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Windows10下Hyper-V虚拟机安装kubernetes集群（一）创建虚拟机
Windows10下Hyper-V虚拟机安装kubernetes集群（二）配置虚拟机
Windows10下Hyper-V虚拟机安装kubernetes集群（三）复制虚拟机
Windows10下Hyper-V虚拟机安装kubernetes集群（四）启动k8s

一、设置虚拟机网络

• 1、 修改hosts文件

  vi /etc/hosts
  

  # 将下边内容加到文件的最后边
  192.168.137.10 k8s-master
  192.168.137.20 k8s-node01
  192.168.137.30 k8s-node02
  

• 2、 修改配置文件

  vi /etc/sysconfig/network-scripts/ifcfg-eth0
  

  将 BOOTPROTO=dhcp 改为 BOOTPROTO=static
  在文件末尾追加以下内容：

  IPADDR=192.168.137.10
  NETMASK=255.255.255.0
  GATEWAY=192.168.137.1
  DNS1=192.168.137.1
  

  修改前
  
  修改后
  
  修改完成后保存并重启网络服务

  systemctl restart network.service
  

  重启完成后可以ping一下测试网络。

  这时已经可以进行ssh连接，但是一般会出现ssh连接超时问题，此时需要修改配置文件 /etc/ssh/sshd_config：

  vi /etc/ssh/sshd_config
  

  将 #UseDNS yes 改为 UseDNS no ，即：将注释打开并将yes改为no。
  修改完之后重启服务：

  sudo service sshd restart
  

  • 如果sshd_config改完还是不可以，将ssh_config也同样改一下。

二、设置基本配置项

• 1、 关闭防火墙

  systemctl stop firewalld && systemctl disable firewalld && iptables -F
  

• 2、 关闭selinux

  sed -i 's/enforcing/disabled/' /etc/selinux/config && setenforce 0
  

• 3、 关闭swap分区

  sed -ri 's/.*swap.*/#&/' /etc/fstab
  

• 4、 修改yum源
  • 4.1 备份本地的源文件

  mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak
  

  • 4.2 下载阿里云配置文件并重命名

  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
  

  对于下载慢的或者干脆下不了的，可以直接复制以下内容，自己在对应路径下新建文件并粘贴即可：

# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#

[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
        http://mirrors.aliyuncs.com/centos/$releasever/os/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

#released updates
[updates]
name=CentOS-$releasever - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
        http://mirrors.aliyuncs.com/centos/$releasever/updates/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
        http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/
        http://mirrors.aliyuncs.com/centos/$releasever/centosplus/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/contrib/$basearch/
        http://mirrors.aliyuncs.com/centos/$releasever/contrib/$basearch/
        http://mirrors.cloud.aliyuncs.com/centos/$releasever/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

三、安装docker

• 1、安装依赖

  sudo yum install -y yum-utils device-mapper-persistent-data lvm2
  

• 2、添加docker仓库

  sudo yum-config-manager --add-repo  https://download.docker.com/linux/centos/docker-ce.repo
  

• 3、 安装docker

   sudo yum update -y && sudo yum install -y containerd.io-1.2.13 docker-ce-19.03.11 docker-ce-cli-19.03.11
  

• 4、创建docker配置目录

  sudo mkdir /etc/docker
  

• 5、 把docker的cgroup driver改为systemd

  cat >> /etc/docker/daemon.json <<EOF
   { "exec-opts": ["native.cgroupdriver=systemd"], "log-driver": "json-file", "log-opts": { "max-size": "100m" }, "storage-driver": "overlay2", "storage-opts": [ "overlay2.override_kernel_check=true" ] }
  EOF
  

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

• 6、 重启docker

  sudo systemctl daemon-reload
  sudo systemctl restart docker
  

• 7、 设置开机启动

  sudo systemctl enable docker
  

三、安装k8s

所有节点都需要安装kubelet和kubeadm，master节点必须安装kubectl，woker节点kubectl可装可不装

• 1、设置k8s源

  cat <<EOF > /etc/yum.repos.d/kubernetes.repo 
  [kubernetes] 
  name=Kubernetes 
  baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/ 
  enabled=1 
  gpgcheck=1 
  repo_gpgcheck=1 
  gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
  EOF
  

• 2、安装kubelet、kubeadm、kubectl

  教程使用的是指定版本安装 1.20.14

  # 指定版本号安装
   yum install -y kubelet-1.20.14 kubectl-1.20.14 kubeadm-1.20.14
  

  或

  # 最新版安装
  sudo yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
  

• 3、设置开机启动

  sudo systemctl enable --now kubelet
  

• 4、查看本次安装结果

  yum list installed |grep kube
  

  

至此，前期安装的准备工作基本完成