部署 Kubernetes + KubeVirt

一、基础环境准备

在openstack平台上创建两台虚拟机：
主: 10.104.43.110
备: 10.104.43.118

1、修改主机名并配置映射

# 所有节点修改主机名
[root@k8s-h-master ~]# hostnamectl set-hostname master
[root@k8s-h-master ~]# bash
[root@master ~]# 
[root@k8s-h-node ~]# hostnamectl set-hostname node
[root@k8s-h-node ~]# bash
[root@node ~]# 

# 所有节点配置映射
[root@master ~]# echo '
> 10.104.43.110 master
> 10.104.43.118 node' >> /etc/hosts
[root@node ~]# echo '
> 10.104.43.110 master
> 10.104.43.118 node' >> /etc/hosts

2、配置关闭防火墙和selinux

# 所有节点关闭selinux
[root@master ~]# sed  -i 's/SELINUX=enforcing/SELINUX=disabled/g'  /etc/selinux/config;
[root@master ~]# setenforce 0
[root@node ~]# sed  -i 's/SELINUX=enforcing/SELINUX=disabled/g'  /etc/selinux/config;
[root@node ~]# setenforce 0

# 所有节点关闭防火墙
[root@master ~]# systemctl stop firewalld.service
[root@master ~]# systemctl disable firewalld.service
[root@node ~]# systemctl stop firewalld.service
[root@node ~]# systemctl disable firewalld.service

# 关闭swap
[root@master ~]# swapoff -a
[root@master ~]# sed -ri 's/.*swap.*/#&/' /etc/fstab
[root@node ~]# swapoff -a
[root@node ~]# sed -ri 's/.*swap.*/#&/' /etc/fstab

# 允许iptables检查桥接流量
[root@master ~]# cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
> br_netfilter
> EOF
br_netfilter
[root@master ~]# cat /etc/modules-load.d/k8s.conf 
br_netfilter
[root@master ~]# cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
> net.bridge.bridge-nf-call-ip6tables = 1
> net.bridge.bridge-nf-call-iptables = 1
> EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
[root@master ~]# sudo sysctl --system

[root@node ~]# cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
> br_netfilter
> EOF
br_netfilter
[root@node ~]# cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
> net.bridge.bridge-nf-call-ip6tables = 1
> net.bridge.bridge-nf-call-iptables = 1
> EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
[root@node ~]# sysctl --system

3、配置yum源

# 删除默认yum源
[root@master yum.repos.d]# rm -rf /etc/yum.repos.d/*
[root@node yum.repos.d]# rm -rf /etc/yum.repos.d/*

# 下载阿里云源
[root@master yum.repos.d]# curl -o /etc/yum.repos.d/CentOS-Base.repo  http://mirrors.aliyun.com/repo/Centos-7.repo
[root@node yum.repos.d]# curl -o /etc/yum.repos.d/CentOS-Base.repo  http://mirrors.aliyun.com/repo/Centos-7.repo
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  2523  100  2523    0     0  33599      0 --:--:-- --:--:-- --:--:-- 34561

# 下载docker-ce源
[root@master yum.repos.d]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
[root@node yum.repos.d]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
已加载插件：fastestmirror
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo

4、安装docker

# 安装docker
[root@master yum.repos.d]# yum install -y docker-ce-20.10.7 docker-ce-cli-20.10.7  containerd.io-1.4.6
[root@node yum.repos.d]# yum install -y docker-ce-20.10.7 docker-ce-cli-20.10.7  containerd.io-1.4.6