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向百度提交网站,网站建设 电话,特效很好的网站,博客网站建设方案书1、创建外部网络#xff0c;即是provider网络#xff0c;有关provider网络的详细解释请参见我之前的文章openstack中的self-service和provider网络_openstack provider网络不能创建vlan吗-CSDN博客 network create --share --external --provider-physical-network physnet1…1、创建外部网络即是provider网络有关provider网络的详细解释请参见我之前的文章openstack中的self-service和provider网络_openstack provider网络不能创建vlan吗-CSDN博客 network create --share --external --provider-physical-network physnet1 --provider-network-type flat out 2、再创建子网 subnet create --subnet-pool 192.168.23.0/24 --gateway 192.168.23.1 --no-dhcp --allocation-pool start192.168.23.10,end192.168.23.60 --network out out_sub allocation-pool  指的是动态分配的浮动IP范围gateway 192.168.23.1 这是指定外部网络的网关一般是物理网络的网关不是虚拟网络的 3、创建路由器 router create router3 4、把新创建的路由器跟用户子网连接起来 router add subnet router3 new_subnet01 这里面new_subnet01就是以前新建立的用户子网 (openstack) subnet show new_subnet01 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | Field             | Value                                                                                                                                                            | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | allocation_pools  | 10.173.0.2-10.173.0.254                                                                                                                                          | | cidr              | 10.173.0.0/24                                                                                                                                                    | | created_at        | 2024-11-26T11:09:32Z                                                                                                                                             | | description       |                                                                                                                                                                  | | dns_nameservers   |                                                                                                                                                                  | | enable_dhcp       | True                                                                                                                                                             | | gateway_ip        | 10.173.0.1                                                                                                                                                       | | host_routes       |                                                                                                                                                                  | | id                | ea702afb-a6e8-40d1-9bc4-f9280ff4a101                                                                                                                             | | ip_version        | 4                                                                                                                                                                | | ipv6_address_mode | None                                                                                                                                                             | | ipv6_ra_mode      | None                                                                                                                                                             | | location          | cloud, project.domain_id, project.domain_nameDefault, project.id7e0a0a5e8dee4688ad2eeb2290023a5b, project.nameadmin, region_nameRegionOne, zone | | name              | new_subnet01                                                                                                                                                     | | network_id        | c861c1c9-6b91-4e42-842b-07f56e21941b                                                                                                                             | | prefix_length     | None                                                                                                                                                             | | project_id        | 7e0a0a5e8dee4688ad2eeb2290023a5b                                                                                                                                 | | revision_number   | 0                                                                                                                                                                | | segment_id        | None                                                                                                                                                             | | service_types     |                                                                                                                                                                  | | subnetpool_id     | None                                                                                                                                                             | | tags              |                                                                                                                                                                  | | updated_at        | 2024-11-26T11:09:32Z                                    从这里面可以看出这个子网的网关是10.173.0.1注意这时候10.173.0.1还是没有分配给任何设备的。 5、把路由器和子网连接起来 router add subnet router3 new_subnet01 这里面路由器就会多一个端口了并且分配的IP就是10.173.0.1 port list --router router3 ----------------------------------------------------------------------------------------------------------------------------------------------------- | ID                                   | Name | MAC Address       | Fixed IP Addresses                                                           | Status | ----------------------------------------------------------------------------------------------------------------------------------------------------- | b2626e44-efb1-4d49-9242-fc5f277ecc79 |      | fa:16:3e:51:3c:d3 | ip_address10.173.0.1, subnet_idea702afb-a6e8-40d1-9bc4-f9280ff4a101    | ACTIVE | 7、把路由器再跟外网连接起来并指定跟外网互联的IP也可以不指定自动分配 router set --fixed-ip subnetout_sub,ip-address192.168.23.61 --external-gateway out router3 这里面要注意我们在这里面指定了--fixed-ip subnetout_sub,ip-address192.168.23.61 主要是为了指定子网因为out这个网络里面在我这边是存在多个子网的。同时我还指定了路由器跟外网子网相连端口的IP。如果你的out网络只有一个子网你也可以不指定这个 8、新建立浮动IP floating ip create --subne out_sub out 这时会从start192.168.23.10,end192.168.23.60随机分配一个 9、给虚机绑定浮动IP server add floating ip mynew_vm 192.168.23.28 192.168.23.28就是第8步创建的浮动IP 路由器在OPENSTACK里面标准实现实际上就是一个namespace我们在网络节点上查看 ip netns qrouter-502d3467-a9cf-44f5-87bf-bbcd0439d7e6 (id: 8) qrouter-开头的就是你建立的路由器里面用IPTABLE做了一对一的映射把浮动IP映射到用户内网的IP。当然在商业公有云中为了网络性能一般不使用namespace来做路由器而是使用其它更高效的方案如天翼云就是使用了开源的VPP进行了二次开发
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