OpenStack架构
学习openstack的部署和运维之前，应当熟悉其架构和运行机制 openStack作为开源、可扩展、富有弹性的云操作系统;某设计基本原则如下:
按照不同的功能和通用性划分不同项目，拆分子系统
按照逻辑计划、规范子系统之间的通信
通过分层设计整个系统架构
不同的功能子系统间提供统一的API接口
OpenStack组件通信关系
基于AMQF协议的通信
用于每个项目内部各个组件之间的通信。
基于sQL的通信
用于各个项目内部的通信,
OpenStack环境部署
环境需求
控制节点ct：8g内存，300G硬盘，双网卡192.168.235.121,192.168.100.169，centos7最小化安装
控制节点c1：8g内存，300G硬盘，双网卡192.168.235.122,192.168.100.170，centos7最小化安装
控制节点c2：8g内存，300G硬盘，双网卡192.168.235.123,192.168.100.171，centos7最小化安装
安装
[root@localhost ~]# yum -y install net-tools bash-completion vim gcc gcc-c++ make pcre pcre-devel expat-devel cmake bzip2 lrzsz
[root@localhost ~]# yum -y install centos-release-openstack-train python-openstackclient openstack-selinux openstack-utils
配置host
[root@ct ~]# vi /etc/hosts
192.168.100.169 ct
192.168.100.170 c1
192.168.100.171 c2
三台设备免交互
[root@ct ~]# ssh-keygen -t rsa
[root@ct ~]# ssh-copy-id ct
[root@ct ~]# ssh-copy-id c1
[root@ct ~]# ssh-copy-id c2
设置时间同步
[root@ct ~]# yum -y install chrony
[root@ct ~]# vi /etc/chrony.conf
server 0.centos.pool.ntp.org iburst ##注释掉
server 1.centos.pool.ntp.org iburst ##注释掉
server 2.centos.pool.ntp.org iburst ##注释掉
server 3.centos.pool.ntp.org iburst ##注释掉
server ntp6.aliyun.com iburst ##配置阿里云
[root@ct ~]# systemctl enable chronyd ##永久开启时间同步服务器
[root@ct ~]# systemctl restart chronyd ##重启时间同步服务器
[root@ct ~]# chronyc sources ##使用 chronyc sources 命令查询时间同步信息
[root@ct ~]# crontab -e ##配置计划任务
*/2 * * * * /usr/bin/chronyc sources >>/var/log/chronyc.log
[root@ct ~]# crontab -l
*/2 * * * * /usr/bin/chronyc sources >> /var/log/chronyc.log
配置控制节点
安装mariadb
yum -y install mariadb mariadb-server python2-PyMySQL ##控制端连接mysql所需的模块
yum -y install libibverbs
[root@ct ~]# vim /etc/my.cnf.d/openstack.cnf
[mysqld]
bind-address = 192.168.100.169
default-storage-engine = innodb
innodb_file_per_table = on
max_connections = 4096
collation-server = utf8_general_ci
character-set-server = utf8
[root@ct my.cnf.d]# systemctl enable mariadb
[root@ct my.cnf.d]# systemctl start mariadb
执行mariadb的配置脚本
[root@ct my.cnf.d]# mysql_secure_installation
安装rabbitmq：控制端发送rabiitmq，node节点监听rabbitmq
[root@ct ~]# yum -y install rabbitmq-server
[root@ct ~]# systemctl enable rabbitmq-server.service
[root@ct ~]# systemctl start rabbitmq-server.service
创建消息队列用户，用于controler和计算节点连接rabbitmq
rabbitmqctl add_user openstack RABBIT_PASS
Creating user “openstack”
配置OpenStack用户操作权限
[root@ct ~]# rabbitmqctl set_permissions openstack “." ".” “.*”
[root@ct my.cnf.d]# rabbitmqctl add_user openstack RABBIT_PASS
Creating user "openstack"
[root@ct my.cnf.d]# rabbitmqctl set_permissions openstack ".*" ".*" ".*"
Setting permissions for user "openstack" in vhost "/"
[root@ct my.cnf.d]# rabbitmq-plugins list #查看插件列表
查看端口
[root@ct ~]# ss -natp | grep 5672
可访问192.168.235.156:15672
默认账号密码均为guest
安装memcached
[root@ct ~]# yum install -y memcached python-memcached
修改Memcached配置文件
[root@ct ~]# cat /etc/sysconfig/memcached
[root@ct my.cnf.d]# vi /etc/sysconfig/memcached
[root@ct my.cnf.d]# systemctl enable memcached
Created symlink from /etc/systemd/system/multi-user.target.wants/memcached.service to /usr/lib/systemd/system/memcached.service.
[root@ct my.cnf.d]# systemctl start memcached
[root@ct my.cnf.d]# netstat -nautp | grep 11211
tcp 0 0 192.168.100.60:11211 0.0.0.0:* LISTEN 31875/memcached
tcp 0 0 127.0.0.1:11211 0.0.0.0:* LISTEN 31875/memcached
tcp6 0 0 ::1:11211 :::* LISTEN 31875/memcached
安装etcd
[root@ct ~]# yum -y install etcd
[root@ct ~]# cd /etc/etcd/
[root@ct etcd]# vim etcd.conf
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="http://192.168.100.169:2380"
ETCD_LISTEN_CLIENT_URLS="http://192.168.100.169:2379"
ETCD_NAME="ct"
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://192.168.100.169:2380"
ETCD_ADVERTISE_CLIENT_URLS="http://192.168.100.169:2379"
ETCD_INITIAL_CLUSTER="ct=http://192.168.100.11:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster-01"
ETCD_INITIAL_CLUSTER_STATE="new"
[root@ct ~]# systemctl enable etcd.service
[root@ct ~]# systemctl start etcd.service
[root@ct ~]# netstat -anutp |grep 2379
[root@ct ~]# netstat -anutp |grep 2380
