云计算:OpenStack 配置二层物理网卡为三层桥的接口

发布时间:2023年12月27日

目录

一、理论

1.OpenStack

二、实验

1. Linux系统修改网卡

2.OpenStack 配置二层物理网卡为三层桥的接口


一、理论

1.OpenStack

(1)概念

OpenStack是一个开源的云计算管理平台项目,是一系列软件开源项目的组合。由NASA(美国国家航空航天局)和Rackspace合作研发并发起,以Apache许可证(Apache软件基金会发布的一个自由软件许可证)授权。

OpenStack为私有云和公有云提供可扩展的弹性的云计算服务项目目标是提供实施简单、可大规模扩展、丰富、标准统一的云计算管理平台。

(2)官网架构图

Open Source Cloud Computing Platform Software - OpenStack

(3)关键组件与服务

表1?Openstack关键组件与服务

服务类型组件名称描述
DashboardHorizon提供了一个基于web的自服务门户,通过web与OpenStack底层服务交互。
Controller/ComputeNova在OpenStack环境中计算实例的生命周期管理。包括虚拟机创建、调度、删除等操作。
NetworkingNeutron确保为其它OpenStack服务提供网络连接即服务,比如OpenStack计算。为用户提供API定义网络和使用。基于插件的架构其支持众多的网络提供商和技术。
Object?StorageSwift通过基于HTTP的应用程序接口存储和任意检索的非结构化数据对象。
Block StorageCinder为运行实例而提供的持久性块存储。它的可插拔驱动架构的功能有助于创建和管理块存储设备。
Identity ServiceKeystone为其他OpenStack服务提供认证和授权服务,为所有的OpenStack服务提供一个端点目录。
Image ServiceGlance存储和检索虚拟机镜像元数据,OpenStack会在实例部署时使用此服务。
Telemetry ServiceCeilometer为OpenStack云的计费、基准、扩展性以及统计等目的提供监测和计量。
Orchestration ServiceHeat既可以模板来编排多个综合的云应用,类似 AWS的CloudFormation。

(4)基础网络配置

1)br-ex 
连接外部网络(external)

2)br-tun
连接隧道网络(tunnel)

3)br-int
综合网桥(integration)

二、实验

1. Linux系统修改网卡

(1)关闭网络管理

[root@openstack ~]# systemctl stop NetworkManager && systemctl disable NetworkManager

(2)查看当前ip地址

[root@openstack ~]# ip a

(3)复制网卡

[root@openstack ~]# cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-ens33

(4)查看网卡

[root@openstack ~]# cd /etc/sysconfig/network-scripts/
[root@openstack network-scripts]# ls
ifcfg-ens33  ifdown-eth   ifdown-isdn  ifdown-routes    ifdown-tunnel  ifup-eth   ifup-isdn   ifup-post    ifup-Team      init.ipv6-global
ifcfg-eth0   ifdown-ib    ifdown-ovs   ifdown-sit       ifup           ifup-ib    ifup-ovs    ifup-ppp     ifup-TeamPort  network-functions
ifdown       ifdown-ippp  ifdown-post  ifdown-Team      ifup-aliases   ifup-ippp  ifup-plip   ifup-routes  ifup-tunnel    network-functions-ipv6
ifdown-bnep  ifdown-ipv6  ifdown-ppp   ifdown-TeamPort  ifup-bnep      ifup-ipv6  ifup-plusb  ifup-sit     ifup-wireless  test

(5)编辑网卡

[root@openstack network-scripts]# vim ifcfg-ens33 

(6)删除旧网卡

[root@openstack network-scripts]# rm -fr /etc/sysconfig/network-scripts/ifcfg-eth0

(7)重启网络服务

[root@openstack network-scripts]# systemctl restart network

(8)主机ping opsenstack地址

(9) 登录系统

http://192.168.199.201

2.OpenStack 配置二层物理网卡为三层桥的接口

(1)查看当前网桥信息

[root@openstack network-scripts]# ovs-vsctl show
db90689c-619b-4abe-bcbf-16563efed45b
    Manager "ptcp:6640:127.0.0.1"
        is_connected: true
    Bridge br-ex
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port br-ex
            Interface br-ex
                type: internal
        Port phy-br-ex
            Interface phy-br-ex
                type: patch
                options: {peer=int-br-ex}
    Bridge br-int
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port br-int
            Interface br-int
                type: internal
        Port int-br-ex
            Interface int-br-ex
                type: patch
                options: {peer=phy-br-ex}
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
    Bridge br-tun
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
        Port br-tun
            Interface br-tun
                type: internal
    ovs_version: "2.7.3"

(2)备份网卡

[root@openstack network-scripts]# mkdir bak

[root@openstack network-scripts]# ls
bak          ifdown-ib    ifdown-post    ifdown-TeamPort  ifup-eth   ifup-ovs    ifup-routes    ifup-wireless
ifcfg-ens33  ifdown-ippp  ifdown-ppp     ifdown-tunnel    ifup-ib    ifup-plip   ifup-sit       init.ipv6-global
ifdown       ifdown-ipv6  ifdown-routes  ifup             ifup-ippp  ifup-plusb  ifup-Team      network-functions
ifdown-bnep  ifdown-isdn  ifdown-sit     ifup-aliases     ifup-ipv6  ifup-post   ifup-TeamPort  network-functions-ipv6
ifdown-eth   ifdown-ovs   ifdown-Team    ifup-bnep        ifup-isdn  ifup-ppp    ifup-tunnel    test

[root@openstack network-scripts]# cp ifcfg-ens33 bak/

(3)创建br-ex桥

[root@openstack network-scripts]# cp ifcfg-ens33 ifcfg-br-ex

[root@openstack network-scripts]# vim ifcfg-ens33 

[root@openstack network-scripts]# vim ifcfg-br-ex 

复制

将对应的物理网卡添加到OVS– BR-EX上作为一个接口

地址配置在br-ex 三层接口上

(4)重启网络

[root@openstack network-scripts]# service network restart
Restarting network (via systemctl):                        [  确定  ]

(5)查看接口信息

[root@openstack network-scripts]# more ifcfg-ens33
TYPE=OVSPort
HWADDR=00:0c:29:53:85:ce
ONBOOT=yes
DEVICE=ens33
DEVICETYPE=ovs
OVS_BRIDGE=br-ex

(6)查看网桥信息

[root@openstack network-scripts]# more ifcfg-ens33
TYPE=OVSPort
HWADDR=00:0c:29:53:85:ce
ONBOOT=yes
DEVICE=ens33
DEVICETYPE=ovs
OVS_BRIDGE=br-ex

[root@openstack network-scripts]# more ifcfg-br-ex 
TYPE=OVSBridge
DEVICETYPE=ovs
DEVICE=br-ex
BOOTPROTO=static
DNS1=192.168.199.2
DEFROUTE=yes
NAME=br-ex
ONBOOT=yes
IPADDR=192.168.199.201
PREFIX=24
GATEWAY=192.168.199.2

(7)查看ip

[root@openstack network-scripts]# ip add show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master ovs-system state UP qlen 1000
    link/ether 00:0c:29:53:85:ce brd ff:ff:ff:ff:ff:ff
    inet6 fe80::20c:29ff:fe53:85ce/64 scope link 
       valid_lft forever preferred_lft forever
3: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether ba:4a:22:6d:00:d7 brd ff:ff:ff:ff:ff:ff
4: br-int: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether 06:b7:f9:bd:7d:47 brd ff:ff:ff:ff:ff:ff
5: br-tun: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether 8a:88:cb:d5:87:41 brd ff:ff:ff:ff:ff:ff
6: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN qlen 1000
    link/ether 00:0c:29:53:85:ce brd ff:ff:ff:ff:ff:ff
    inet 192.168.199.201/24 brd 192.168.199.255 scope global br-ex
       valid_lft forever preferred_lft forever
    inet6 fe80::3c23:faff:fe8f:9d47/64 scope link 
       valid_lft forever preferred_lft forever

(8)主机 ping openstack地址

(9)查看网桥信息(桥br-ex已添加端口ens33,对应接口为ens33)

[root@openstack network-scripts]# ovs-vsctl show
db90689c-619b-4abe-bcbf-16563efed45b
    Manager "ptcp:6640:127.0.0.1"
    Bridge br-ex
        Controller "tcp:127.0.0.1:6633"
        fail_mode: secure
        Port br-ex
            Interface br-ex
                type: internal
        Port "ens33"
            Interface "ens33"
        Port phy-br-ex
            Interface phy-br-ex
                type: patch
                options: {peer=int-br-ex}
    Bridge br-int
        Controller "tcp:127.0.0.1:6633"
        fail_mode: secure
        Port br-int
            Interface br-int
                type: internal
        Port int-br-ex
            Interface int-br-ex
                type: patch
                options: {peer=phy-br-ex}
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}
    Bridge br-tun
        Controller "tcp:127.0.0.1:6633"
        fail_mode: secure
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
        Port br-tun
            Interface br-tun
                type: internal
    ovs_version: "2.7.3"

(9) 测试抓包

[root@openstack network-scripts]# tcpdump -i br-ex | grep -i icmp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on br-ex, link-type EN10MB (Ethernet), capture size 262144 bytes
^C40 packets captured
40 packets received by filter
0 packets dropped by kernel

(10)再次成功登录系统

文章来源:https://blog.csdn.net/cronaldo91/article/details/135239137
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