CentOS7安装OpenStack-01.系统环境准备和相关组件安装

官方文档：https://docs.openstack.org

1.0.系统环境

生产测试应用的服务器最好是物理机，虚拟目前可以完成搭建测试体验
系统选择是目前的最新版本：CentOS Linux release 7.7.1908 (Core)
控制节点：Controller ：192.168.182.143
计算节点：Nova：192.168.182.142

1.1.配置域名解析

1）配置主机名

# 在控制节点上执行
hostnamectl set-hostname controller
echo '
# controller
192.168.182.143       controller
# compute1
192.168.182.142       compute1
'>>/etc/hosts

1.2.关闭防火墙和selinux

systemctl stop firewalld.service
systemctl disable firewalld.service
systemctl status firewalld.service

setenforce 0
getenforce
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux
grep SELINUX=disabled /etc/sysconfig/selinux

1.3.配置时间同步

1）在控制端配置时间同步服务

# 在所有的节点上执行 
yum install chrony -y

2）编辑配置文件确认有以下配置

vim /etc/chrony.conf
# 在控制节点上配置
# 去掉原有的server
server  ntp6.aliyun.com iburst
allow 192.168.182.0/24

3）重启ntp服务，并配置开机自启动

systemctl restart chronyd.service
systemctl status chronyd.service
systemctl enable chronyd.service
systemctl list-unit-files |grep chronyd.service

4）设置时区，同步时间

timedatectl set-timezone Asia/Shanghai
chronyc sources
timedatectl status

1.4.配置相关yum源

1）配置阿里云的base和epel源

mv -f /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

2）安装openstack-rocky的仓库

yum install centos-release-openstack-rocky -y
yum clean all
yum makecache

# 也可以手动创建OpenStack的阿里云yum源地址

echo '[centos-openstack-rocky]
name=CentOS-7 - OpenStack rocky
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/openstack-rocky/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud

[centos-openstack-rocky-test]
name=CentOS-7 - OpenStack rocky Testing
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/openstack-rocky/
gpgcheck=0
enabled=0

[centos-openstack-rocky-debuginfo]
name=CentOS-7 - OpenStack rocky - Debug
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud

[centos-openstack-rocky-source]
name=CentOS-7 - OpenStack rocky - Source
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/openstack-rocky/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud

[rdo-trunk-rocky-tested]
name=OpenStack rocky Trunk Tested
baseurl=http://mirrors.aliyun.com/centos/7/cloud/$basearch/rdo-trunk-rocky-tested/
gpgcheck=0
enabled=0'>/etc/yum.repos.d/CentOS-OpenStack-Rocky.repo

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