CentOS二进制安装Kubernetes

今天药忘吃喽~ 2023-01-01 06:59 139阅读 0赞

## 前言 ##

> 最近在私有云部署一套自动化运维平台；
> 
> 其中k8s是重头戏，这篇文章为大家分享一下二进制安装方式

## k8s架构图 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center]

## 安装过程 ##

*  基本环境
    
     *  CentOS版本 7.9.2009
     *  Etcd 版本3.4.14
     *  Docker
     *  k8s版本 1.17.16
 *  kube-apiserver服务安装
    
     *  下载并解压

cd /soft
    wget https://dl.k8s.io/v1.20.0/kubernetes-server-linux-amd64.tar.gz
    tar -zxvf kubernetes-server-linux-amd64.tar.gz
    cd kubernetes

*  创建启动配置文件

mkdir /soft/kubernetes/server/conf/
    vim /soft/kubernetes/server/conf/apiserver
      
    KUBE_API_ADDRESS="--insecure-bind-address=0.0.0.0"
    KUBE_API_PORT="--port=8886"
    KUBE_ETCD_SERVERS="--etcd-servers=http://10.9.0.46:2379"
    KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=169.169.0.0/16"
    KUBE_ADMISSION_CONTROL="--admission-control=NamespaceLifecycle,LimitRanger,SecurityContextDeny,ResourceQuota"
    KUBE_API_LOG="--logtostderr=false --log-dir=/home/k8s-t/log/kubernets --v=2"
    KUBE_API_ARGS=" "

*  修改配置文件

vim /etc/systemd/system/kube-apiserver.service
      
    [Unit]
    Description=Kubernetes API Server
    After=etcd.service
    Wants=etcd.service
      
    [Service]
    EnvironmentFile=/soft/kubernetes/server/conf/apiserver
    ExecStart=/soft/kubernetes/server/bin/kube-apiserver  \
              $KUBE_ETCD_SERVERS \
              $KUBE_API_ADDRESS \
              $KUBE_API_PORT \
              $KUBE_SERVICE_ADDRESSES \
              $KUBE_ADMISSION_CONTROL \
            $KUBE_API_LOG \
              $KUBE_API_ARGS 
    Restart=on-failure
      Type=notify
      LimitNOFILE=65536
      
    [Install]
    WantedBy=multi-user.target

*  kube-controller-manger服务安装
 *  创建启动配置文件

vim /soft/kubernetes/server/conf/controller-manager
    
    KUBE_MASTER="--master=http://10.9.0.46:8886"
    KUBE_CONTROLLER_MANAGER_ARGS=" "

*  修改配置文件

vim /etc/systemd/system/kube-controller-manager.service
      
    [Unit]
    Description=Kubernetes Scheduler
    After=kube-apiserver.service 
    Requires=kube-apiserver.service
    
    [Service]
    EnvironmentFile=-/soft/kubernetes/server/conf/controller-manager
    ExecStart=/soft/kubernetes/server/bin/kube-controller-manager \
            $KUBE_MASTER \
            $KUBE_CONTROLLER_MANAGER_ARGS
    Restart=on-failure
    LimitNOFILE=65536
    
    [Install]
    WantedBy=multi-user.target

*  **kube-scheduler**服务安装
 *  创建启动配置文件

vim /soft/kubernetes/server/conf/scheduler
    
    KUBE_MASTER="--master=http://10.9.0.46:8886"
    KUBE_SCHEDULER_ARGS="--logtostderr=true --log-dir=/home/k8s-t/log/kubernetes --v=2"

*  创建服务配置文件

vim /etc/systemd/system/kube-scheduler.service
    
    [Unit]
    Description=Kubernetes Scheduler
    After=kube-apiserver.service 
    Requires=kube-apiserver.service
    
    [Service]
    User=root
    EnvironmentFile=-/soft/kubernetes/server/conf/scheduler
    ExecStart=/soft/kubernetes/server/bin/kube-scheduler \
            $KUBE_MASTER \
            $KUBE_SCHEDULER_ARGS
    Restart=on-failure
    LimitNOFILE=65536
    
    [Install]
    WantedBy=multi-user.target

*  将各个组件启动

systemctl daemon-reload
    systemctl enable kube-apiserver.service
    systemctl start kube-apiserver.service
    
    systemctl enable kube-controller-manager.service
    systemctl start kube-controller-manager.service
    
    systemctl enable kube-scheduler.service
    systemctl start kube-scheduler.service

## 总结 ##

*  k8s改变了项目运维的方式，使得发布变得十分简单的同时降低了项目风险；
 *  多动手多实践；

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