1 環境介紹

作業系統：CentOS 7.6

Docker: 19.03.15

Kubernetes：1.20.0

2 準備工作

1. 關閉selinux

[root]# setenforce 0
[root]# vi /etc/selinux/config
SELINUX=disabled

2. 關閉firewalld

[root]# systemctl stop firewalld
[root]# systemctl disable firewall
 

3. 關閉swap

[root]# swapoff -a
[root]# vi /etc/fstab
#/dev/mapper/centos-swap swap                    swap    defaults        0 0

4. 修改grub

[root]# vi /etc/default/grub
新增如下部分：
GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1"

5. 配置hosts檔案

[root]# vi /etc/hosts
192.168.1.73 master
192.168.1.74 node1
192.168.1.75 node2
 

3. 安裝K8S

3.1 安裝Docker

三個節點均安裝Docker

[root]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
[root]# yum install docker-ce-19.03.15 -y
[root]# cat > /etc/docker/daemon.json << EOF
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
EOF
[root]# systemctl enable docker
[root]# systemctl start docker
 

3.2 安裝kubelet、kubeadm

三個節點均需要安裝。

[root]# 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

[root]# yum install -y kubelet-1.20.0 kubeadm-1.20.0

3.3 Master端初始化

Master端進行群集初始化

[root]# kubeadm init --apiserver-advertise-address=192.168.1.73 --pod-network-cidr=192.168.0.0/16 --image-repository registry.aliyuncs.com/google_containers

 未完，待更新！！！