openstack项目【day24】：OpenStack mitaka部署

前言：

openstack的部署非常简单，简单的前提建立在扎实的理论功底，本人一直觉得，玩技术一定是理论指导实践，网上遍布个种搭建方法都可以实现一个基本的私有云环境，但是诸位可曾发现，很多配置都是重复的，为何重复？到底什么位置该不该配？具体配置什么参数？很多作者本人都搞不清楚，今天本人就是要在这里正本清源。

介绍：本次案列为基本的三节点部署，集群案列后期有时间再整理

一：网络：

1.管理网络：172.16.209.0/24

2.数据网络：1.1.1.0/24

二：操作系统：CentOS Linux release 7.2.1511 (Core)

三：内核：3.10.0-327.el7.x86_64

四：openstack版本mitaka

效果图：

OpenStack mitaka部署

约定：

1.在修改配置的时候，切勿在某条配置后加上注释，可以在配置的上面或者下面加注释

2.相关配置一定是在标题后追加，不要在原有注释的基础上修改

PART1：环境准备（在所有节点执行）

一：每台机器设置以下内容：

设置固定ip，

添加hosts文件解析

设置主机名

关闭firewalld，selinux

可选操作：在控制节点制作密钥登录其他节点（可以方便后面的操作，真实环境也极有必要准备一台单独的管理机），在控制节点修改/etc/hosts并scp到其他节点

/etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

172.16.209.115 controller01

172.16.209.117 compute01

172.16.209.119 network02

二：获取软件包源

（在所有节点执行），即配置yum源，下述两种方式请按个人情况选择一种，推荐方式一

方式一：自定义的yum源

本人从官网下载包后自定制的yum源，自定制源的好处是：严格地控制软件包版本，保持平台内主机版本的一致性和可控性，具体做法如下

找一个服务器，作为yum源（同时也可以作为cobbler或pxe主机）
上传openstack-mitaka-rpms.tar.gz
tar xvf openstack-mitaka-rpms.tar.gz -C /
在这台机器上安装httpd并且启动，设置开机启动
ln -s /mitaka-rpms /var/www/html/

然后每台机器配置yum源

[mitaka]

name=mitaka repo

baseurl=http://172.16.209.100/mitaka-rpms/

enabled=1

gpgcheck=0

方式二：下载安装官网的源

自定义yum源的包其实也都是来自于官网，只不过，官网经常会更新包，一个包的更新可能会导致一些版本兼容性问题，所以推荐使用方式一，但如果只是测试而非生产环境，方式二是一种稍微便捷的方式

基于centos系统，在所有节点上执行：

yum install centos-release-openstack-mitaka -y

基于redhat系统，在所有节点上执行：

yum install https://rdoproject.org/repos/rdo-release.rpm -y #红帽系统请去掉epel源，否则会跟这里的源有冲突

三、制作yum缓存并更新系统（在所有节点执行）

yum makecache && yum install vim net-tools -y&& yum update -y

小知识点：

yum -y update

升级所有包，改变软件设置和系统设置,系统版本内核都升级

yum -y upgrade

升级所有包，不改变软件设置和系统设置，系统版本升级，内核不改变

四关闭yum自动更新（在所有节点执行）

CentOS7最小化安装后默认yum会自动下载更新，这对许多生产系统是不需要的，可以手动关闭它

[root@engine cron.weekly]# cd /etc/yum

[root@engine yum]# ls

fssnap.d  pluginconf.d  protected.d  vars  version-groups.conf  yum-cron.conf  yum-cron-hourly.conf

编辑yum-cron.conf，将download_updates = yes改为no即可

ps：yum install yum-plugin-priorities -y #如果不想关闭自动更新，那么可以安装这个插件，来设定升级的优先级，从官网下载更新而不是从一些乱七八糟的第三方源

五预装包（在所有节点执行）

yum install python-openstackclient -y

yum install openstack-selinux -y

六时间服务部署

yum install chrony -y  #（在所有节点执行）

控制节点：

修改配置：

/etc/chrony.conf

server ntp.staging.kycloud.lan iburst

allow 管理网络网段ip/24

启服务：

systemctl enable chronyd.service

systemctl start chronyd.service

其余节点：

修改配置：

/etc/chrony.conf

server 控制节点ip iburst

启服务

    systemctl enable chronyd.service

    systemctl start chronyd.service

时区不是Asia/Shanghai需要改时区：

# timedatectl set-local-rtc 1 # 将硬件时钟调整为与本地时钟一致, 0 为设置为 UTC 时间

# timedatectl set-timezone Asia/Shanghai # 设置系统时区为上海

其实不考虑各个发行版的差异化, 从更底层出发的话, 修改时间时区比想象中要简单:

# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

验证：

每台机器执行：

chronyc sources

在S那一列包含*号，代表同步成功（可能需要花费几分钟去同步，时间务必同步）

七：部署mariadb数据库

控制节点：

yum install mariadb mariadb-server python2-PyMySQL -y

编辑：

/etc/my.cnf.d/openstack.cnf

[mysqld]

bind-address = 控制节点管理网络ip

default-storage-engine = innodb

innodb_file_per_table

max_connections = 4096

collation-server = utf8_general_ci

character-set-server = utf8

启服务：

systemctl enable mariadb.service

systemctl start mariadb.service

mysql_secure_installation

八：为Telemetry 服务部署MongoDB

控制节点：

yum install mongodb-server mongodb -y

编辑：/etc/mongod.conf

bind_ip = 控制节点管理网络ip

smallfiles = true

启动服务：

systemctl enable mongod.service

systemctl start mongod.service

九：部署消息队列rabbitmq(验证方式:http://172.16.209.104:15672/ 用户:guest 密码:guest)

控制节点：

yum install rabbitmq-server -y

启动服务：

systemctl enable rabbitmq-server.service

systemctl start rabbitmq-server.service

新建rabbitmq用户密码：

rabbitmqctl add_user openstack che001

为新建的用户openstack设定权限：

rabbitmqctl set_permissions openstack ".*" ".*" ".*"

十：部署memcached缓存（为keystone服务缓存tokens）

控制节点：

yum install memcached python-memcached -y

启动服务：

systemctl enable memcached.service

systemctl start memcached.service

PART2：认证服务keystone部署

一：安装和配置服务

1.建库建用户

mysql -u root -p

CREATE DATABASE keystone;

GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'localhost' \

  IDENTIFIED BY 'che001';

GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'%' \

  IDENTIFIED BY 'che001';

flush privileges;

2.yum install openstack-keystone httpd mod_wsgi -y

3.编辑/etc/keystone/keystone.conf

[DEFAULT]

admin_token = che001 #建议用命令制作token:openssl rand -hex 10

[database]

connection = mysql+pymysql://keystone:che001@controller01/keystone

[token]

provider = fernet

#Token Provider：UUID, PKI, PKIZ, or Fernet #http://blog.csdn.net/miss_yang_cloud/article/details/49633719

4.同步修改到数据库

su -s /bin/sh -c "keystone-manage db_sync" keystone

5.初始化fernet keys

keystone-manage fernet_setup --keystone-user keystone --keystone-group keystone

6.配置apache服务

编辑：/etc/httpd/conf/httpd.conf

ServerName controller01

编辑：/etc/httpd/conf.d/wsgi-keystone.conf

新增配置

Listen 5000

Listen 35357

<VirtualHost *:5000>

    WSGIDaemonProcess keystone-public processes=5 threads=1 user=keystone group=keystone display-name=%{GROUP}

    WSGIProcessGroup keystone-public

    WSGIScriptAlias / /usr/bin/keystone-wsgi-public

    WSGIApplicationGroup %{GLOBAL}

    WSGIPassAuthorization On

    ErrorLogFormat "%{cu}t %M"

    ErrorLog /var/log/httpd/keystone-error.log

    CustomLog /var/log/httpd/keystone-access.log combined

    <Directory /usr/bin>

        Require all granted

    </Directory>

</VirtualHost>

<VirtualHost *:35357>

    WSGIDaemonProcess keystone-admin processes=5 threads=1 user=keystone group=keystone display-name=%{GROUP}

    WSGIProcessGroup keystone-admin

    WSGIScriptAlias / /usr/bin/keystone-wsgi-admin

    WSGIApplicationGroup %{GLOBAL}

    WSGIPassAuthorization On

    ErrorLogFormat "%{cu}t %M"

    ErrorLog /var/log/httpd/keystone-error.log

    CustomLog /var/log/httpd/keystone-access.log combined

    <Directory /usr/bin>

        Require all granted

    </Directory>

</VirtualHost>

7.启动服务:

systemctl enable httpd.service

systemctl restart httpd.service #因为之前自定义基于http协议的yum源时已经启动过了httpd，所以此处需要restart

二：创建服务实体和访问端点

1.实现配置管理员环境变量，用于获取后面创建的权限

export OS_TOKEN=che001

export OS_URL=http://controller01:35357/v3

export OS_IDENTITY_API_VERSION=3

2.基于上一步给的权限，创建认证服务实体（目录服务）

export OS_TOKEN=che001

export OS_URL=http://controller01:35357/v3

export OS_IDENTITY_API_VERSION=3

--name keystone --description "OpenStack Identity" identity

3.基于上一步建立的服务实体，创建访问该实体的三个api端点

openstack endpoint create --region RegionOne \

  identity public http://controller01:5000/v3

openstack endpoint create --region RegionOne \

  identity internal http://controller01:5000/v3

openstack endpoint create --region RegionOne \

  identity admin http://controller01:35357/v3

三：创建域，租户，用户，角色，把四个元素关联到一起

建立一个公共的域名：

openstack domain create --description "Default Domain" default

管理员：admin

openstack project create --domain default \

  --description "Admin Project" admin

openstack user create --domain default \

  --password-prompt admin

openstack role create admin

openstack role add --project admin --user admin admin

普通用户：demo

openstack project create --domain default \

  --description "Demo Project" demo

openstack user create --domain default \

  --password-prompt demo

openstack role create user

openstack role add --project demo --user demo user

为后续的服务创建统一租户service

解释：后面每搭建一个新的服务都需要在keystone中执行四种操作：1.建租户 2.建用户 3.建角色 4.做关联

后面所有的服务公用一个租户service，都是管理员角色admin，所以实际上后续的服务安装关于keysotne

的操作只剩2，4

openstack project create --domain default \

  --description "Service Project" service

四：验证操作：

编辑：/etc/keystone/keystone-paste.ini

在[pipeline:public_api], [pipeline:admin_api], and [pipeline:api_v3] 三个地方

移走：admin_token_auth

unset OS_TOKEN OS_URL

openstack --os-auth-url http://controller01:35357/v3 \

  --os-project-domain-name default --os-user-domain-name default \

  --os-project-name admin --os-username admin token issue

Password:

+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

| Field      | Value                                                                                                                                                                                   |

+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

| expires    | 2016-08-17T08:29:18.528637Z                                                                                                                                                             |

| id         | gAAAAABXtBJO-mItMcPR15TSELJVB2iwelryjAGGpaCaWTW3YuEnPpUeg799klo0DaTfhFBq69AiFB2CbFF4CE6qgIKnTauOXhkUkoQBL6iwJkpmwneMo5csTBRLAieomo4z2vvvoXfuxg2FhPUTDEbw-DPgponQO-9FY1IAEJv_QV1qRaCRAY0 |

| project_id | 9783750c34914c04900b606ddaa62920                                                                                                                                                        |

| user_id    | 8bc9b323a3b948758697cb17da304035                                                                                                                                                        |

+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

五：新建客户端脚本文件

管理员：admin-openrc

export OS_PROJECT_DOMAIN_NAME=default

export OS_USER_DOMAIN_NAME=default

export OS_PROJECT_NAME=admin

export OS_USERNAME=admin

export OS_PASSWORD=che001

export OS_AUTH_URL=http://controller01:35357/v3

export OS_IDENTITY_API_VERSION=3

export OS_IMAGE_API_VERSION=2

普通用户demo：demo-openrc

export OS_PROJECT_DOMAIN_NAME=default

export OS_USER_DOMAIN_NAME=default

export OS_PROJECT_NAME=demo

export OS_USERNAME=demo

export OS_PASSWORD=che001

export OS_AUTH_URL=http://controller01:5000/v3

export OS_IDENTITY_API_VERSION=3

export OS_IMAGE_API_VERSION=2

效果：

source admin-openrc

[root@controller01 ~]# openstack token issue

part3：部署镜像服务

一：安装和配置服务

1.建库建用户

mysql -u root -p

CREATE DATABASE glance;

GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' \

  IDENTIFIED BY 'che001';

GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' \

  IDENTIFIED BY 'che001';

flush privileges;

2.keystone认证操作：

上面提到过：所有后续项目的部署都统一放到一个租户service里，然后需要为每个项目建立用户，建管理员角色，建立关联

. admin-openrc

openstack user create --domain default --password-prompt glance

openstack role add --project service --user glance admin

建立服务实体

openstack service create --name glance \

  --description "OpenStack Image" image

建端点

openstack endpoint create --region RegionOne \

  image public http://controller01:9292

openstack endpoint create --region RegionOne \

  image internal http://controller01:9292

openstack endpoint create --region RegionOne \

  image admin http://controller01:9292

3.安装软件

yum install openstack-glance -y

4.初始化存放镜像的存储设备，此处我们暂时用本地存储，但是无论哪种存储，都应该在glance启动前就已经有了，否则glance启动时通过驱动程序检索不到存储设备，即在glance启动后新建的存储设备无法被glance识别到，需要重新启动glance才可以，因此我们将下面的步骤提到了最前面。

新建目录：

mkdir -p /var/lib/glance/images/

chown glance. /var/lib/glance/images/

5.修改配置：

编辑：/etc/glance/glance-api.conf

[database]

#这里的数据库连接配置是用来初始化生成数据库表结构,不配置无法生成数据库表结构

#glance-api不配置database对创建vm无影响，对使用metada有影响

#日志报错:ERROR glance.api.v2.metadef_namespaces

connection = mysql+pymysql://glance:che001@controller01/glance

[keystone_authtoken]

auth_url = http://controller01:5000

memcached_servers = controller01:11211

auth_type = password

project_domain_name = default

user_domain_name = default

project_name = service

username = glance

password = che001

[paste_deploy]

flavor = keystone

[glance_store]

stores = file,http

default_store = file

filesystem_store_datadir = /var/lib/glance/images/

编辑：/etc/glance/glance-registry.conf

[database]

#这里的数据库配置是用来glance-registry检索镜像元数据

connection = mysql+pymysql://glance:che001@controller01/glance

同步数据库：（此处会报一些关于future的问题，自行忽略）

su -s /bin/sh -c "glance-manage db_sync" glance

启动服务：

systemctl enable openstack-glance-api.service \

openstack-glance-registry.service

systemctl start openstack-glance-api.service \

openstack-glance-registry.service

二：验证操作：

. admin-openrc

wget http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img

（本地下载：wget http://172.16.209.100/cirros-0.3.4-x86_64-disk.img）

openstack image create "cirros" \

  --file cirros-0.3.4-x86_64-disk.img \

  --disk-format qcow2 --container-format bare \

  --public

openstack image list

part4：部署compute服务

一：控制节点配置

1.建库建用户

CREATE DATABASE nova_api;

CREATE DATABASE nova;

GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' \

  IDENTIFIED BY 'che001';

GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' \

  IDENTIFIED BY 'che001';

GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' \

  IDENTIFIED BY 'che001';

GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' \

  IDENTIFIED BY 'che001';

flush privileges;

2.keystone相关操作

. admin-openrc

openstack user create --domain default \

  --password-prompt nova

openstack role add --project service --user nova admin

openstack service create --name nova \

  --description "OpenStack Compute" compute

openstack endpoint create --region RegionOne \

  compute public http://controller01:8774/v2.1/%\(tenant_id\)s

openstack endpoint create --region RegionOne \

  compute internal http://controller01:8774/v2.1/%\(tenant_id\)s

openstack endpoint create --region RegionOne \

  compute admin http://controller01:8774/v2.1/%\(tenant_id\)s

3.安装软件包：

yum install openstack-nova-api openstack-nova-conductor \

openstack-nova-console openstack-nova-novncproxy \
openstack-nova-scheduler -y

4.修改配置：

编辑/etc/nova/nova.conf

[DEFAULT]

enabled_apis = osapi_compute,metadata

rpc_backend = rabbit

auth_strategy = keystone

#下面的为管理ip

my_ip = 172.16.209.115

use_neutron = True

firewall_driver = nova.virt.firewall.NoopFirewallDriver

[api_database]

connection = mysql+pymysql://nova:che001@controller01/nova_api

[database]

connection = mysql+pymysql://nova:che001@controller01/nova

[oslo_messaging_rabbit]

rabbit_host = controller01

rabbit_userid = openstack

rabbit_password = che001

[keystone_authtoken]

auth_url = http://controller01:5000

memcached_servers = controller01:11211

auth_type = password

project_domain_name = default

user_domain_name = default

project_name = service

username = nova

password = che001

[vnc]

#下面的为管理ip

vncserver_listen = 172.16.209.115

#下面的为管理ip

vncserver_proxyclient_address = 172.16.209.115

[oslo_concurrency]

lock_path = /var/lib/nova/tmp

5.同步数据库：（此处会报一些关于future的问题，自行忽略）

su -s /bin/sh -c "nova-manage api_db sync" nova

su -s /bin/sh -c "nova-manage db sync" nova

6.启动服务

systemctl enable openstack-nova-api.service \

  openstack-nova-consoleauth.service openstack-nova-scheduler.service \

  openstack-nova-conductor.service openstack-nova-novncproxy.service

systemctl start openstack-nova-api.service \

  openstack-nova-consoleauth.service openstack-nova-scheduler.service \

  openstack-nova-conductor.service openstack-nova-novncproxy.service

二：计算节点配置

1.安装软件包：

yum install openstack-nova-compute libvirt-daemon-lxc -y

2.修改配置：

编辑/etc/nova/nova.conf

[DEFAULT]

rpc_backend = rabbit

auth_strategy = keystone

#计算节点管理网络ip

my_ip = 172.16.209.117

use_neutron = True

firewall_driver = nova.virt.firewall.NoopFirewallDriver

[oslo_messaging_rabbit]

rabbit_host = controller01

rabbit_userid = openstack

rabbit_password = che001

[vnc]

enabled = True

vncserver_listen = 0.0.0.0

#计算节点管理网络ip

vncserver_proxyclient_address = 172.16.209.117

#控制节点管理网络ip

novncproxy_base_url = http://172.16.209.115:6080/vnc_auto.html

[glance]

api_servers = http://controller01:9292

[oslo_concurrency]

lock_path = /var/lib/nova/tmp

3.如果在不支持虚拟化的机器上部署nova，请确认

egrep -c '(vmx|svm)' /proc/cpuinfo结果为0

则编辑/etc/nova/nova.conf

[libvirt]

virt_type = qemu

4.启动服务

systemctl enable libvirtd.service openstack-nova-compute.service

systemctl start libvirtd.service openstack-nova-compute.service

三：验证

控制节点

[root@controller01 ~]# source admin-openrc

[root@controller01 ~]# openstack compute service list

+----+------------------+--------------+----------+---------+-------+----------------------------+

| Id | Binary           | Host         | Zone     | Status  | State | Updated At                 |

+----+------------------+--------------+----------+---------+-------+----------------------------+

|  1 | nova-consoleauth | controller01 | internal | enabled | up    | 2016-08-17T08:51:37.000000 |

|  2 | nova-conductor   | controller01 | internal | enabled | up    | 2016-08-17T08:51:29.000000 |

|  8 | nova-scheduler   | controller01 | internal | enabled | up    | 2016-08-17T08:51:38.000000 |

| 12 | nova-compute     | compute01    | nova     | enabled | up    | 2016-08-17T08:51:30.000000 |

part5：部署网络服务

一：控制节点配置

1.建库建用户

CREATE DATABASE neutron;

GRANT ALL PRIVILEGES ON neutron.* TO 'neutron'@'localhost' \

  IDENTIFIED BY 'che001';

GRANT ALL PRIVILEGES ON neutron.* TO 'neutron'@'%' \

  IDENTIFIED BY 'che001';

flush privileges;

2.keystone相关

. admin-openrc

openstack user create --domain default --password-prompt neutron

openstack role add --project service --user neutron admin

openstack service create --name neutron \

  --description "OpenStack Networking" network

openstack endpoint create --region RegionOne \

  network public http://controller01:9696

openstack endpoint create --region RegionOne \

  network internal http://controller01:9696

openstack endpoint create --region RegionOne \

  network admin http://controller01:9696

3.安装软件包

yum install openstack-neutron openstack-neutron-ml2 python-neutronclient which  -y

4.配置服务器组件

编辑 /etc/neutron/neutron.conf文件,并完成以下动作:

在[数据库]节中,配置数据库访问:

[DEFAULT]

core_plugin = ml2

service_plugins = router

#下面配置:启用重叠IP地址功能

allow_overlapping_ips = True

rpc_backend = rabbit

#auth_strategy = keystone

notify_nova_on_port_status_changes = True

notify_nova_on_port_data_changes = True

[oslo_messaging_rabbit]

rabbit_host = controller01

rabbit_userid = openstack

rabbit_password = che001

[database]

connection = mysql+pymysql://neutron:che001@controller01/neutron

[keystone_authtoken]

auth_url = http://controller01:5000

memcached_servers = controller01:11211

auth_type = password

project_domain_name = default

user_domain_name = default

project_name = service

username = neutron

password = che001

[nova]

auth_url = http://controller01:5000

auth_type = password

project_domain_name = default

user_domain_name = default

region_name = RegionOne

project_name = service

username = nova

password = che001

[oslo_concurrency]

lock_path = /var/lib/neutron/tmp

编辑/etc/neutron/plugins/ml2/ml2_conf.ini文件

[ml2]

type_drivers = flat,vlan,vxlan,gre

tenant_network_types = vxlan

mechanism_drivers = openvswitch,l2population

extension_drivers = port_security

[ml2_type_flat]

flat_networks = provider

[ml2_type_vxlan]

vni_ranges = 1:1000

[securitygroup]

enable_ipset = True

编辑/etc/nova/nova.conf文件：

[neutron]

url = http://controller01:9696

auth_url = http://controller01:5000

auth_type = password

project_domain_name = default

user_domain_name = default

region_name = RegionOne

project_name = service

username = neutron

password = che001

service_metadata_proxy = True

5.创建连接

ln -s /etc/neutron/plugins/ml2/ml2_conf.ini /etc/neutron/plugin.ini

6.同步数据库：（此处会报一些关于future的问题，自行忽略）

su -s /bin/sh -c "neutron-db-manage --config-file /etc/neutron/neutron.conf \

 --config-file /etc/neutron/plugins/ml2/ml2_conf.ini upgrade head" neutron

7.重启nova服务

systemctl restart openstack-nova-api.service

8.启动neutron服务

systemctl enable neutron-server.service

systemctl start neutron-server.service

二：网络节点配置

1. 编辑 /etc/sysctl.conf

net.ipv4.ip_forward=1

net.ipv4.conf.all.rp_filter=0

net.ipv4.conf.default.rp_filter=0

2.执行下列命令，立即生效

sysctl -p

3.安装软件包

yum install openstack-neutron openstack-neutron-ml2 openstack-neutron-openvswitch -

4．配置组件

编辑/etc/neutron/neutron.conf文件

[DEFAULT]

core_plugin = ml2

service_plugins = router

allow_overlapping_ips = True

rpc_backend = rabbit

auth_strategy = keystone

[database]

connection = mysql+pymysql://neutron:che001@controller01/neutron

[oslo_messaging_rabbit]

rabbit_host = controller01

rabbit_userid = openstack

rabbit_password = che001

[oslo_concurrency]

lock_path = /var/lib/neutron/tmp

6、编辑 /etc/neutron/plugins/ml2/openvswitch_agent.ini文件:

[ovs]

#下面ip为网络节点数据网络ip

[agent]

tunnel_types=gre,vxlan

#l2_population=True

prevent_arp_spoofing=True

7.配置L3代理。编辑 /etc/neutron/l3_agent.ini文件:

[DEFAULT]

interface_driver=neutron.agent.linux.interface.OVSInterfaceDriver

external_network_bridge=br-ex

8.配置DHCP代理。编辑 /etc/neutron/dhcp_agent.ini文件:

[DEFAULT]

interface_driver=neutron.agent.linux.interface.OVSInterfaceDriver

dhcp_driver=neutron.agent.linux.dhcp.Dnsmasq

enable_isolated_metadata=True

9.配置元数据代理。编辑 /etc/neutron/metadata_agent.ini文件:

[DEFAULT]

nova_metadata_ip=controller01

metadata_proxy_shared_secret=che001

10.启动服务(先启动服务再建网桥br-ex)

网路节点：

systemctl start neutron-openvswitch-agent.service neutron-l3-agent.service \

neutron-dhcp-agent.service neutron-metadata-agent.service

systemctl enable neutron-openvswitch-agent.service neutron-l3-agent.service \

neutron-dhcp-agent.service neutron-metadata-agent.service

11.建网桥

注意，如果网卡数量有限，想用网路节点的管理网络网卡作为br-ex绑定的物理网卡

#那么需要将网络节点管理网络网卡ip去掉，建立br-ex的配置文件，ip使用原管理网ip

[root@network01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

TYPE=Ethernet

ONBOOT="yes"

BOOTPROTO="none"

NM_CONTROLLED=no

[root@network01 ~]# cat /etc/sysconfig/network-scripts/ifcfg-br-ex

DEVICE=br-ex

TYPE=Ethernet

ONBOOT="yes"

BOOTPROTO="none"

#HWADDR=bc:ee:7b:78:7b:a7

IPADDR=172.16.209.10

GATEWAY=172.16.209.1

NETMASK=255.255.255.0

DNS1=202.106.0.20

DNS1=8.8.8.8

NM_CONTROLLED=no #注意加上这一句否则网卡可能启动不成功

ovs-vsctl add-br br-ex

ovs-vsctl add-port br-ex eth2 #要在network服务重启前将物理端口eth0加入网桥br-ex

systemctl restart network #重启网络时，务必保证eth2网卡没有ip或者干脆是down掉的状态，并且一定要NM_CONTROLLED=no，否则会无法启动服务

三：计算节点配置

1. 编辑 /etc/sysctl.conf

net.ipv4.conf.all.rp_filter=0

net.ipv4.conf.default.rp_filter=0

2.sysctl -p

3.yum install openstack-neutron openstack-neutron-ml2 openstack-neutron-openvswitch -y

4.编辑 /etc/neutron/neutron.conf文件

[DEFAULT]

rpc_backend = rabbit

#auth_strategy = keystone

[oslo_messaging_rabbit]

rabbit_host = controller01

rabbit_userid = openstack

rabbit_password = che001

[oslo_concurrency]

lock_path = /var/lib/neutron/tmp

5．编辑 /etc/neutron/plugins/ml2/openvswitch_agent.ini

[ovs]

#下面ip为计算节点数据网络ip

local_ip = 1.1.1.117

#bridge_mappings = vlan:br-vlan

[agent]

tunnel_types = gre,vxlan

l2_population = True #开启l2_population功能用于接收sdn控制器（一般放在控制节点）发来的（新建的vm）arp信息，这样就把arp信息推送到了每个中断设备（计算节点），减少了一大波初识arp广播流量（说初始是因为如果没有l2pop机制，一个vm对另外一个vm的arp广播一次后就缓存到本地了），好强大，详见https://assafmuller.com/2014/05/21/ovs-arp-responder-theory-and-practice/

arp_responder = True #开启br-tun的arp响应功能，这样br-tun就成了一个arp proxy，来自本节点对其他虚拟机而非物理主机的arp请求可以基于本地的br-tun轻松搞定，不能再牛逼了

prevent_arp_spoofing = True

[securitygroup]

firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver

enable_security_group = True

7.编辑 /etc/nova/nova.conf

[neutron]

url = http://controller01:9696

auth_url = http://controller01:5000

auth_type = password

project_domain_name = default

user_domain_name = default

region_name = RegionOne

project_name = service

username = neutron

password = che001

8．启动服务

systemctl enable neutron-openvswitch-agent.service

systemctl start neutron-openvswitch-agent.service

systemctl restart openstack-nova-compute.service

part6:部署控制面板dashboard

在控制节点

1.安装软件包

yum install openstack-dashboard -y

2.配置/etc/openstack-dashboard/local_settings

OPENSTACK_HOST = "controller01"

ALLOWED_HOSTS = ['*', ]

SESSION_ENGINE = 'django.contrib.sessions.backends.cache'

CACHES = {

    'default': {

         'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',

         'LOCATION': 'controller01:11211',

    }

}

#注意：必须是v3而不是v3.0

OPENSTACK_KEYSTONE_URL = "http://%s:5000/v3" % OPENSTACK_HOST

OPENSTACK_KEYSTONE_MULTIDOMAIN_SUPPORT = True

OPENSTACK_API_VERSIONS = {

    "identity": 3,

    "image": 2,

    "volume": 2,

}

OPENSTACK_KEYSTONE_DEFAULT_DOMAIN = "default"

OPENSTACK_KEYSTONE_DEFAULT_ROLE = "user"

TIME_ZONE = "UTC"

3.启动服务

systemctl enable httpd.service memcached.service

systemctl restart httpd.service memcached.service

4.验证；

http://172.16.209.115/dashboard

总结：

与keystone打交道的只有api层，所以不要到处乱配
建主机的时候由nova-compute负责调用各个api，所以不要再控制节点配置啥调用
ml2是neutron的core plugin，只需要在控制节点配置
网络节点只需要配置相关的agent
各组件的api除了接收请求外还有很多其他功能，比方说验证请求的合理性，控制节点nova.conf需要配neutron的api、认证，因为nova boot时需要去验证用户提交网络的合理性，控制节点neutron.conf需要配nova的api、认证，因为你删除网络端口时需要通过nova-api去查是否有主机正在使用端口。计算几点nova.conf需要配neutron，因为nova-compute发送请求给neutron-server来创建端口。这里的端口值得是'交换机上的端口'
不明白为啥？或者不懂我在说什么，请好好研究openstack各组件通信机制和主机创建流程。

网路故障排查：

网络节点：

[root@network02 ~]# ip netns show

qdhcp-e63ab886-0835-450f-9d88-7ea781636eb8

qdhcp-b25baebb-0a54-4f59-82f3-88374387b1ec

qrouter-ff2ddb48-86f7-4b49-8bf4-0335e8dbaa83

[root@network02 ~]# ip netns exec qrouter-ff2ddb48-86f7-4b49-8bf4-0335e8dbaa83 bash

[root@network02 ~]# ping -c2 www.baidu.com

PING www.a.shifen.com (61.135.169.125) 56(84) bytes of data.

64 bytes from 61.135.169.125: icmp_seq=1 ttl=52 time=33.5 ms

64 bytes from 61.135.169.125: icmp_seq=2 ttl=52 time=25.9 ms

如果无法ping通，那么退出namespace

ovs-vsctl del-br br-ex

ovs-vsctl del-br br-int

ovs-vsctl del-br br-tun

ovs-vsctl add-br br-int

ovs-vsctl add-br br-ex

ovs-vsctl add-port br-ex eth0

systemctl restart neutron-openvswitch-agent.service neutron-l3-agent.service \

neutron-dhcp-agent.service neutron-metadata-agent.service