前言
大二上学期学习Openstack，苦于百度与CSDN上没有对应版本的教程，学的十分艰难，在此，将我的Openstack云平台搭建过程写出，留给新手学习
准备工作：
VMware Workstation Pro 虚拟机 我使用版本：15.5.2 build-15785246
CentOS-7-x86_64-DVD-1511.iso
XianDian-IaaS-v2.2.iso
虚拟机配置 (controller和compute配置相同)：
内存 3G
处理器 2G
硬盘 50G
CD/DVD CentOS-7-x86_64-DVD-1511.iso
网络适配器 VMnet1
网络适配器2 VMnet2
controller和compute网络配置
| 主机名 | VMnet1 | VMnet2 |
| controller | 192.168.28.10 | 192.168.128.10 |
| compute | 192.168.28.20 | 192.168.128.20 |
controller改主机名字，关防火墙，设置主机映射开启虚拟机
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hostnamectl set-hostname controller
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
cat >>/etc/hosts<<eof
192.168.28.10 controller
192.168.28.20 compute
eofcompute
hostnamectl set-hostname compute
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
cat >>/etc/hosts<<eof
192.168.28.10 controller
192.168.28.20 compute
eofcontroller
接下来，进入opt目录，创建挂载点 centos 以及 iaas
cd /opt
mkdir centos iaas设置开机自动挂载镜像文件
cat >>/etc/fstab<<eof
/dev/cdrom /opt/centos iso9660 defaults 0 0
/opt/XianDian-IaaS-v2.2.iso /opt/iaas iso9660 defaults 0 0
eof挂载立即生效
mount -a 进入 /etc/yum.repos.d 目录，删除或移动里面的大写C开头的文件，否则后面会造成缓存错误，载创建repo源文件
cd /etc/yum.repos.d
mkdir bk
mv C* bk
cat >>/etc/yum.repos.d/local.repo<<eof
[centos]
name=centos
baseurl=file:///opt/centos
gpgcheck=0
enabled=1
[iaas]
name=iaas
baseurl=file:///opt/iaas/iaas-repo
gpgcheck=0
enabled=1
eof清除缓存，生成缓存
yum clean all
yum makecache出现提示，说明是成功了（不需要和我的完全一摸一样，因为iso版本的不同，生成的缓存也不同）
[root@controller ~]# yum makecache
已加载插件：fastestmirror
centos | 3.6 kB 00:00:00
iaas | 2.9 kB 00:00:00
(1/7): centos/filelists_db | 2.9 MB 00:00:00
(2/7): centos/group_gz | 155 kB 00:00:00
(3/7): iaas/filelists_db | 1.9 MB 00:00:00
(4/7): iaas/primary_db | 2.3 MB 00:00:00
(5/7): centos/primary_db | 2.8 MB 00:00:00
(6/7): iaas/other_db | 692 kB 00:00:00
(7/7): centos/other_db | 1.2 MB 00:00:00
Determining fastest mirrors
元数据缓存已建立注意，如果出现 下面展示 的段落信息，说明你之前的步骤出错了，可能是yum源没配置好，也可能是没挂载好，这里很坑
[root@compute yum.repos.d]# yum makecache
已加载插件：fastestmirror
One of the configured repositories failed (未知),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:
1. Contact the upstream for the repository and get them to fix the problem.
2. Reconfigure the baseurl/etc. for the repository, to point to a working
upstream. This is most often useful if you are using a newer
distribution release than is supported by the repository (and the
packages for the previous distribution release still work).
3. Disable the repository, so yum won't use it by default. Yum will then
just ignore the repository until you permanently enable it again or use
--enablerepo for temporary usage:
yum-config-manager --disable <repoid>
4. Configure the failing repository to be skipped, if it is unavailable.
Note that yum will try to contact the repo. when it runs most commands,
so will have to try and fail each time (and thus. yum will be be much
slower). If it is a very temporary problem though, this is often a nice
compromise:
yum-config-manager --save --setopt=<repoid>.skip_if_unavailable=true
Cannot find a valid baseurl for repo: centos如果是出现了 /var/run/yum.pid 的消息
执行下面这段命令即可
rm -rf /var/run/yum.pid接下来安装vsftpd和iaas-xiandian
yum install iaas-xiandian vsftpd -y在controller上安装 ftp（文件传输）服务
增加匿名访问
cat >>/etc/vsftpd/vsftpd.conf<<eof
anon_root=/opt
eof
systemctl restart network
systemctl start vsftpd
systemctl enable vsftpd接下来配置xiandian的openrc.sh应答文件（一个字都不能错）
sed -i 's/.//' /etc/xiandian/openrc.sh
sed -i 's/PASS=/PASS=000000/g' /etc/xiandian/openrc.sh
sed -i 's/HOST_IP=/HOST_IP=192.168.28.10/g' /etc/xiandian/openrc.sh
sed -i 's/HOST_NAME=/HOST_NAME=controller/g' /etc/xiandian/openrc.sh
sed -i 's/HOST_IP_NODE=/HOST_IP_NODE=192.168.28.20/g' /etc/xiandian/openrc.sh
sed -i 's/HOST_NAME_NODE=/HOST_NAME_NODE=compute/g' /etc/xiandian/openrc.sh
sed -i 's/RABBIT_USER=/RABBIT_USER=openstack/g' /etc/xiandian/openrc.sh
sed -i 's/DOMAIN_NAME=/DOMAIN_NAME=demo/g' /etc/xiandian/openrc.sh
sed -i 's/METADATA_SECRET=/METADATA_SECRET=000000/g' /etc/xiandian/openrc.sh
sed -i 's/INTERFACE_NAME=/INTERFACE_NAME=ens34/g' /etc/xiandian/openrc.sh
至此，controller停止配置，开始compute配置
compute
查看是否连接到controller的 opt/ 下面的挂载文件
[root@compute yum.repos.d]# curl ftp://192.168.28.10
-rw-r--r-- 1 0 0 2851502080 Jun 04 2020 XianDian-IaaS-v2.2.iso
dr-xr-xr-x 8 0 0 2048 Dec 09 2015 centos
drwxr-xr-x 4 0 0 2048 Nov 06 2017 iaas进入opt目录，创建centos和iaas文件，移动或删除大写C开头文件，创建一个ftp.repo源文件
cd /opt
mkdir centos iaas
cd /etc/yum.repos.d/
mkdir bk
mv C* bk
touch ftp.repo进入 /etc/yum.repos.d/ftp.repo 写入
cat >>/etc/yum.repos.d/ftp.repo<<eof
[centos]
name=centos
baseurl=ftp://192.168.28.10/centos
gpgcheck=0
enabled=1
[iaas]
name=iaas
baseurl=ftp://192.168.28.10/iaas/iaas-repo
gpgcheck=0
enabled=1
eof清除缓存，生成缓存
yum clean all
yum makecache如出现以下画面，说明成功
[root@compute yum.repos.d]# yum makecache
已加载插件：fastestmirror
centos | 3.6 kB 00:00:00
iaas | 2.9 kB 00:00:00
(1/7): centos/group_gz | 155 kB 00:00:00
(2/7): centos/filelists_db | 2.9 MB 00:00:00
(3/7): centos/primary_db | 2.8 MB 00:00:00
(4/7): centos/other_db | 1.2 MB 00:00:00
(5/7): iaas/filelists_db | 1.9 MB 00:00:00
(6/7): iaas/primary_db | 2.3 MB 00:00:00
(7/7): iaas/other_db | 692 kB 00:00:00
Determining fastest mirrors
元数据缓存已建立下载 iaas-xiandain 进入 /etc/xiandian ，将openrc.sh 改名为openrc.sh.bk 备份 以防出现错误
再将 controller(192.168.28.10)中的 /etc/xiandian/openrc.sh 文件传输到 本机
yum -y install iaas-xiandian
cd /etc/xiandian
mv openrc.sh openrc.sh.bk
scp 192.168.28.10:/etc/xiandian/openrc.sh openrc.sh执行安装脚本
两个节点均执行初始化脚本
iaas-pre-host.sh注意：执行需要一段时间，不要去按回车什么的了，在出现 【reboot】提示后，必须重启，否则之后的实例发不出去，问题很大！！！
两台均重启
reboot重新启动虚拟机
控制节点安装 （controller）
cd /usr/local/bin
cat >>/usr/local/bin/all-in-one.sh<<eof
iaas-install-mysql.sh
iaas-install-keystone.sh
iaas-install-glance.sh
iaas-install-nova-controller.sh
iaas-install-neutron-controller.sh
iaas-install-neutron-controller-gre.sh
iaas-install-dashboard.sh
eof
source all-in-one.sh计算节点安装（compute）
cd /usr/local/bin
cat >>/usr/local/bin/all-in-one.sh<<eof
iaas-install-nova-compute.sh
iaas-install-neutron-compute.sh
iaas-install-neutron-compute-gre.sh
eof
source all-in-one.sh安装需要很长时间，请耐心等待
执行完成后
使用Chrome浏览器访问（其他浏览器不太好，造成访问不到）
http://计算节点IP/dashboard
我的计算节点IP为 192.168.28.10
所以我访问
http://192.168.28.10/dashboard
访问成功界面
域：demo
用户名：admin
密码：000000
进入
