openstack内外网ip实现

类似于阿里云ECS主机的内外网(双网卡不通网段)的结构，最终实现内外网区分隔离。

https://www.aliyun.com/product/ecs/?utm_medium=text&utm_source=baidu&utm_campaign=brand&utm_content=se_50381

16.1各个虚拟机添加并配置IP

如果已经是双网卡不需要重新添加，网段配置文192.168.10.20

16.1.1在各虚拟机设置界面点击添加

16.1.2添加网卡

选择网络适配器然后点下一步：

16.1.3确认添加

选仅主机模式然后点完成

16.1.4最终确认

确认添加正确然后点确定

16.1.5各虚拟机确认网卡添加成功

16.1.6各个虚拟机配置IP

# cd /etc/sysconfig/network-scripts/

# vim ifcfg-eth1

TYPE=Ethernet

BOOTPROTO=static

ONBOOT=yes

DEVICE=eth1

NAME=eth1

IPADDR=192.168.20.202 #与192.168.10.x网段最后一位IP相同

NETMASK=255.255.252.0

16.1.7其他服务器配置与验证

按照以上过程添加其他服务器，然验证各服务器第二块网卡之间是否网络互通：

16.2控制节点配置

16.2.1编辑配置文件linuxbridge_agent.ini

# vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini

155 physical_interface_mappings = internal:eth0, external:eth1

16.2.2编辑配置文件如下ml2_conf.ini

# vim /etc/neutron/plugins/ml2/ml2_conf.ini

172 flat_networks = internal, external

16.2.3控制节点当前全部配置

# grep "^[a-Z]" /etc/neutron/plugins/ml2/linuxbridge_agent.ini

physical_interface_mappings = internal:eth0, external:eth1

firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver

enable_security_group = true

enable_vxlan = false

# grep "^[a-Z]" /etc/neutron/plugins/ml2/ml2_conf.ini

type_drivers = flat,vlan

tenant_network_types =

mechanism_drivers = linuxbridge

extension_drivers = port_security

flat_networks = internal, external

enable_ipset = true

16.2.4重启neutron服务

# systemctl restart neutron-linuxbridge-agent

# systemctl restart neutron-server

16.3计算节点配置

16.3.1编辑配置文件

# vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini

155 physical_interface_mappings = internal:eth0, external:eth1

# vim /etc/neutron/plugins/ml2/linuxbridge_agent.ini

physical_interface_mappings = internal:eth0,external:eth1

16.3.2当前全部配置

# grep "^[a-Z]" /etc/neutron/plugins/ml2/linuxbridge_agent.ini

physical_interface_mappings = internal:eth0, external:eth1

firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver

enable_security_group = true

enable_vxlan = false

# grep "^[a-Z]" /etc/neutron/plugins/ml2/linuxbridge_agent.ini

physical_interface_mappings = internal:eth0,external:eth1

firewall_driver = neutron.agent.linux.iptables_firewall.IptablesFirewallDriver

enable_security_group = true

enable_vxlan = false

16.3.3重启neutron服务

# systemctl restart neutron-linuxbridge-agent

16.4创建网络并验证

16.4.1控制端创建网络

# neutron net-create --shared --provider:physical_network external --provider:network_type flat external-net

neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.

16.4.2创建子网

# neutron subnet-create --name external-subnet --allocation-pool start=192.168.20.100,end=192.168.20.200 --dns-nameserver 223.5.5.5 external-net 192.

168.20.0/24

16.4.3验证子网创建

# neutron net-list

16.5创建虚拟机

16.5.1在网卡界面添加两个网卡

其他保持不变

16.5.2验证内外网访问

#如果是在虚拟机启动的实例，则实例启动过程会稍微有点慢，下面是计算节点192.168.10.202上面的实例：

# 下面是计算节点192.168.10.203上面的实例：