kubernetes二进制集群部署--------单master集群（步骤非常详细，适合初学者）

落日映苍穹つ 2023-05-21 07:15 5阅读 0赞

### 文章目录 ###

*   *  一、集群环境
     *  二、部署master节点组件
     *   *  2.1、部署 apiserver
         *   *  2.1.1、制作api-server证书
             *  2.1.2、解压二进制文件
             *  2.1.3、制作token令牌
             *  2.1.4、开启 apiserver
         *  2.2、部署scheduler
         *  2.3、部署controller-manager
     *  三、部署node节点组件
     *   *  3.1、部署kubeconfig
         *  3.2、部署node1的kubelet组件
         *  3.3、部署node1 的kube-proxy组件
         *  3.4、部署node2节点的 kubelet 和 kube-proxy 服务
     *  四、验证集群

## 一、集群环境 ##

**在上篇博客介绍过了，我的搭建部署也是在上一篇的基础上做的。  
博客链接：[kubernetes 集群部署之ETCD数据库部署、flannel网络组件安装][kubernetes _ETCD_flannel]**

## 二、部署master节点组件 ##

在 Master 上要部署以下三大核心组件：

*  kube-apiserver：是集群的统一入口，各组件协调者，所有对象资源的增删改查和监听操作都交给 APIServer 处理后再提交给 Etcd 存储；
 *  kube-controller-manager：处理群集中常规后台任务，一个资源对应一个控制器，而 controller-manager 就是负责管理这些控制器的；
 *  kube-scheduler：根据调度算法为新创建的 Pod 选择一个 Node 节点，可以任意部署，可以部署在同一个节点上，也可以部署在不同节点上。
 *  操作流程：配置文件 -----> systemd 管理组件 -----> 启动

先把master压缩包放在k8s目录下

[root@localhost k8s]# unzip master.zip

解压出来的三个组件脚本我自己编写的，具体内容在下面的操作中展示。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70]

[root@localhost k8s]# chmod +x controller-manager.sh    #给controll脚本加上权限
    [root@localhost k8s]# mkdir -p /opt/kubernetes/{cfg,ssl,bin}

### 2.1、部署 apiserver ###

#### 2.1.1、制作api-server证书 ####

1、创建api-server证书目录

[root@localhost k8s]# mkdir k8s-cert
    [root@localhost k8s]# cd k8s-cert/

2、编写证书生成脚本

[root@localhost k8s-cert]# vi k8s-cert.sh     
    
    #编写ca证书的配置文件
    cat > ca-config.json <<EOF
    {
      "signing": {
        "default": {
          "expiry": "87600h"
        },
        "profiles": {
          "kubernetes": {
             "expiry": "87600h",
             "usages": [
                "signing",
                "key encipherment",
                "server auth",
                "client auth"
            ]
          }
        }
      }
    }
    EOF
    
    #编写ca签名证书文件
    cat > ca-csr.json <<EOF
    {
        "CN": "kubernetes",
        "key": {
            "algo": "rsa",
            "size": 2048
        },
        "names": [
            {
                "C": "CN",
                "L": "Beijing",
                "ST": "Beijing",
          	    "O": "k8s",
                "OU": "System"
            }
        ]
    }
    EOF
    
    #使用签名证书生成ca.pem、ca-key.pem文件
    cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
    
    #编写apiserver的签名证书
    注意：master2节点和LB节点的IP地址是 为了之后的多master节点部署添加的
    cat > server-csr.json <<EOF
    {
        "CN": "kubernetes",
        "hosts": [
          "10.0.0.1",
          "127.0.0.1",
          "192.168.100.128",    #master1节点
          "192.168.100.132",    #master2节点
          "192.168.100.100",    #VIP地址
          "192.168.100.133",    #负载调度器（master节点）
          "192.168.100.129",    #负载调度器（backup节点）
          "kubernetes",
          "kubernetes.default",
          "kubernetes.default.svc",
          "kubernetes.default.svc.cluster",
          "kubernetes.default.svc.cluster.local"
        ],
        "key": {
            "algo": "rsa",
            "size": 2048
        },
        "names": [
            {
                "C": "CN",
                "L": "BeiJing",
                "ST": "BeiJing",
                "O": "k8s",
                "OU": "System"
            }
        ]
    }
    EOF
    
    #使用之前的文件生成server证书
    cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server
    
    #编写用户证书
    cat > admin-csr.json <<EOF
    {
      "CN": "admin",
      "hosts": [],
      "key": {
        "algo": "rsa",
        "size": 2048
      },
      "names": [
        {
          "C": "CN",
          "L": "BeiJing",
          "ST": "BeiJing",
          "O": "system:masters",
          "OU": "System"
        }
      ]
    }
    EOF
    
    cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin
    
    # 编写 kube-proxy 证书
    cat > kube-proxy-csr.json <<EOF
    {
      "CN": "system:kube-proxy",
      "hosts": [],
      "key": {
        "algo": "rsa",
        "size": 2048
      },
      "names": [
        {
          "C": "CN",
          "L": "BeiJing",
          "ST": "BeiJing",
          "O": "k8s",
          "OU": "System"
        }
      ]
    }
    EOF
    
    cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy

3、执行脚本，并把通信证书拷贝到 /opt/kubernetes/ssl目录下

[root@localhost k8s-cert]# bash k8s-cert.sh 
    
    [root@localhost k8s-cert]# cp ca*pem server*pem /opt/kubernetes/ssl/

![在这里插入图片描述][20200429212955611.png]

#### 2.1.2、解压二进制文件 ####

1、解压k8s安装包

[root@localhost k8s]# tar zxvf kubernetes-server-linux-amd64.tar.gz

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 1]  
2、复制关键的命令文件到/opt/kubernetes/bin/

[root@localhost ~]# cd /root/k8s/kubernetes/server/bin/
    
    [root@localhost bin]# cp kube-apiserver kubectl kube-controller-manager kube-scheduler /opt/kubernetes/bin/

#### 2.1.3、制作token令牌 ####

[root@localhost ~]# cd /root/k8s/
    
    //使用下面的 head命令 随机生成序列号
    [root@localhost k8s]# head -c 16 /dev/urandom | od -An -t x | tr -d ' '
    84cf410ca1d9dd456dbba668de2c1aca    #复制序列号写入 token.csv 中
    
    [root@localhost k8s]# vi /opt/kubernetes/cfg/token.csv
    #写入内容：序列号,用户名,id,角色
    84cf410ca1d9dd456dbba668de2c1aca,kubelet-bootstrap,10001,"system:kubelet-bootstrap"

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 2]

#### 2.1.4、开启 apiserver ####

1、二进制文件、token令牌、证书都准备好了，开启apiserver，指向ETCD集群，把信息保存到ETCD中。

[root@localhost k8s]# bash apiserver.sh 
    Created symlink from /etc/systemd/system/multi-user.target.wants/kube-apiserver.service to /usr/lib/systemd/system/kube-apiserver.service.

apiserver.sh脚本：

#!/bin/bash
    
    MASTER_ADDRESS=$1
    ETCD_SERVERS=$2
    
    #在k8s工作目录里生成kube-apiserver 配置文件
    cat <<EOF >/opt/kubernetes/cfg/kube-apiserver
    
    KUBE_APISERVER_OPTS="--logtostderr=true \\
    --v=4 \\
    --etcd-servers=${ETCD_SERVERS} \\
    --bind-address=${MASTER_ADDRESS} \\
    --secure-port=6443 \\
    --advertise-address=${MASTER_ADDRESS} \\
    --allow-privileged=true \\
    --service-cluster-ip-range=10.0.0.0/24 \\
    --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota,NodeRestriction \\
    --authorization-mode=RBAC,Node \\
    --kubelet-https=true \\
    --enable-bootstrap-token-auth \\
    --token-auth-file=/opt/kubernetes/cfg/token.csv \\
    --service-node-port-range=30000-50000 \\
    --tls-cert-file=/opt/kubernetes/ssl/server.pem  \\
    --tls-private-key-file=/opt/kubernetes/ssl/server-key.pem \\
    --client-ca-file=/opt/kubernetes/ssl/ca.pem \\
    --service-account-key-file=/opt/kubernetes/ssl/ca-key.pem \\
    --etcd-cafile=/opt/etcd/ssl/ca.pem \\
    --etcd-certfile=/opt/etcd/ssl/server.pem \\
    --etcd-keyfile=/opt/etcd/ssl/server-key.pem"
    
    EOF
    
    #生成启动脚本
    cat <<EOF >/usr/lib/systemd/system/kube-apiserver.service
    [Unit]
    Description=Kubernetes API Server
    Documentation=https://github.com/kubernetes/kubernetes
    
    [Service]
    EnvironmentFile=-/opt/kubernetes/cfg/kube-apiserver
    ExecStart=/opt/kubernetes/bin/kube-apiserver \$KUBE_APISERVER_OPTS
    Restart=on-failure
    
    [Install]
    WantedBy=multi-user.target
    EOF
    
    #启动apiserver组件
    systemctl daemon-reload
    systemctl enable kube-apiserver
    systemctl restart kube-apiserver

2、检查进程是否启动成功。

[root@localhost k8s]# ps aux | grep kube

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 3]  
3、查看监听的https端口

[root@localhost k8s]# netstat -natp | grep 6443
    [root@localhost k8s]# netstat -natp | grep 8080

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 4]

### 2.2、部署scheduler ###

scheduler.sh脚本内容：

#!/bin/bash
    
    MASTER_ADDRESS=$1
    
    cat <<EOF >/opt/kubernetes/cfg/kube-scheduler
    
    KUBE_SCHEDULER_OPTS="--logtostderr=true \\
    --v=4 \\
    --master=${MASTER_ADDRESS}:8080 \\
    --leader-elect"
    
    EOF
    
    cat <<EOF >/usr/lib/systemd/system/kube-scheduler.service
    [Unit]
    Description=Kubernetes Scheduler
    Documentation=https://github.com/kubernetes/kubernetes
    
    [Service]
    EnvironmentFile=-/opt/kubernetes/cfg/kube-scheduler
    ExecStart=/opt/kubernetes/bin/kube-scheduler \$KUBE_SCHEDULER_OPTS
    Restart=on-failure
    
    [Install]
    WantedBy=multi-user.target
    EOF
    
    systemctl daemon-reload
    systemctl enable kube-scheduler
    systemctl restart kube-scheduler

启动scheduler服务

[root@localhost k8s]# ./scheduler.sh 127.0.0.1

![在这里插入图片描述][20200430091906205.png]

### 2.3、部署controller-manager ###

controller-manager.sh脚本编写内容：

#!/bin/bash
    
    MASTER_ADDRESS=$1
    
    cat <<EOF >/opt/kubernetes/cfg/kube-controller-manager
    
    
    KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=true \\
    --v=4 \\
    --master=${MASTER_ADDRESS}:8080 \\
    --leader-elect=true \\
    --address=127.0.0.1 \\
    --service-cluster-ip-range=10.0.0.0/24 \\
    --cluster-name=kubernetes \\
    --cluster-signing-cert-file=/opt/kubernetes/ssl/ca.pem \\
    --cluster-signing-key-file=/opt/kubernetes/ssl/ca-key.pem  \\
    --root-ca-file=/opt/kubernetes/ssl/ca.pem \\
    --service-account-private-key-file=/opt/kubernetes/ssl/ca-key.pem \\
    --experimental-cluster-signing-duration=87600h0m0s"
    
    EOF
    
    cat <<EOF >/usr/lib/systemd/system/kube-controller-manager.service
    [Unit]
    Description=Kubernetes Controller Manager
    Documentation=https://github.com/kubernetes/kubernetes
    
    [Service]
    EnvironmentFile=-/opt/kubernetes/cfg/kube-controller-manager
    ExecStart=/opt/kubernetes/bin/kube-controller-manager \$KUBE_CONTROLLER_MANAGER_OPTS
    Restart=on-failure
    
    [Install]
    WantedBy=multi-user.target
    EOF
    
    systemctl daemon-reload
    systemctl enable kube-controller-manager
    systemctl restart kube-controller-manager

启动controller-manager

[root@localhost k8s]# ./controller-manager.sh 127.0.0.1

![在这里插入图片描述][20200430092335768.png]  
查看master节点状态

[root@localhost k8s]# /opt/kubernetes/bin/kubectl get cs

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 5]

## 三、部署node节点组件 ##

在 node上要部署以下三大核心组件：

*  kubelet：是master在node节点上的agent，可以管理本机运行容器的生命周期，例如创建容器、Pod挂载数据卷、下载secret、获取容器和节点状态等工作，kubelet 将每个 Pod转换成一组容器。
 *  kube-proxy：在 node节点上实现 Pod网络代理，维护网络规划和四层负载均衡工作。
 *  docker：容器（我们已经安装好了）

### 3.1、部署kubeconfig ###

*  **在master节点上进行操作**

**1、在master上，把 kubelet、kube-proxy 拷贝到 两个node节点上去**

[root@localhost bin]# scp kubelet kube-proxy root@192.168.100.131:/opt/kubernetes/bin/
    
    [root@localhost bin]# scp kubelet kube-proxy root@192.168.100.136:/opt/kubernetes/bin/

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 6]  
**2、编写kubeconfig脚本**

[root@localhost k8s]# mkdir kubeconfig
    [root@localhost k8s]# cd kubeconfig/
    
    [root@localhost kubeconfig]# cat /opt/kubernetes/cfg/token.csv  //获取 token令牌的序列号
    84cf410ca1d9dd456dbba668de2c1aca,kubelet-bootstrap,10001,"system:kubelet-bootstrap"

[root@localhost kubeconfig]# vim kubeconfig
    APISERVER=$1     #master节点的IP地址
    SSL_DIR=$2         #k8s证书路径
    
    # 创建kubelet bootstrapping kubeconfig 
    export KUBE_APISERVER="https://$APISERVER:6443"
    
    # 设置集群参数
    kubectl config set-cluster kubernetes \
      --certificate-authority=$SSL_DIR/ca.pem \
      --embed-certs=true \
      --server=${KUBE_APISERVER} \
      --kubeconfig=bootstrap.kubeconfig
    
    # 设置客户端认证参数
    kubectl config set-credentials kubelet-bootstrap \
      --token=84cf410ca1d9dd456dbba668de2c1aca \     #注意：随机生成的序列号不同，要修改
      --kubeconfig=bootstrap.kubeconfig
    
    # 设置上下文参数
    kubectl config set-context default \
      --cluster=kubernetes \
      --user=kubelet-bootstrap \
      --kubeconfig=bootstrap.kubeconfig
    
    # 设置默认上下文
    kubectl config use-context default --kubeconfig=bootstrap.kubeconfig
    
    # 创建kube-proxy kubeconfig文件
    
    kubectl config set-cluster kubernetes \
      --certificate-authority=$SSL_DIR/ca.pem \
      --embed-certs=true \
      --server=${KUBE_APISERVER} \
      --kubeconfig=kube-proxy.kubeconfig
    
    kubectl config set-credentials kube-proxy \
      --client-certificate=$SSL_DIR/kube-proxy.pem \
      --client-key=$SSL_DIR/kube-proxy-key.pem \
      --embed-certs=true \
      --kubeconfig=kube-proxy.kubeconfig
    
    kubectl config set-context default \
      --cluster=kubernetes \
      --user=kube-proxy \
      --kubeconfig=kube-proxy.kubeconfig
    
    kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig

![在这里插入图片描述][2020043010322350.png]  
3、设置环境变量，使可以在任意目录下识别kubectl命令

[root@localhost kubeconfig]# export PATH=$PATH:/opt/kubernetes/bin/

4、检查健康状态

[root@localhost kubeconfig]# kubectl get cs

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 7]  
5、运行kubeconfig脚本生成配置文件

[root@localhost kubeconfig]# bash kubeconfig 192.168.100.128 /root/k8s/k8s-cert/

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 8]  
将生成的配置文件传给两个node节点

[root@localhost kubeconfig]# scp bootstrap.kubeconfig kube-proxy.kubeconfig root@192.168.100.131:/opt/kubernetes/cfg/
    
    [root@localhost kubeconfig]# scp bootstrap.kubeconfig kube-proxy.kubeconfig root@192.168.100.136:/opt/kubernetes/cfg/

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 9]  
6、创建 bootstrap角色赋予权限，用于连接 apiserver请求签名（重要）

[root@localhost kubeconfig]# kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap
    clusterrolebinding.rbac.authorization.k8s.io/kubelet-bootstrap created

### 3.2、部署node1的kubelet组件 ###

*  **在node1节点上操作**

1、编写kubelet.sh脚本

#!/bin/bash
    
    NODE_ADDRESS=$1
    DNS_SERVER_IP=${2:-"10.0.0.2"}
    
    cat <<EOF >/opt/kubernetes/cfg/kubelet
    
    KUBELET_OPTS="--logtostderr=true \\
    --v=4 \\
    --hostname-override=${NODE_ADDRESS} \\
    --kubeconfig=/opt/kubernetes/cfg/kubelet.kubeconfig \\
    --bootstrap-kubeconfig=/opt/kubernetes/cfg/bootstrap.kubeconfig \\
    --config=/opt/kubernetes/cfg/kubelet.config \\
    --cert-dir=/opt/kubernetes/ssl \\
    --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"
    
    EOF
    
    cat <<EOF >/opt/kubernetes/cfg/kubelet.config
    
    kind: KubeletConfiguration
    apiVersion: kubelet.config.k8s.io/v1beta1
    address: ${NODE_ADDRESS}
    port: 10250
    readOnlyPort: 10255
    cgroupDriver: cgroupfs
    clusterDNS:
    - ${DNS_SERVER_IP} 
    clusterDomain: cluster.local.
    failSwapOn: false
    authentication:
      anonymous:
        enabled: true
    EOF
    
    cat <<EOF >/usr/lib/systemd/system/kubelet.service
    [Unit]
    Description=Kubernetes Kubelet
    After=docker.service
    Requires=docker.service
    
    [Service]
    EnvironmentFile=/opt/kubernetes/cfg/kubelet
    ExecStart=/opt/kubernetes/bin/kubelet \$KUBELET_OPTS
    Restart=on-failure
    KillMode=process
    
    [Install]
    WantedBy=multi-user.target
    EOF
    
    systemctl daemon-reload
    systemctl enable kubelet
    systemctl restart kubelet

2、加执行权限

[root@localhost ~]# chmod +x /root/kubelet.sh

3、运行脚本启动kubelet，向master集群发送请求

[root@localhost ~]# bash kubelet.sh 192.168.100.131

4、检查 kubelet 服务启动

[root@localhost ~]# ps aux | grep kube

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 10]  
5、在master节点上，检查 node01 节点的请求

//用下面这个命令检查得到node1请求，并复制node1请求的名字
    [root@localhost kubeconfig]# kubectl get csr

**Pending（意思：等待群集给该节点颁发证书）**  
![在这里插入图片描述][20200430114120317.png]  
6、master设置同意连接请求，颁发证书

//同意请求的命令格式：kubectl certificate approve node1请求的NAME
    [root@localhost kubeconfig]# kubectl certificate approve node-csr-wvb8EvLCzVY5I6sKJGeMh4oDLOkYVlHc6hY8_UHri4U
    
    [root@localhost kubeconfig]# kubectl get csr    #发现状态变成允许

![在这里插入图片描述][20200430115056214.png]  
7、查看群集节点，成功加入 node01 节点

[root@localhost kubeconfig]# kubectl get node
    NAME              STATUS   ROLES    AGE     VERSION
    192.168.100.131   Ready    <none>   4m44s   v1.12.3

### 3.3、部署node1 的kube-proxy组件 ###

1、编写proxy.sh 脚本

#!/bin/bash
    
    NODE_ADDRESS=$1
    
    cat <<EOF >/opt/kubernetes/cfg/kube-proxy
    
    KUBE_PROXY_OPTS="--logtostderr=true \\
    --v=4 \\
    --hostname-override=${NODE_ADDRESS} \\
    --cluster-cidr=10.0.0.0/24 \\
    --proxy-mode=ipvs \\
    --kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig"
    
    EOF
    
    cat <<EOF >/usr/lib/systemd/system/kube-proxy.service
    [Unit]
    Description=Kubernetes Proxy
    After=network.target
    
    [Service]
    EnvironmentFile=-/opt/kubernetes/cfg/kube-proxy
    ExecStart=/opt/kubernetes/bin/kube-proxy \$KUBE_PROXY_OPTS
    Restart=on-failure
    
    [Install]
    WantedBy=multi-user.target
    EOF
    
    systemctl daemon-reload
    systemctl enable kube-proxy
    systemctl restart kube-proxy

2、加执行权限

[root@localhost ~]# chmod +x /root/proxy.sh

3、在 node1节点上操作，启动 proxy服务，并查看状态是否正常

[root@localhost ~]# bash proxy.sh 192.168.100.131
    [root@localhost ~]# systemctl status kube-proxy.service

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 11]

### 3.4、部署node2节点的 kubelet 和 kube-proxy 服务 ###

1、为了提高效率，我们将 node01上现成的 /opt/kubernetes目录复制到其他节点进行修改。

[root@localhost ~]# scp -r /opt/kubernetes/ root@192.168.100.136:/opt/

再把kubelet，kube-proxy的service文件拷贝到node2中

[root@localhost ~]# scp /usr/lib/systemd/system/{kubelet,kube-proxy}.service root@192192.168.109..168.100.136:/usr/lib/systemd/system/

2、接下来在 node02 节点上的操作

*  首先，先删除复制过来的证书，因为待会 node02 会自行申请属于自己的证书

[root@localhost ~]# cd /opt/kubernetes/ssl/
    [root@localhost ssl]# ls
    kubelet-client-2020-04-30-11-48-13.pem  kubelet.crt
    kubelet-client-current.pem              kubelet.key
    [root@localhost ssl]# rm -rf *

*  修改配置文件 kubelet 、kubelet.config 、kube-proxy（三个配置文件）中node1的IP地址

[root@localhost ssl]# cd /opt/kubernetes/cfg/
    [root@localhost cfg]# vim kubelet

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 12]

[root@localhost cfg]# vi kubelet.config

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 13]

[root@localhost cfg]# vi kube-proxy

![在这里插入图片描述][20200430122639651.png]  
3、启动node2节点的 kubelet、kube-proxy 服务，并设置开机自启

[root@localhost cfg]# systemctl start kubelet.service 
    [root@localhost cfg]# systemctl enable kubelet.service
    Created symlink from /etc/systemd/system/multi-user.target.wants/kubelet.service to /usr/lib/systemd/system/kubelet.service.
    
    [root@localhost cfg]# systemctl start kube-proxy.service 
    [root@localhost cfg]# systemctl enable kube-proxy.service 
    Created symlink from /etc/systemd/system/multi-user.target.wants/kube-proxy.service to /usr/lib/systemd/system/kube-proxy.service.

4、在master上查看node2节点的请求

[root@localhost kubeconfig]# kubectl get csr

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4MzYxNTQx_size_16_color_FFFFFF_t_70 14]  
接下来和刚刚一样，授权许可加入集群

[root@localhost kubeconfig]# kubectl certificate approve node-csr-DiaTo2KEty9zNGCNdV4Hw8AUPfjd7gdLHvph41lkQ9k

## 四、验证集群 ##

查看群集中的节点

[root@localhost ~]# kubectl get node
    NAME              STATUS   ROLES    AGE   VERSION
    192.168.100.131   Ready    <none>   50m   v1.12.3
    192.168.100.136   Ready    <none>   22s   v1.12.3

到这里，我的单master节点的K8s集群部署完成了。

我的多节点部署后续也会更新，大家可以关注我的博客号。

[kubernetes _ETCD_flannel]: https://blog.csdn.net/qq_28361541/article/details/105811397
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