[部署篇7]VMWare搭建Openstack——网络（计算）节点的Neutron安装

首先，看到标题可能比较晕，为什么又多了个网络节点，一般情况下，这里介绍的都是物理环境，一个控制节点，一个计算节点，但是我们虚拟机之间也存在内部网络，所以我们也需要有一个逻辑的网络节点，我们又经常将网络节点和计算节点放在一起，所以标题就成为了网络（计算）节点。

如果网络节点和计算节点放在一块，我们就需要在虚拟机添加一个新的网卡。

添加完毕之后，我们需要为新网卡赋予相关的网络信息

sm@computer:~$ sudo more /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 192.168.3.181
        netmask 255.255.255.0
        gateway 192.168.3.1
auto eth1
iface eth1 inet manual
        up ip link set dev $IFACE up
        down ip link set dev $IFACE down

我们看到，原来我们设置的网卡eth0的IP信息，现在我们为新网卡eth1设置相关信息。

一、预备工作【network】
1. 编辑/etc/sysctl.conf文件，
[ sudo vi /etc/sysctl.conf ]

更新设置如下：
net.ipv4.ip_forward=1
net.ipv4.conf.all.rp_filter=0
net.ipv4.conf.default.rp_filter=0

2. 执行命令
sudo sysctl -p

sm@computer:~$ sudo sysctl -p
[sudo] password for sm:
net.ipv4.ip_forward = 1
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.all.rp_filter = 0

二、安装网络服务neutron
1. 安装网络服务包
sudo apt-get install neutron-plugin-ml2 neutron-plugin-openvswitch-agent openvswitch-datapath-dkms neutron-l3-agent neutron-dhcp-agent

2. 编辑/etc/neutron/neutron.conf文件，设置数据库、消息服务及IP相关参数，
[ sudo vi /etc/neutron/neutron.conf ]

更新设置如下：

core_plugin = neutron.plugins.ml2.plugin.Ml2Plugin
service_plugins = neutron.services.l3_router.l3_router_plugin.L3RouterPlugin
auth_strategy = keystone
dhcp_agent_notification = True
rpc_backend = neutron.openstack.common.rpc.impl_kombu
control_exchange = neutron
rabbit_host = 192.168.3.180
rabbit_password = mq4smtest
rabbit_port = 5672
rabbit_userid = guest
auth_host = 192.168.3.180
auth_port = 35357
auth_protocol = http
auth_uri = http://192.168.3.180:5000
admin_tenant_name = service
admin_user = neutron
admin_password = neutron4smtest
signing_dir = $state_path/keystone-signing
notification_driver = neutron.openstack.common.notifier.rpc_notifier
service_provider=VPN:openswan:neutron.services.vpn.service_drivers.ipsec.IPsecVPNDriver:default

虽然打印出来的内容不多，但是neutron.conf文件有几百行的记录，包括注释信息，所以还需要用户保证在相关的section下面将正确的Value对应到相应的key上。

sm@computer:~$ sudo grep ^[a-z] /etc/neutron/neutron.conf
state_path = /var/lib/neutron
lock_path = $state_path/lock
core_plugin = neutron.plugins.ml2.plugin.Ml2Plugin
service_plugins = neutron.services.l3_router.l3_router_plugin.L3RouterPlugin
auth_strategy = keystone
dhcp_agent_notification = True
rpc_backend = neutron.openstack.common.rpc.impl_kombu
control_exchange = neutron
rabbit_host = 192.168.3.180
rabbit_password = mq4smtest
rabbit_port = 5672
rabbit_userid = guest
notification_driver = neutron.openstack.common.notifier.rpc_notifier
root_helper = sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf
auth_host = 192.168.3.180
auth_port = 35357
auth_protocol = http
admin_tenant_name = service
admin_user = neutron
admin_password = neutron4smtest
signing_dir = $state_path/keystone-signing
service_provider=VPN:openswan:neutron.services.vpn.service_drivers.ipsec.IPsecVPNDriver:default

3. 编辑/etc/neutron/l3_agent.ini文件，
[ sudo vi /etc/neutron/l3_agent.ini ]

更新设置如下：
interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
use_namespaces = True
external_network_bridge =br-ex

sm@computer:~$ sudo grep ^[a-z] /etc/neutron/l3_agent.ini
interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
use_namespaces = True
external_network_bridge = br-ex

4. 编辑/etc/neutron/dhcp_agent.ini文件，
[ sudo vi /etc/neutron/dhcp_agent.ini ]

更新设置如下：

interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
use_namespaces = True

sm@computer:~$ sudo grep ^[a-z] /etc/neutron/dhcp_agent.ini
interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
use_namespaces = True

5. 编辑/etc/neutron/metadata_agent.ini文件，
[ sudo vi /etc/neutron/metadata_agent.ini ]

更新设置如下：
auth_url = http://192.168.3.180:35357/v2.0
admin_tenant_name = service
admin_user = neutron
admin_password = neutron4smtest
nova_metadata_ip = 192.168.3.180
nova_metadata_port = 8775
metadata_proxy_shared_secret = neutron4smtest

sm@computer:~$ sudo grep ^[a-z] /etc/neutron/metadata_agent.ini
auth_url = http://192.168.3.180:5000/v2.0
auth_region = RegionOne
admin_tenant_name = service
admin_user = neutron
admin_password = neutron4smtest
nova_metadata_ip = 192.168.3.180
nova_metadata_port = 8775
metadata_proxy_shared_secret = neutron4smtest

6. 编辑/etc/neutron/plugins/ml2/ml2_conf.ini文件
[ sudo vi /etc/neutron/plugins/ml2/ml2_conf.ini ]

更新设置如下：
type_drivers = flat,vlan,gre
tenant_network_types = vlan,gre
mechanism_drivers = openvswitch
# 添加到最后
enable_security_group = True
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver

sm@computer:~$ sudo grep ^[a-z] /etc/neutron/plugins/ml2/ml2_conf.ini
type_drivers = flat,vlan,gre
tenant_network_types = vlan,gre
mechanism_drivers = openvswitch

enable_security_group = True
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver

7. 重启服务
sudo service openvswitch-switch restart

sm@computer:~$ sudo service openvswitch-switch restart
openvswitch-switch stop/waiting
openvswitch-switch start/running

8. 重启计算服务
sudo service neutron-l3-agent restart
sudo service neutron-dhcp-agent restart
sudo service neutron-metadata-agent restart
sudo service neutron-plugin-openvswitch-agent restart

sm@computer:~$ sudo service neutron-l3-agent restart
neutron-l3-agent stop/waiting
neutron-l3-agent start/running, process 31490
sm@computer:~$      sudo service neutron-dhcp-agent restart
neutron-dhcp-agent stop/waiting
neutron-dhcp-agent start/running, process 31514
sm@computer:~$      sudo service neutron-metadata-agent restart
neutron-metadata-agent stop/waiting
neutron-metadata-agent start/running, process 31528
sm@computer:~$      sudo service neutron-plugin-openvswitch-agent restart
neutron-plugin-openvswitch-agent stop/waiting
neutron-plugin-openvswitch-agent start/running, process 31594

还是那句话，只要服务能够重启启动，状态是正常的，就说明安装没有问题。

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[部署篇7]VMWare搭建Openstack——网络（计算）节点的Neutron安装

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