster-role.yaml
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 5.安装 Dashboard
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master dashboard-certs]# kubectl create -f dashboard.yaml
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 6.获取token
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master dashboard-certs]# kubectl -n kubernetes-dashboard create token dashboard-admin
|
||||||
|
eyJhbGciOiJSUzI1NiIsImtpZCI6InlBck13aTFMR2daR3htTmxSdG5XbGJjOVFLWmdMZlgzRU10TmJWRFNEMk0ifQ.eyJhdWQiOlsiaHR0cHM6Ly9rdWJlcm5ldGVzLmRlZmF1bHQuc3ZjLmNsdXN0ZXIubG9jYWwiXSwiZXhwIjoxNjYyMjE0MTA3LCJpYXQiOjE2NjIyMTA1MDcsImlzcyI6Imh0dHBzOi8va3ViZXJuZXRlcy5kZWZhdWx0LnN2Yy5jbHVzdGVyLmxvY2FsIiwia3ViZXJuZXRlcy5pbyI6eyJuYW1lc3BhY2UiOiJrdWJlcm5ldGVzLWRhc2hib2FyZCIsInNlcnZpY2VhY2NvdW50Ijp7Im5hbWUiOiJkYXNoYm9hcmQtYWRtaW4iLCJ1aWQiOiIwOTRhYWI2NC05NTkyLTRjYTctOWI3MS0yNDEwMmI5ODA1YjcifX0sIm5iZiI6MTY2MjIxMDUwNywic3ViIjoic3lzdGVtOnNlcnZpY2VhY2NvdW50Omt1YmVybmV0ZXMtZGFzaGJvYXJkOmRhc2hib2FyZC1hZG1pbiJ9.MQfc83l08PsAqmBHRzwgE_TsZGct0Sul1lM7Ks0ssf29DtXt22u9hHisvaLmQ64sNsvb_D7r47kDDTxZPbIJP_A2mBuHFqy_dnryUmqlTj7KFJm4PdObwiMTlnBch-v7HqxJKLuA6XXLxtpNrbLWqqG47Bc2kvvcF4BzSkiDhe-s5L0PS-WY753QjV0C9v63G8KJDxkQEGVC4PjqfXSclLi_jvIe4n3UqhUNHPl85JWgBhJHTTAei3Ztp7IMweztR_P30p6BiXEF0Kmcv8Nb7Xsk2dx5avYyiTRZTpq4pBkvAMKlCbXyKufh78mil_oNdaA8Q_AeFWFwgDx9UrGoFA
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 7.创建kubeconfig
|
||||||
|
|
||||||
|
```shell
|
||||||
|
获取certificate-authority-data：
|
||||||
|
[root@master ~]# CURRENT_CONTEXT=$(kubectl config current-context)
|
||||||
|
[root@master ~]# CURRENT_CLUSTER=$(kubectl config view --raw -o=go-template='{{range .contexts}}{{if eq .name "'''${CURRENT_CONTEXT}'''"}}{{ index .context "cluster" }}{{end}}{{end}}')
|
||||||
|
[root@master ~]# kubectl config view --raw -o=go-template='{{range .clusters}}{{if eq .name "'''${CURRENT_CLUSTER}'''"}}"{{with index .cluster "certificate-authority-data" }}{{.}}{{end}}"{{ end }}{{ end }}'
|
||||||
|
"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"
|
||||||
|
|
||||||
|
[root@master ~]# cat config
|
||||||
|
apiVersion: v1
|
||||||
|
clusters:
|
||||||
|
- cluster:
|
||||||
|
certificate-authority-data: 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
|
||||||
|
server: https://10.0.2.150:6443
|
||||||
|
name: kubernetes
|
||||||
|
contexts:
|
||||||
|
- context:
|
||||||
|
cluster: kubernetes
|
||||||
|
user: dashboard-admin
|
||||||
|
name: dashboard-admin@kubernetes
|
||||||
|
current-context: dashboard-admin@kubernetes
|
||||||
|
kind: Config
|
||||||
|
preferences: {}
|
||||||
|
users:
|
||||||
|
- name: dashboard-admin
|
||||||
|
user:
|
||||||
|
token: eyJhbGciOiJSUzI1NiIsImtpZCI6InlBck13aTFMR2daR3htTmxSdG5XbGJjOVFLWmdMZlgzRU10TmJWRFNEMk0ifQ.eyJhdWQiOlsiaHR0cHM6Ly9rdWJlcm5ldGVzLmRlZmF1bHQuc3ZjLmNsdXN0ZXIubG9jYWwiXSwiZXhwIjoxNjYyMjE0MjcwLCJpYXQiOjE2NjIyMTA2NzAsImlzcyI6Imh0dHBzOi8va3ViZXJuZXRlcy5kZWZhdWx0LnN2Yy5jbHVzdGVyLmxvY2FsIiwia3ViZXJuZXRlcy5pbyI6eyJuYW1lc3BhY2UiOiJrdWJlcm5ldGVzLWRhc2hib2FyZCIsInNlcnZpY2VhY2NvdW50Ijp7Im5hbWUiOiJkYXNoYm9hcmQtYWRtaW4iLCJ1aWQiOiIwOTRhYWI2NC05NTkyLTRjYTctOWI3MS0yNDEwMmI5ODA1YjcifX0sIm5iZiI6MTY2MjIxMDY3MCwic3ViIjoic3lzdGVtOnNlcnZpY2VhY2NvdW50Omt1YmVybmV0ZXMtZGFzaGJvYXJkOmRhc2hib2FyZC1hZG1pbiJ9.bHK9jgpCAQIAxwurh05zzndo22hWEzoDnfFRS3VDWAfoD0YOsTF6RbHFSshn0Vm-Xv1sEIgmVkjgftP2Pq_saMs-WdgHfTLz2CjxWpkYV4WQcMs4WJq9Lx5SQeNxw9mEh8c085nnx368GWkENHSsldKP-O6YliWQAP8qpOiUWrJqhteVQi0GD7EYmOPlnKFZF2YKaROYFvn9P8JiCL8rRTZ5GUYIty9LRLkh3daFXj67krk4v3pNLqdHcKKwkv8vFN4hl6RbgA3nY
|
||||||
|
```
|
||||||
|
|
||||||
|
|
@ -0,0 +1,684 @@
|
||||||
|
<h1><center>基于kubernetes部署Prometheus和Grafana</center></h1>
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
------
|
||||||
|
|
||||||
|
## 一：环境准备
|
||||||
|
|
||||||
|
#### 1.kubernetes集群正常
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl get node
|
||||||
|
NAME STATUS ROLES AGE VERSION
|
||||||
|
master Ready control-plane,master 36d v1.23.1
|
||||||
|
node-1 Ready <none> 36d v1.23.1
|
||||||
|
node-2 Ready <none> 36d v1.23.1
|
||||||
|
node-3 Ready <none> 36d v1.23.1
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 2.harbor仓库正常
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
## 二：Prometheus部署
|
||||||
|
|
||||||
|
#### 1.node-exporter部署
|
||||||
|
|
||||||
|
node-exporter可以采集机器（物理机、虚拟机、云主机等）的监控指标数据，能够采集到的指标包括CPU, 内存，磁盘，网络，文件数等信息
|
||||||
|
|
||||||
|
创建监控namespace：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl create ns monitor-sa
|
||||||
|
```
|
||||||
|
|
||||||
|
创建node-export.yaml：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# vim node-export.yaml
|
||||||
|
apiVersion: apps/v1
|
||||||
|
kind: DaemonSet # 可以保证k8s集群的每个节点都运行完全一样的pod
|
||||||
|
metadata:
|
||||||
|
name: node-exporter
|
||||||
|
namespace: monitor-sa
|
||||||
|
labels:
|
||||||
|
name: node-exporter
|
||||||
|
spec:
|
||||||
|
selector:
|
||||||
|
matchLabels:
|
||||||
|
name: node-exporter
|
||||||
|
template:
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
name: node-exporter
|
||||||
|
spec:
|
||||||
|
hostPID: true
|
||||||
|
hostIPC: true
|
||||||
|
hostNetwork: true
|
||||||
|
containers:
|
||||||
|
- name: node-exporter
|
||||||
|
image: prom/node-exporter:v0.16.0
|
||||||
|
#image: 10.0.0.230/xingdian/node-exporter:v0.16.0
|
||||||
|
ports:
|
||||||
|
- containerPort: 9100
|
||||||
|
resources:
|
||||||
|
requests:
|
||||||
|
cpu: 0.15 # 这个容器运行至少需要0.15核cpu
|
||||||
|
securityContext:
|
||||||
|
privileged: true # 开启特权模式
|
||||||
|
args:
|
||||||
|
- --path.procfs
|
||||||
|
- /host/proc
|
||||||
|
- --path.sysfs
|
||||||
|
- /host/sys
|
||||||
|
- --collector.filesystem.ignored-mount-points
|
||||||
|
- '"^/(sys|proc|dev|host|etc)($|/)"'
|
||||||
|
volumeMounts:
|
||||||
|
- name: dev
|
||||||
|
mountPath: /host/dev
|
||||||
|
- name: proc
|
||||||
|
mountPath: /host/proc
|
||||||
|
- name: sys
|
||||||
|
mountPath: /host/sys
|
||||||
|
- name: rootfs
|
||||||
|
mountPath: /rootfs
|
||||||
|
tolerations:
|
||||||
|
- key: "node-role.kubernetes.io/master"
|
||||||
|
operator: "Exists"
|
||||||
|
effect: "NoSchedule"
|
||||||
|
volumes:
|
||||||
|
- name: proc
|
||||||
|
hostPath:
|
||||||
|
path: /proc
|
||||||
|
- name: dev
|
||||||
|
hostPath:
|
||||||
|
path: /dev
|
||||||
|
- name: sys
|
||||||
|
hostPath:
|
||||||
|
path: /sys
|
||||||
|
- name: rootfs
|
||||||
|
hostPath:
|
||||||
|
path: /
|
||||||
|
```
|
||||||
|
|
||||||
|
注意：
|
||||||
|
|
||||||
|
hostNetwork、hostIPC、hostPID都为True时，表示这个Pod里的所有容器，会直接使用宿主机的网络，直接与宿主机进行IPC（进程间通信）通信，可以看到宿主机里正在运行的所有进程。加入了hostNetwork:true会直接将我们的宿主机的9100端口映射出来，从而不需要创建service 在我们的宿主机上就会有一个9100的端口
|
||||||
|
|
||||||
|
创建：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl apply -f node-export.yaml
|
||||||
|
```
|
||||||
|
|
||||||
|
查看node-exporter是否部署成功：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl get pods -n monitor-sa -o wide
|
||||||
|
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
|
||||||
|
node-exporter-2cbrg 1/1 Running 0 34m 10.0.0.220 master <none> <none>
|
||||||
|
node-exporter-7rrbh 1/1 Running 0 34m 10.0.0.222 node-2 <none> <none>
|
||||||
|
node-exporter-96v29 1/1 Running 0 34m 10.0.0.221 node-1 <none> <none>
|
||||||
|
node-exporter-bf2j8 1/1 Running 0 34m 10.0.0.223 node-3 <none> <none>
|
||||||
|
```
|
||||||
|
|
||||||
|
注意：
|
||||||
|
|
||||||
|
node-export默认的监听端口是9100，可以看到当前主机获取到的所有监控数据
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# curl http://10.0.0.220:9100/metrics | grep node_cpu_seconds
|
||||||
|
% Total % Received % Xferd Average Speed Time Time Time Current
|
||||||
|
Dload Upload Total Spent Left Speed
|
||||||
|
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0# HELP node_cpu_seconds_total Seconds the cpus spent in each mode.
|
||||||
|
# TYPE node_cpu_seconds_total counter
|
||||||
|
node_cpu_seconds_total{cpu="0",mode="idle"} 8398.49
|
||||||
|
node_cpu_seconds_total{cpu="0",mode="iowait"} 1.54
|
||||||
|
node_cpu_seconds_total{cpu="0",mode="irq"} 0
|
||||||
|
node_cpu_seconds_total{cpu="0",mode="nice"} 0
|
||||||
|
node_cpu_seconds_total{cpu="0",mode="softirq"} 17.2
|
||||||
|
node_cpu_seconds_total{cpu="0",mode="steal"} 0
|
||||||
|
node_cpu_seconds_total{cpu="0",mode="system"} 70.61
|
||||||
|
node_cpu_seconds_total{cpu="0",mode="user"} 187.04
|
||||||
|
node_cpu_seconds_total{cpu="1",mode="idle"} 8403.82
|
||||||
|
node_cpu_seconds_total{cpu="1",mode="iowait"} 4.95
|
||||||
|
node_cpu_seconds_total{cpu="1",mode="irq"} 0
|
||||||
|
node_cpu_seconds_total{cpu="1",mode="nice"} 0
|
||||||
|
node_cpu_seconds_total{cpu="1",mode="softirq"} 16.75
|
||||||
|
node_cpu_seconds_total{cpu="1",mode="steal"} 0
|
||||||
|
node_cpu_seconds_total{cpu="1",mode="system"} 71.26
|
||||||
|
node_cpu_seconds_total{cpu="1",mode="user"} 190.27
|
||||||
|
100 74016 100 74016 0 0 5878k 0 --:--:-- --:--:-- --:--:-- 6023k
|
||||||
|
|
||||||
|
[root@master ~]# curl http://10.0.0.220:9100/metrics | grep node_load
|
||||||
|
% Total % Received % Xferd Average Speed Time Time Time Current
|
||||||
|
Dload Upload Total Spent Left Speed
|
||||||
|
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0# HELP node_loa
|
||||||
|
1 1m load average.
|
||||||
|
# TYPE node_load1 gauge
|
||||||
|
node_load1 0.2
|
||||||
|
# HELP node_load15 15m load average.
|
||||||
|
# TYPE node_load15 gauge
|
||||||
|
node_load15 0.22
|
||||||
|
# HELP node_load5 5m load average.
|
||||||
|
# TYPE node_load5 gauge
|
||||||
|
node_load5 0.2
|
||||||
|
100 74044 100 74044 0 0 8604k 0 --:--:-- --:--:-- --:--:-- 9038k
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 2.Prometheus安装
|
||||||
|
|
||||||
|
创建sa账号，对sa做rbac授权：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
# 创建一个sa账号monitor
|
||||||
|
[root@master ~]# kubectl create serviceaccount monitor -n monitor-sa
|
||||||
|
|
||||||
|
# 把sa账号monitor通过clusterrolebing绑定到clusterrole上
|
||||||
|
[root@master ~]# kubectl create clusterrolebinding monitor-clusterrolebinding -n monitor-sa --clusterrole=cluster-admin --serviceaccount=monitor-sa:monitor
|
||||||
|
```
|
||||||
|
|
||||||
|
创建prometheus数据存储目录：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
# 将prometheus调度到node-1节点
|
||||||
|
[root@node-1 ~]# mkdir /data && chmod 777 /data
|
||||||
|
```
|
||||||
|
|
||||||
|
创建一个configmap存储卷，用来存放prometheus配置信息：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# vim prometheus-cfg.yaml
|
||||||
|
---
|
||||||
|
kind: ConfigMap
|
||||||
|
apiVersion: v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
app: prometheus
|
||||||
|
name: prometheus-config
|
||||||
|
namespace: monitor-sa
|
||||||
|
data:
|
||||||
|
prometheus.yml: |
|
||||||
|
global:
|
||||||
|
scrape_interval: 15s
|
||||||
|
scrape_timeout: 10s
|
||||||
|
evaluation_interval: 1m
|
||||||
|
scrape_configs:
|
||||||
|
- job_name: 'kubernetes-node'
|
||||||
|
kubernetes_sd_configs:
|
||||||
|
- role: node
|
||||||
|
relabel_configs:
|
||||||
|
- source_labels: [__address__]
|
||||||
|
regex: '(.*):10250'
|
||||||
|
replacement: '${1}:9100'
|
||||||
|
target_label: __address__
|
||||||
|
action: replace
|
||||||
|
- action: labelmap
|
||||||
|
regex: __meta_kubernetes_node_label_(.+)
|
||||||
|
- job_name: 'kubernetes-node-cadvisor'
|
||||||
|
kubernetes_sd_configs:
|
||||||
|
- role: node
|
||||||
|
scheme: https
|
||||||
|
tls_config:
|
||||||
|
ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
|
||||||
|
bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
|
||||||
|
relabel_configs:
|
||||||
|
- action: labelmap
|
||||||
|
regex: __meta_kubernetes_node_label_(.+)
|
||||||
|
- target_label: __address__
|
||||||
|
replacement: kubernetes.default.svc:443
|
||||||
|
- source_labels: [__meta_kubernetes_node_name]
|
||||||
|
regex: (.+)
|
||||||
|
target_label: __metrics_path__
|
||||||
|
replacement: /api/v1/nodes/${1}/proxy/metrics/cadvisor
|
||||||
|
- job_name: 'kubernetes-apiserver'
|
||||||
|
kubernetes_sd_configs:
|
||||||
|
- role: endpoints
|
||||||
|
scheme: https
|
||||||
|
tls_config:
|
||||||
|
ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
|
||||||
|
bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
|
||||||
|
relabel_configs:
|
||||||
|
- source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
|
||||||
|
action: keep
|
||||||
|
regex: default;kubernetes;https
|
||||||
|
- job_name: 'kubernetes-service-endpoints'
|
||||||
|
kubernetes_sd_configs:
|
||||||
|
- role: endpoints
|
||||||
|
relabel_configs:
|
||||||
|
- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape]
|
||||||
|
action: keep
|
||||||
|
regex: true
|
||||||
|
- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scheme]
|
||||||
|
action: replace
|
||||||
|
target_label: __scheme__
|
||||||
|
regex: (https?)
|
||||||
|
- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_path]
|
||||||
|
action: replace
|
||||||
|
target_label: __metrics_path__
|
||||||
|
regex: (.+)
|
||||||
|
- source_labels: [__address__, __meta_kubernetes_service_annotation_prometheus_io_port]
|
||||||
|
action: replace
|
||||||
|
target_label: __address__
|
||||||
|
regex: ([^:]+)(?::\d+)?;(\d+)
|
||||||
|
replacement: $1:$2
|
||||||
|
- action: labelmap
|
||||||
|
regex: __meta_kubernetes_service_label_(.+)
|
||||||
|
- source_labels: [__meta_kubernetes_namespace]
|
||||||
|
action: replace
|
||||||
|
target_label: kubernetes_namespace
|
||||||
|
- source_labels: [__meta_kubernetes_service_name]
|
||||||
|
action: replace
|
||||||
|
target_label: kubernetes_name
|
||||||
|
```
|
||||||
|
|
||||||
|
创建：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl apply -f prometheus-cfg.yaml
|
||||||
|
configmap/prometheus-config created
|
||||||
|
```
|
||||||
|
|
||||||
|
配置详解：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
---
|
||||||
|
kind: ConfigMap
|
||||||
|
apiVersion: v1
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
app: prometheus
|
||||||
|
name: prometheus-config
|
||||||
|
namespace: monitor-sa
|
||||||
|
data:
|
||||||
|
prometheus.yml: |
|
||||||
|
global:
|
||||||
|
scrape_interval: 15s #采集目标主机监控据的时间间隔
|
||||||
|
scrape_timeout: 10s # 数据采集超时时间，默认10s
|
||||||
|
evaluation_interval: 1m #触发告警检测的时间，默认是1m
|
||||||
|
scrape_configs: # 配置数据源，称为target，每个target用job_name命名。又分为静态配置和服务发现
|
||||||
|
- job_name: 'kubernetes-node'
|
||||||
|
kubernetes_sd_configs: # 使用的是k8s的服务发现
|
||||||
|
- role: node # 使用node角色，它使用默认的kubelet提供的http端口来发现集群中每个node节点
|
||||||
|
relabel_configs: # 重新标记
|
||||||
|
- source_labels: [__address__] # 配置的原始标签，匹配地址
|
||||||
|
regex: '(.*):10250' #匹配带有10250端口的url
|
||||||
|
replacement: '${1}:9100' #把匹配到的ip:10250的ip保留
|
||||||
|
target_label: __address__ #新生成的url是${1}获取到的ip:9100
|
||||||
|
action: replace # 动作替换
|
||||||
|
- action: labelmap
|
||||||
|
regex: __meta_kubernetes_node_label_(.+) #匹配到下面正则表达式的标签会被保留,如果不做regex正则的话，默认只是会显示instance标签
|
||||||
|
- job_name: 'kubernetes-node-cadvisor' # 抓取cAdvisor数据，是获取kubelet上/metrics/cadvisor接口数据来获取容器的资源使用情况
|
||||||
|
kubernetes_sd_configs:
|
||||||
|
- role: node
|
||||||
|
scheme: https
|
||||||
|
tls_config:
|
||||||
|
ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
|
||||||
|
bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
|
||||||
|
relabel_configs:
|
||||||
|
- action: labelmap # 把匹配到的标签保留
|
||||||
|
regex: __meta_kubernetes_node_label_(.+) #保留匹配到的具有__meta_kubernetes_node_label的标签
|
||||||
|
- target_label: __address__ # 获取到的地址：__address__="192.168.40.180:10250"
|
||||||
|
replacement: kubernetes.default.svc:443 # 把获取到的地址替换成新的地址kubernetes.default.svc:443
|
||||||
|
- source_labels: [__meta_kubernetes_node_name]
|
||||||
|
regex: (.+) # 把原始标签中__meta_kubernetes_node_name值匹配到
|
||||||
|
target_label: __metrics_path__ #获取__metrics_path__对应的值
|
||||||
|
replacement: /api/v1/nodes/${1}/proxy/metrics/cadvisor
|
||||||
|
# 把metrics替换成新的值api/v1/nodes/k8s-master1/proxy/metrics/cadvisor
|
||||||
|
# ${1}是__meta_kubernetes_node_name获取到的值
|
||||||
|
# 新的url就是https://kubernetes.default.svc:443/api/v1/nodes/k8s-master1/proxy/metrics/cadvisor
|
||||||
|
- job_name: 'kubernetes-apiserver'
|
||||||
|
kubernetes_sd_configs:
|
||||||
|
- role: endpoints # 使用k8s中的endpoint服务发现，采集apiserver 6443端口获取到的数据
|
||||||
|
scheme: https
|
||||||
|
tls_config:
|
||||||
|
ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
|
||||||
|
bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
|
||||||
|
relabel_configs:
|
||||||
|
- source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
|
||||||
|
# endpoint这个对象的名称空间,endpoint对象的服务名,exnpoint的端口名称
|
||||||
|
action: keep # 采集满足条件的实例，其他实例不采集
|
||||||
|
regex: default;kubernetes;https #正则匹配到的默认空间下的service名字是kubernetes，协议是https的endpoint类型保留下来
|
||||||
|
- job_name: 'kubernetes-service-endpoints'
|
||||||
|
kubernetes_sd_configs:
|
||||||
|
- role: endpoints
|
||||||
|
relabel_configs:
|
||||||
|
- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape]
|
||||||
|
action: keep
|
||||||
|
regex: true
|
||||||
|
# 重新打标仅抓取到的具有 "prometheus.io/scrape: true" 的annotation的端点，意思是说如果某个service具有prometheus.io/scrape = true annotation声明则抓取，annotation本身也是键值结构，所以这里的源标签设置为键，而regex设置值true，当值匹配到regex设定的内容时则执行keep动作也就是保留，其余则丢弃。
|
||||||
|
- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scheme]
|
||||||
|
action: replace
|
||||||
|
target_label: __scheme__
|
||||||
|
regex: (https?)
|
||||||
|
# 重新设置scheme，匹配源标签__meta_kubernetes_service_annotation_prometheus_io_scheme也就是prometheus.io/scheme annotation，如果源标签的值匹配到regex，则把值替换为__scheme__对应的值。
|
||||||
|
- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_path]
|
||||||
|
action: replace
|
||||||
|
target_label: __metrics_path__
|
||||||
|
regex: (.+)
|
||||||
|
# 应用中自定义暴露的指标，也许你暴露的API接口不是/metrics这个路径，那么你可以在这个POD对应的service中做一个"prometheus.io/path = /mymetrics" 声明，上面的意思就是把你声明的这个路径赋值给__metrics_path__，其实就是让prometheus来获取自定义应用暴露的metrices的具体路径，不过这里写的要和service中做好约定，如果service中这样写 prometheus.io/app-metrics-path: '/metrics' 那么你这里就要__meta_kubernetes_service_annotation_prometheus_io_app_metrics_path这样写。
|
||||||
|
- source_labels: [__address__, __meta_kubernetes_service_annotation_prometheus_io_port]
|
||||||
|
action: replace
|
||||||
|
target_label: __address__
|
||||||
|
regex: ([^:]+)(?::\d+)?;(\d+)
|
||||||
|
replacement: $1:$2
|
||||||
|
# 暴露自定义的应用的端口，就是把地址和你在service中定义的 "prometheus.io/port = <port>" 声明做一个拼接，然后赋值给__address__，这样prometheus就能获取自定义应用的端口，然后通过这个端口再结合__metrics_path__来获取指标，如果__metrics_path__值不是默认的/metrics那么就要使用上面的标签替换来获取真正暴露的具体路径。
|
||||||
|
- action: labelmap #保留下面匹配到的标签
|
||||||
|
regex: __meta_kubernetes_service_label_(.+)
|
||||||
|
- source_labels: [__meta_kubernetes_namespace]
|
||||||
|
action: replace # 替换__meta_kubernetes_namespace变成kubernetes_namespace
|
||||||
|
target_label: kubernetes_namespace
|
||||||
|
- source_labels: [__meta_kubernetes_service_name]
|
||||||
|
action: replace
|
||||||
|
target_label: kubernetes_name
|
||||||
|
```
|
||||||
|
|
||||||
|
通过deployment部署prometheus：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# cat prometheus-deploy.yaml
|
||||||
|
---
|
||||||
|
apiVersion: apps/v1
|
||||||
|
kind: Deployment
|
||||||
|
metadata:
|
||||||
|
name: prometheus-server
|
||||||
|
namespace: monitor-sa
|
||||||
|
labels:
|
||||||
|
app: prometheus
|
||||||
|
spec:
|
||||||
|
replicas: 1
|
||||||
|
selector:
|
||||||
|
matchLabels:
|
||||||
|
app: prometheus
|
||||||
|
component: server
|
||||||
|
#matchExpressions:
|
||||||
|
#- {key: app, operator: In, values: [prometheus]}
|
||||||
|
#- {key: component, operator: In, values: [server]}
|
||||||
|
template:
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
app: prometheus
|
||||||
|
component: server
|
||||||
|
annotations:
|
||||||
|
prometheus.io/scrape: 'false'
|
||||||
|
spec:
|
||||||
|
nodeName: node-1 # 指定pod调度到哪个节点上
|
||||||
|
serviceAccountName: monitor
|
||||||
|
containers:
|
||||||
|
- name: prometheus
|
||||||
|
image: prom/prometheus:v2.2.1
|
||||||
|
#image: 10.0.0.230/xingdian/prometheus:v2.2.1
|
||||||
|
imagePullPolicy: IfNotPresent
|
||||||
|
command:
|
||||||
|
- prometheus
|
||||||
|
- --config.file=/etc/prometheus/prometheus.yml
|
||||||
|
- --storage.tsdb.path=/prometheus # 数据存储目录
|
||||||
|
- --storage.tsdb.retention=720h # 数据保存时长
|
||||||
|
- --web.enable-lifecycle # 开启热加载
|
||||||
|
ports:
|
||||||
|
- containerPort: 9090
|
||||||
|
protocol: TCP
|
||||||
|
volumeMounts:
|
||||||
|
- mountPath: /etc/prometheus/prometheus.yml
|
||||||
|
name: prometheus-config
|
||||||
|
subPath: prometheus.yml
|
||||||
|
- mountPath: /prometheus/
|
||||||
|
name: prometheus-storage-volume
|
||||||
|
volumes:
|
||||||
|
- name: prometheus-config
|
||||||
|
configMap:
|
||||||
|
name: prometheus-config
|
||||||
|
items:
|
||||||
|
- key: prometheus.yml
|
||||||
|
path: prometheus.yml
|
||||||
|
mode: 0644
|
||||||
|
- name: prometheus-storage-volume
|
||||||
|
hostPath:
|
||||||
|
path: /data
|
||||||
|
type: Directory
|
||||||
|
```
|
||||||
|
|
||||||
|
创建：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl apply -f prometheus-deploy.yaml
|
||||||
|
deployment.apps/prometheus-server created
|
||||||
|
```
|
||||||
|
|
||||||
|
查看：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl get pods -o wide -n monitor-sa
|
||||||
|
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
|
||||||
|
prometheus-server-59cb5d648-bxwrb 1/1 Running 0 14m 10.244.2.100 node-1 <none> <none>
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 3.prometheus pod创建service
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# cat prometheus-svc.yaml
|
||||||
|
apiVersion: v1
|
||||||
|
kind: Service
|
||||||
|
metadata:
|
||||||
|
name: prometheus
|
||||||
|
namespace: monitor-sa
|
||||||
|
labels:
|
||||||
|
app: prometheus
|
||||||
|
spec:
|
||||||
|
type: NodePort
|
||||||
|
ports:
|
||||||
|
- port: 9090
|
||||||
|
targetPort: 9090
|
||||||
|
protocol: TCP
|
||||||
|
selector:
|
||||||
|
app: prometheus
|
||||||
|
component: server
|
||||||
|
```
|
||||||
|
|
||||||
|
创建：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl apply -f prometheus-svc.yaml
|
||||||
|
service/prometheus created
|
||||||
|
```
|
||||||
|
|
||||||
|
查看service在物理机映射的端口：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master ~]# kubectl get svc -n monitor-sa
|
||||||
|
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
|
||||||
|
prometheus NodePort 10.106.61.80 <none> 9090:32169/TCP 32m
|
||||||
|
```
|
||||||
|
|
||||||
|
#### 4.web界面查看
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#### 5.Prometheus热加载
|
||||||
|
|
||||||
|
```shell
|
||||||
|
# 为了每次修改配置文件可以热加载prometheus，也就是不停止prometheus，就可以使配置生效，想要使配置生效可用如下热加载命令：
|
||||||
|
[root@master ~]# kubectl get pods -n monitor-sa -o wide -l app=prometheus
|
||||||
|
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
|
||||||
|
prometheus-server-689fb8cdbc-kcsw2 1/1 Running 0 5m39s 10.244.36.70 k8s-node1 <none> <none>
|
||||||
|
|
||||||
|
# 想要使配置生效可用如下命令热加载：
|
||||||
|
[root@master ~]# curl -X POST http://10.244.36.70:9090/-/reload
|
||||||
|
|
||||||
|
# 查看log
|
||||||
|
[root@master ~]# kubectl logs -n monitor-sa prometheus-server-689fb8cdbc-kcsw2
|
||||||
|
```
|
||||||
|
|
||||||
|
注意：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
# 热加载速度比较慢，可以暴力重启prometheus，如修改上面的prometheus-cfg.yaml文件之后，可执行如下强制删除：
|
||||||
|
[root@master ~]# kubectl delete -f prometheus-cfg.yaml
|
||||||
|
[root@master ~]# kubectl delete -f prometheus-deploy.yaml
|
||||||
|
# 然后再通过apply更新：
|
||||||
|
[root@master ~]# kubectl apply -f prometheus-cfg.yaml
|
||||||
|
[root@master ~]# kubectl apply -f prometheus-deploy.yaml
|
||||||
|
#注意：线上最好热加载，暴力删除可能造成监控数据的丢失
|
||||||
|
```
|
||||||
|
|
||||||
|
## 三：Grafana的部署
|
||||||
|
|
||||||
|
#### 1.Grafana介绍
|
||||||
|
|
||||||
|
Grafana是一个跨平台的开源的度量分析和可视化工具，可以将采集的数据可视化的展示，并及时通知给告警接收方
|
||||||
|
|
||||||
|
它主要有以下六大特点：
|
||||||
|
|
||||||
|
1）展示方式：快速灵活的客户端图表，面板插件有许多不同方式的可视化指标和日志，官方库中具有丰富的仪表盘插件，比如热图、折线图、图表等多种展示方式
|
||||||
|
|
||||||
|
2）数据源：Graphite，InfluxDB，OpenTSDB，Prometheus，Elasticsearch，CloudWatch和KairosDB等
|
||||||
|
|
||||||
|
3）通知提醒：以可视方式定义最重要指标的警报规则，Grafana将不断计算并发送通知，在数据达到阈值时通过Slack、PagerDuty等获得通知
|
||||||
|
|
||||||
|
4）混合展示：在同一图表中混合使用不同的数据源，可以基于每个查询指定数据源，甚至自定义数据源
|
||||||
|
|
||||||
|
5）注释：使用来自不同数据源的丰富事件注释图表，将鼠标悬停在事件上会显示完整的事件元数据和标记
|
||||||
|
|
||||||
|
#### 2.Grafana安装
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master prome]# cat grafana.yaml
|
||||||
|
apiVersion: apps/v1
|
||||||
|
kind: Deployment
|
||||||
|
metadata:
|
||||||
|
name: monitoring-grafana
|
||||||
|
namespace: kube-system
|
||||||
|
spec:
|
||||||
|
replicas: 1
|
||||||
|
selector:
|
||||||
|
matchLabels:
|
||||||
|
task: monitoring
|
||||||
|
k8s-app: grafana
|
||||||
|
template:
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
task: monitoring
|
||||||
|
k8s-app: grafana
|
||||||
|
spec:
|
||||||
|
containers:
|
||||||
|
- name: grafana
|
||||||
|
image: 10.0.0.230/xingdian/heapster-grafana-amd64:v5.0.4
|
||||||
|
#heleicool/heapster-grafana-amd64:v5.0.4
|
||||||
|
ports:
|
||||||
|
- containerPort: 3000
|
||||||
|
protocol: TCP
|
||||||
|
volumeMounts:
|
||||||
|
- mountPath: /etc/ssl/certs
|
||||||
|
name: ca-certificates
|
||||||
|
readOnly: true
|
||||||
|
- mountPath: /var
|
||||||
|
name: grafana-storage
|
||||||
|
env:
|
||||||
|
- name: INFLUXDB_HOST
|
||||||
|
value: monitoring-influxdb
|
||||||
|
- name: GF_SERVER_HTTP_PORT
|
||||||
|
value: "3000"
|
||||||
|
# The following env variables are required to make Grafana accessible via
|
||||||
|
# the kubernetes api-server proxy. On production clusters, we recommend
|
||||||
|
# removing these env variables, setup auth for grafana, and expose the grafana
|
||||||
|
# service using a LoadBalancer or a public IP.
|
||||||
|
- name: GF_AUTH_BASIC_ENABLED
|
||||||
|
value: "false"
|
||||||
|
- name: GF_AUTH_ANONYMOUS_ENABLED
|
||||||
|
value: "true"
|
||||||
|
- name: GF_AUTH_ANONYMOUS_ORG_ROLE
|
||||||
|
value: Admin
|
||||||
|
- name: GF_SERVER_ROOT_URL
|
||||||
|
# If you're only using the API Server proxy, set this value instead:
|
||||||
|
# value: /api/v1/namespaces/kube-system/services/monitoring-grafana/proxy
|
||||||
|
value: /
|
||||||
|
volumes:
|
||||||
|
- name: ca-certificates
|
||||||
|
hostPath:
|
||||||
|
path: /etc/ssl/certs
|
||||||
|
- name: grafana-storage
|
||||||
|
emptyDir: {}
|
||||||
|
---
|
||||||
|
apiVersion: v1
|
||||||
|
kind: Service
|
||||||
|
metadata:
|
||||||
|
labels:
|
||||||
|
# For use as a Cluster add-on (https://github.com/kubernetes/kubernetes/tree/master/cluster/addons)
|
||||||
|
# If you are NOT using this as an addon, you should comment out this line.
|
||||||
|
kubernetes.io/cluster-service: 'true'
|
||||||
|
kubernetes.io/name: monitoring-grafana
|
||||||
|
name: monitoring-grafana
|
||||||
|
namespace: kube-system
|
||||||
|
spec:
|
||||||
|
# In a production setup, we recommend accessing Grafana through an external Loadbalancer
|
||||||
|
# or through a public IP.
|
||||||
|
# type: LoadBalancer
|
||||||
|
# You could also use NodePort to expose the service at a randomly-generated port
|
||||||
|
# type: NodePort
|
||||||
|
ports:
|
||||||
|
- port: 80
|
||||||
|
targetPort: 3000
|
||||||
|
selector:
|
||||||
|
k8s-app: grafana
|
||||||
|
type: NodePort
|
||||||
|
```
|
||||||
|
|
||||||
|
创建：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master prome]# kubectl apply -f grafana.yaml
|
||||||
|
deployment.apps/monitoring-grafana created
|
||||||
|
service/monitoring-grafana created
|
||||||
|
```
|
||||||
|
|
||||||
|
查看：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master prome]# kubectl get pods -n kube-system -l task=monitoring -o wide
|
||||||
|
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
|
||||||
|
monitoring-grafana-7c5c6c7486-rbt62 1/1 Running 0 9s 10.244.1.83 node-3 <none> <none>
|
||||||
|
```
|
||||||
|
|
||||||
|
```shell
|
||||||
|
[root@master prome]# kubectl get svc -n kube-system | grep grafana
|
||||||
|
monitoring-grafana NodePort 10.101.77.194 <none> 80:30919/TCP 76s
|
||||||
|
```
|
||||||
|
|
||||||
|
## 四：配置Grafana
|
||||||
|
|
||||||
|
浏览器访问：
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
添加数据源：
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
指定Prometheus地址：
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
导入监控模板：
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
注意：
|
||||||
|
|
||||||
|
官方下载监控模板：https://grafana.com/dashboards?dataSource=prometheus&search=kubernetes
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
展示：
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue