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16 changes: 8 additions & 8 deletions v1.12.x/advance/ovn-eip-fip-snat/index.html
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<span class=w> </span>-<span class=w> </span>--external-gateway-switch<span class=o>=</span>external204<span class=w> </span>

<span class=c1>### 以上配置都和下面的公网网络配置 vlan id 和资源名保持一致，目前仅支持指定一个 underlay 公网作为默认外部公网。</span>
</code></pre></div> <p>该配置项的设计和使用主要考虑了如下因素：</p> <ul> <li>基于该配置项可以对接到 provider network，vlan，subnet 的资源。</li> <li>基于该配置项可以将默认 vpc enable_eip_snat 功能对接到已有的 vlan，subnet 资源，同时支持公网 ip 的 ipam。</li> <li>如果仅使用默认 vpc 的 enable_eip_snat 模式, 且仅使用旧的基于 pod annotaion 的 eip fip snat，那么这个配置无需配置。</li> <li>基于该配置可以不使用默认 vpc enable_eip_snat 流程，仅通过对应到 vlan，subnet 流程，可以兼容仅自定义 vpc 使用 eip snat 的使用场景。</li> </ul> <h3 id=11-underlay>1.1 准备 underlay 公网网络<a class=headerlink href=#11-underlay title="Permanent link">&para;</a></h3> <div class=highlight><pre><span></span><code><span class=c1># 准备 provider-network， vlan， subnet</span>
</code></pre></div> <p>该配置项的设计和使用主要考虑了如下因素：</p> <ul> <li>基于该配置项可以对接到 provider network，vlan，subnet 的资源。</li> <li>基于该配置项可以将默认 vpc enable_eip_snat 功能对接到已有的 vlan，subnet 资源，同时支持公网 ip 的 ipam。</li> <li>如果仅使用默认 vpc 的 enable_eip_snat 模式, 且仅使用旧的基于 pod annotaion 的 fip snat，那么这个配置无需配置。</li> <li>基于该配置可以不使用默认 vpc enable_eip_snat 流程，仅通过对应到 vlan，subnet 流程，可以兼容仅自定义 vpc 使用 eip snat 的使用场景。</li> </ul> <h3 id=11-underlay>1.1 准备 underlay 公网网络<a class=headerlink href=#11-underlay title="Permanent link">&para;</a></h3> <div class=highlight><pre><span></span><code><span class=c1># 准备 provider-network， vlan， subnet</span>
<span class=c1># cat 01-provider-network.yaml</span>
apiVersion:<span class=w> </span>kubeovn.io/v1
kind:<span class=w> </span>ProviderNetwork
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Route<span class=w> </span>Table<span class=w> </span>&lt;main&gt;:
<span class=w> </span><span class=m>0</span>.0.0.0/0<span class=w> </span><span class=m>10</span>.5.204.254<span class=w> </span>dst-ip
<span class=c1># 目前该路由已自动维护</span>
</code></pre></div> <h2 id=2-ovn-eip>2. ovn-eip<a class=headerlink href=#2-ovn-eip title="Permanent link">&para;</a></h2> <p>该功能和 iptables-eip 设计和使用方式基本一致，ovn-eip 目前有三种 type</p> <ul> <li>nat: 用于 ovn dnat，fip, snat, 这些 nat 类型会记录在 status 中</li> <li>lrp: 用于 vpc 和公网相连的资源</li> <li>node-ext-gw: 用于 ovn 基于 bfd 的 ecmp 静态路由场景</li> </ul> <div class=highlight><pre><span></span><code>---
</code></pre></div> <h2 id=2-ovn-eip>2. ovn-eip<a class=headerlink href=#2-ovn-eip title="Permanent link">&para;</a></h2> <p>该功能和 iptables-eip 设计和使用方式基本一致，ovn-eip 目前有三种 type</p> <ul> <li>nat: 用于 ovn dnat，fip, snat, 这些 nat 类型会记录在 status 中</li> <li>lrp: Resources connected to the public network from a vpc can be used by nat</li> <li>lsp: 用于 ovn 基于 bfd 的 ecmp 静态路由场景，在网关节点上提供一个 ovs internal port 作为 ecmp 路由的下一跳</li> </ul> <div class=highlight><pre><span></span><code>---
kind:<span class=w> </span>OvnEip
apiVersion:<span class=w> </span>kubeovn.io/v1
metadata:
<span class=w> </span>name:<span class=w> </span>eip-static
spec:
<span class=w> </span>externalSubnet:<span class=w> </span>external204
<span class=w> </span>type:<span class=w> </span>fip
<span class=w> </span>type:<span class=w> </span>nat

<span class=c1># 动态分配一个 eip 资源，该资源预留用于 fip 场景</span>
</code></pre></div> <h3 id=21-ovn-fip-pod-fip>2.1 ovn-fip 为 pod 绑定一个 fip<a class=headerlink href=#21-ovn-fip-pod-fip title="Permanent link">&para;</a></h3> <div class=highlight><pre><span></span><code><span class=c1># k get po -o wide -n vpc1 vpc-1-busybox01</span>
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<span class=w> </span>name:<span class=w> </span>eip-static
spec:
<span class=w> </span>externalSubnet:<span class=w> </span>external204
<span class=w> </span>type:<span class=w> </span>fip
<span class=w> </span>type:<span class=w> </span>nat

---
kind:<span class=w> </span>OvnFip
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<span class=w> </span>name:<span class=w> </span>eip-for-vip
spec:
<span class=w> </span>externalSubnet:<span class=w> </span>external204
<span class=w> </span>type:<span class=w> </span>fip
<span class=w> </span>type:<span class=w> </span>nat

---
kind:<span class=w> </span>OvnFip
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<span class=w> </span>name:<span class=w> </span>snat-for-subnet-in-vpc
spec:
<span class=w> </span>externalSubnet:<span class=w> </span>external204
<span class=w> </span>type:<span class=w> </span>snat
<span class=w> </span>type:<span class=w> </span>nat

---
kind:<span class=w> </span>OvnSnatRule
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<span class=w> </span>name:<span class=w> </span>snat-for-pod-vpc-ip
spec:
<span class=w> </span>externalSubnet:<span class=w> </span>external204
<span class=w> </span>type:<span class=w> </span>snat
<span class=w> </span>type:<span class=w> </span>nat

---
kind:<span class=w> </span>OvnSnatRule
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<span class=c1># kubectl get odnat eip-dnat </span>
NAME<span class=w> </span>EIP<span class=w> </span>PROTOCOL<span class=w> </span>V4EIP<span class=w> </span>V4IP<span class=w> </span>INTERNALPORT<span class=w> </span>EXTERNALPORT<span class=w> </span>IPNAME<span class=w> </span>READY
eip-dnat<span class=w> </span>eip-dnat<span class=w> </span>tcp<span class=w> </span><span class=m>10</span>.5.49.4<span class=w> </span><span class=m>192</span>.168.0.4<span class=w> </span><span class=m>22</span><span class=w> </span><span class=m>22</span><span class=w> </span>test-dnat-vip<span class=w> </span><span class=nb>true</span>
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