ETCD下载安装

curl -L ${DOWNLOAD_URL}/${ETCD_VER}/etcd-${ETCD_VER}-linux-amd64.tar.gz -o /tmp/etcd-${ETCD_VER}-linux-amd64.tar.gz
curl -L https://github.com/etcd-io/etcd/releases/download/v3.4.20/etcd-v3.4.20-linux-amd64.tar.gz -o /tmp/etcd-v3.4.20-linux-amd64.tar.gz
 
 

##### 纯手动部署
可以很好理解组件之间的交互以及基本概念
生产不推荐
    无法维护
    无法保证参数配置最佳
参考文档：https://github.com/kelseyhightower/kubernetes-the-hard-way

################################################### Kubeadm安装Kubernetes 1.13准备工作   注意：Kubernetes所有节点操作 ##############################

### 基础环境介绍：
    系统：CentOS 7.6 64bit        （Infrastructure server）
    内核: Linux 3.10.0-957.el7.x86_64  
    系统盘：100G
    网卡：仅主机  
    机器数量: 3台
    CPU:2核
    内存：推荐4G内存，最少2G
    docker：docker-ce-18.06.1.ce-3.el7.x86_64
    注意：配置主机名、IP地址、网关、DNS均为静态获取

### hosts表：
172.16.11.229    master01
172.16.11.230    node01

### 关闭firewalld
systemctl disable firewalld.service

[root@vj-ecs-03 ~]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)
[root@vj-ecs-03 ~]# 

### 关闭SELinux
sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

[root@vj-ecs-03 ~]# cat /etc/selinux/config

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

### 关闭swap
  临时关闭：swapoff -a
  永久关闭：注释掉/etc/fstab下的swap一行
### 重启机器

[root@vj-ecs-02 ~]# swapoff -a

### 配置本地yum源
【参考后一个文章详细】