centos8.5安装openstack V版（解决centos停服后yum源问题）

1、说明

三台物理服务器：1台控制节点，1台计算节点

操作系统版本：centos8.5

安装源：使用阿里永久镜像站、本地镜像源

2、环境规划

主机名	IP	角色	备注
controller	192.168.6.10	控制/网络/计算节点	开启虚拟化引擎
computer	192.168.6.20	计算节点	开启虚拟化引擎

3、系统环境配置

3.1、网络配置

3.1.1 控制节点

网卡设置

[root@controller ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens01

TYPE=Ethernet

BOOTPROTO=none

NAME=ens01

DEVICE=ens01

ONBOOT=yes

PROXY_METHOD=none

BROWSER_ONLY=no

IPADDR=192.168.6.10

PREFIX=24

GATEWAY=192.168.6.1

DNS1=114.114.114.114

DEFROUTE=yes

IPV4_FAILURE_FATAL=no

IPV6INIT=no

UUID=ea74cf24-c2a2-ecee-3747-a2d76d46f93b

#重启网络

[root@controller ~]# ifdown ens01 && ifup ens01

Connection 'ens01' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/4)

Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)

关闭防火墙

[root@controller ~]# systemctl stop firewalld.service

[root@controller ~]# systemctl disable firewalld.service

Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.

Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

关闭 SELinux

[root@controller ~]# setenforce 0

[root@controller ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

关闭 NetworkManager

NetworkManager 会和 openstack 网络组件产生冲突，从而导致告警或错误，告警如下：

Warning: NetworkManager is active on 192.168.6.10, 192.168.6.20.

OpenStack networking currently does not work on systems that have the Network Manager service enabled.

[root@controller ~]# systemctl stop NetworkManager

[root@controller ~]# systemctl disable NetworkManager

Removed /etc/systemd/system/multi-user.target.wants/NetworkManager.service.

Removed /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.

Removed /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service.

#服务关闭后，如果需要重启节点，有可能无法获取IP地址；可以手工启动服务，获取IP地址后，再次关闭即可。

3.1.2 计算节点

网卡设置

[root@computer ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens01

TYPE=Ethernet

BOOTPROTO=none

NAME=ens160

DEVICE=ens160

ONBOOT=yes

PROXY_METHOD=none

BROWSER_ONLY=no

IPADDR=192.168.6.20

PREFIX=24

GATEWAY=192.168.6.1

DNS1=114.114.114.114

DEFROUTE=yes

IPV4_FAILURE_FATAL=no

IPV6INIT=no

UUID=f176a607-2cc5-420f-bb6f-b72e7ab5a1a5

#重启网络

[root@computer ~]# ifdown ens01 && ifup ens01

Connection 'ens01' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)

Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/6)

关闭防火墙

[root@computer ~]# systemctl stop firewalld.service

[root@computer ~]# systemctl disable firewalld.service

Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.

Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service

关闭 SELinux

[root@computer ~]# setenforce 0

[root@computer ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

关闭 NetworkManager

[root@computer ~]# systemctl stop NetworkManager

[root@computer ~]# systemctl disable NetworkManager

Removed /etc/systemd/system/multi-user.target.wants/NetworkManager.service.

Removed /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.

Removed /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service.

#服务关闭后，如果需要重启节点，有可能无法获取IP地址；可以手工启动服务，获取IP地址后，再次关闭即可。

3.2 IP及主机名设置

3.2.1 控制节点

[root@controller ~]# echo '192.168.6.10 controller' >> /etc/hosts

[root@controller ~]# echo '192.168.6.10 computer' >> /etc/hosts

[root@controller ~]# cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.6.10 controller

192.168.6.20 computer

#拷贝至计算节点

[root@controller ~]# scp /etc/hosts root@computer:/etc/

The authenticity of host 'computer (192.168.6.20)' can't be established.

ECDSA key fingerprint is SHA256:46NRy6BtLjvAXpdXFKaLvAeA93QxkYRAtMaBxxiFRkg.

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