安装OpensStack（R版本安装）
官方地址：https://docs.openstack.org/rocky/install/
1、准备系统环境
以下最小需求支持概念验证环境，使用核心服务和几个实例
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控制节点: 1 处理器, 4 GB 内存, 及5 GB 存储
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计算节点: 1 处理器, 2 GB 内存, 及10 GB 存储
实际准备环境：
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centos-170 内存4G+35G存储，cpu开启虚拟化 IP：192.168.223.170
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centos-171 内存1G+35G存储，cpu开启虚拟化 IP：192.168.223.171
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centos-172 内存1G+20G存储，cpu开启虚拟化 IP：192.168.223.172（备用扩展compute2）
系统内核版本：
[root@controller ~]# cat /etc/redhat-release
CentOS Linux release 7.7.1908 (Core)
[root@controller ~]# uname -a
Linux controller 3.10.0-1062.12.1.el7.x86_64 #1 SMP Tue Feb 4 23:02:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
官方架构图：
修改主机名，IP地址网关，修改host解析*
1、修改主机名，IP地址网关
[root@controller ~]# hostnamectl set-hostname controller
[root@compute1 ~]# hostnamectl set-hostname compute1
[root@controller ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
[root@compute1 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
1、修改主机名，IP地址网关
[root@controller ~]# hostnamectl set-hostname controller
[root@compute1 ~]# hostnamectl set-hostname compute1
[root@controller ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
[root@compute1 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
[root@controller ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=eth0
UUID=d501cb9b-5f4c-41be-94b8-9b1073850fda
DEVICE=eth0
ONBOOT=yes
IPADDR=192.168.223.170
NETMASK=255.255.255.0
GATEWAY=192.168.223.2
DNS1=223.5.5.5
2、修改hosts解析
[root@controller ~]# cat /etc/hosts
[root@compute1 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.223.170 controller
192.168.223.171 compute1
3、测试ping百度
[root@controller ~]# ping -c2 www.baidu.com
[root@compute1 ~]# ping www.baidu.com -c2
PING www.a.shifen.com (39.156.66.14) 56(84) bytes of data.
64 bytes from 39.156.66.14 (39.156.66.14): icmp_seq=1 ttl=128 time=10.0 ms
64 bytes from 39.156.66.14 (39.156.66.14): icmp_seq=2 ttl=128 time=16.4 ms