1、基础环境准备

• OpenStack主要把底层多台服务器资源分为三类：计算、网络、存储，用户可以通过OpenStack提供的web界面直接在OpenStack上启动虚拟机实例。
• 本次以openstack R版为例，其中各服务器角色如下：

• 设置时间同步

# yum 安装 ntp
yum -y install ntp ntpdate ntp-doc
# 校对系统时钟
ntpdate 0.cn.pool.ntp.org

• 设置hostname和host文件

#设置计算机名
hostnamectl set-hostname master
hostnamectl set-hostname node1
hostnamectl set-hostname node2

#设置host
echo "192.168.23.45 master " >> /etc/hosts
echo "192.168.23.46 node1 " >> /etc/hosts
echo "192.168.23.47 node2 " >> /etc/hosts

#发送到其余节点
scp /etc/hosts node1:/etc/ node2:/etc

• 关闭selinux、iptables和NetworkManager

#关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
#关闭selinux
setenforce 0
sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config

ssh node1 'sed -i 's@SELINUX=enforcing@SELINUX=disabled@g' /etc/selinux/config'
ssh node2 'sed -i 's@SELINUX=enforcing@SELINUX=disabled@g' /etc/selinux/config'
ssh node1 'setenforce 0 && getenforce'
ssh node2 'setenforce 0 && getenforce'

systemctl stop firewalld NetworkManager
systemctl disable firewalld NetworkManager 

ssh node1 'systemctl stop firewalld NetworkManager && systemctl disable firewalld NetworkManager'
ssh node2 'systemctl stop firewalld NetworkManager && systemctl disable firewalld NetworkManager'

2、基础包安装

• 由于每台服务器均是最小化安装，因此还需要安装一些基础包：

yum install -y vim wget tree lrzsz gcc gcc-c++ automake pcre pcre-devel zlib zlib-devel openssl openssl-devel iproute net-tools iotop lsof ntpdate telnet bridge-utils；

• 配置阿里云的base仓库和epel仓库包

[root@master ~]# rm -rf /etc/yum.repos.d/*.repo
[root@master ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
[root@master ~]#wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
[root@master ~]#scp /etc/yum.repos.d/Centos-Base.repo node1:/etc/yum.repos.d/
[root@master ~]#scp /etc/yum.repos.d/epel.repo node1:/etc/yum.repos.d/
[root@master ~]#scp /etc/yum.repos.d/Centos-Base.repo node2:/etc/yum.repos.d/
[root@master ~]#scp /etc/yum.repos.d/epel.repo node2:/etc/yum.repos.d/

• 配置OpenStack R版的yum仓库

[root@master ~]yum install centos-release-openstack-rocky -y

• 各节点安装python-openstackclient和openstack-selinux包

[root@master ~]yum install -y python-openstackclient openstack-selinux