openstack安装（liberty）--环境准备
注：完全参考官方文档实验，仅学习记录，后续不作说明。http://docs.openstack.org/liberty/install-guide-rdo/index.html
使用VBOX实验，创建2个虚拟机分别用于控制和计算节点，分配2个网卡，其中一个网卡可以使用“NAT网络”，将自动生成的网卡设置为10.0.0.1，作为虚拟机网关同时以便实体机能直接访问虚拟机。另一个网卡使用桥接模式。如果使用XSHELL连接，可以使用“NAT网络”中端口映射以便访问10.0.0.X。使用“NAT网络”而不是“NAT”的好处一可以定义IP地址段，二可以上网。其他节点仅需分配一个网卡，使用“NAT网络”。
一.环境准备
1.1配置网卡，设置静态IP地址和DNS，VBOX中网卡需要开启混杂模式，即”允许全部“
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#vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
#vi /etc/resolv.conf
#vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
#vi /etc/resolv.conf
1.2设置主机名称和HOSTS文件并PING测试
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# hostnamectl set-hostname controller1
# vi /etc/hosts
10.0.0.11 controller1 controller1
10.0.0.31 compute1
10.0.0.41 block1
10.0.0.51 object1
10.0.0.52 object2
# hostnamectl status
#hostnamectl set-hostname compute1
#vi /etc/hosts
10.0.0.11 controller1 controller1
10.0.0.31 compute1
10.0.0.41 block1
10.0.0.51 object1
10.0.0.52 object2
# hostnamectl status
1.3关闭防火墙和SELINUX
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# systemctl stop firewalld.service
# systemctl disable firewalld.service
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.
# vi /etc/selinux/config
SELINUX=disabled
1.4更新系统
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# yum update
2.1配置时间同步（controller1）
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# yum remove chrony
# yum install ntp
# vi /etc/ntp.conf
restrict 10.0.0.0 mask 255.255.255.0 nomodify notrap
server s2m.time.edu.cn
server 210.72.145.44
restrict 210.72.145.44 nomodify notrap noquery
server 127.127.0.1
fudge 127.127.0.1 stratum 10
# systemctl start ntpd.service
# systemctl enable ntpd.service
Created symlink from /etc/systemd/system/multi-user.target.wants/ntpd.service to /usr/lib/systemd/system/ntpd.service.
2.2配置节点时间同步（compute1）
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# yum remove chrony
# yum install ntp
# vi /etc/ntp.conf
server controller1
restrict controller1 nomodify notrap noquery
server 127.127.0.1
fudge 127.127.0.1 stratum 10
# systemctl start ntpd.service
# systemctl enable ntpd.service
Created symlink from /etc/systemd/system/multi-user.target.wants/ntpd.service to /usr/lib/systemd/system/ntpd.service.
# ntpstat
synchronised to NTP server (10.0.0.11) at stratum 5
time correct to within 113 ms
polling server every 64 s
# ntpdate -u 10.0.0.11
14 Jul 14:51:51 ntpdate: adjust time server 10.0.0.11 offset -0.011970 sec
# hwclock --systohc
3.1安装OpenStack packages
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# yum install centos-release-openstack-liberty
3.2更新系统
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# yum upgrade
3.3安装OpenStack客户端
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# yum install python-openstackclient
3.4如果开启了SELINUX，则需要安装如下包
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# yum install openstack-selinux
4.1数据库安装
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# yum install mariadb mariadb-server MySQL-python
4.2拷贝并编辑配置文件
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# cp /usr/share/mysql/my-medium.cnf /etc/my.cnf.d/mariadb_openstack.cnf
# vi /etc/my.cnf.d/mariadb_openstack.cnf
bind-address = 10.0.0.11
default-storage-engine = innodb
innodb_file_per_table
collation-server = utf8_general_ci
init-connect = 'SET NAMES utf8'
character-set-server = utf8
4.3启动和设置开机自启动
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# systemctl enable mariadb.service
# systemctl start mariadb.service
4.4设置数据库密码
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# mysql_secure_installation
4.5验证数据库配置
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# mysql -uroot -p
5.1安装mongodb （nosql数据库，仅安装Telemetry 时需要）
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# yum install mongodb-server mongodb
5.2编辑配置文件
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# vi /etc/mongod.conf
bind_ip = 10.0.0.11
smallfiles = true##此处可选配置，手册描述和实际有差，待确认
5.3启动和设置开机自启动
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# systemctl enable mongod.service
Created symlink from /etc/systemd/system/multi-user.target.wants/mongod.service to /usr/lib/systemd/system/mongod.service.
# systemctl start mongod.service
6.1安装消息队列rabbitmq
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# yum install rabbitmq-server
6.2启动和设置开机自启动
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# systemctl enable rabbitmq-server.service
Created symlink from /etc/systemd/system/multi-user.target.wants/rabbitmq-server.service to /usr/lib/systemd/system/rabbitmq-server.service.
# systemctl start rabbitmq-server.service
6.3添加用户并设置密码
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# rabbitmqctl add_user openstack openstack
Creating user "openstack" ...
6.4设置用户权限
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# rabbitmqctl set_permissions openstack ".*" ".*" ".*"
Setting permissions for user "openstack" in vhost "/" ...
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