kubernetes之kubeadmin安装部署

刺骨的言语ヽ痛彻心扉 2022-11-27 06:48 237阅读 0赞

# 1 脚本地址 #

链接：https://pan.baidu.com/s/1uut9qXxVmcnlZXq3v7Dw-g 
    提取码：qujc

# 2 前置准备 #

## 2.1 环境 ##

192.168.38.38 master 4g
    192.168.38.39 node1  4g
    192.168.38.40 node2  4g

## 2.2 安装基础软件包 ##

yum -y install wget net-tools nfs-utils lrzsz gcc gcc-c++ make cmake libxml2-devel openssl-devel curl curl-devel unzip sudo ntp libaio-devel wget vim ncurses-devel autoconf automake zlib-devel python-devel epel-release openssh-server socat ipvsadm conntrack ntpdate

## 2.3 关闭防火墙 ##

systemctl stop firewalld && systemctl disable firewalld

## 2.4 时间同步 ##

ntpdate cn.pool.ntp.org

## 2.5 关闭selinux ##

#所有节点
    sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/sysconfig/selinux
    sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config

## 2.6 关闭交换分区 ##

swapoff -a
    sed -i 's/.*swap.*/#&/' /etc/fstab

## 2.7 修改内核 ##

cat <<EOF >  /etc/sysctl.d/k8s.conf
    net.bridge.bridge-nf-call-ip6tables = 1
    net.bridge.bridge-nf-call-iptables = 1
    EOF
    sysctl --system

## 2.8 修改主机名 ##

hostnamectl set-hostname master
    hostnamectl set-hostname node1
    hostnamectl set-hostname node2

## 2.9 修改host ##

vim /etc/hosts
    192.168.38.38 master
    192.168.38.39 node1
    192.168.38.40 node2

## 2.10 设置网桥包经IPTables，core文件生成路径，配置永久生效 ##

echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables
    echo 1 > /proc/sys/net/bridge/bridge-nf-call-ip6tables
    echo """
    vm.swappiness = 0
    net.bridge.bridge-nf-call-iptables = 1
    net.ipv4.ip_forward = 1
    net.bridge.bridge-nf-call-ip6tables = 1
    """ > /etc/sysctl.conf
    sysctl -p

# 3 安装Docker #

## 3.1 前置准备 ##

#备份原来的yum
    mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
    #下载阿里的yum源
    wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    #生成新的yum缓存
    yum makecache fast
    #配置安装k8s需要的yum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=0
    EOF
    #清理缓存
    yum clean all
    #生成新的yum缓存
    yum makecache fast
    #更新软件包
    yum -y update
    #安装软件包
    yum -y install yum-utils device-mapper-persistent-data lvm2
    #添加新的软件源
    yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

## 3.2 安装docker ##

#安装
    yum install -y docker-ce-19*
    #启动
    systemctl start docker
    #查看状态
    systemctl status docker  
    #开机自启
    systemctl enable docker
    #配置镜像加速
    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"
      ],
      "registry-mirrors": ["https://ep6965hb.mirror.aliyuncs.com"]
    }
    EOF
    #重启
    systemctl daemon-reload && systemctl restart docker

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# 4 安装k8s #

## 4.1 配置k8s，yum源 ##

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

## 4.2 安装kubeadm、kubelet和kubectl ##

#安装
    yum install -y kubelet-1.17.3 kubectl-1.17.3 kubeadm-1.17.3
    #开机启动
    systemctl enable kubelet && systemctl start kubelet

## 4.3 部署Master ##

#master节点，下载该节点需要的镜像
    chmod +x master_images.sh
    ./master_images.sh

![在这里插入图片描述][20200813195048235.png_pic_center]

#master节点初始化,修改apiserver地址为master地址
    kubeadm init \
    --apiserver-advertise-address=192.168.38.38 \
    --image-repository registry.cn-hangzhou.aliyuncs.com/google_containers \
    --kubernetes-version v1.17.3 \
    --service-cidr=10.96.0.0/16 \
    --pod-network-cidr=10.244.0.0/16
    
    #记录token
    kubeadm join 192.168.38.38:6443 --token mka9n9.tk47pjuno0aguc7d \
        --discovery-token-ca-cert-hash sha256:1caac4d6cc02d3f3fd4da09be9e8cf8a80655ea35bc21a2cec530933478c023b
    
    #master执行
    mkdir -p $HOME/.kube
    sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
    sudo chown $(id -u):$(id -g) $HOME/.kube/config

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 1]

#部署flannel
    kubectl apply -f kube-flannel.yml
    #查看flannel
    kubectl  get pods --all-namespaces
    #查看master状态
    kubectl get nodes

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 3]  
![在这里插入图片描述][2020081319514572.png_pic_center]

## 4.4 加入node ##

#在node1、node2节点执行命令
    kubeadm join 192.168.38.38:6443 --token mka9n9.tk47pjuno0aguc7d \
        --discovery-token-ca-cert-hash sha256:1caac4d6cc02d3f3fd4da09be9e8cf8a80655ea35bc21a2cec530933478c023b
    #master查看节点
    kubectl get nodes

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 4]

# 5 部署ingress #

#部署
    kubectl apply -f ingress-controller.yaml
    #查看所有pods
    kubectl get pods --all-namespaces

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM0MTI1OTk5_size_16_color_FFFFFF_t_70_pic_center 5]

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[20200813195048235.png_pic_center]: /images/20221124/fdc5cc6c7a4747ad896c1e8e3ddd1da3.png
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