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10 changes: 5 additions & 5 deletions v1.13.x/advance/ovn-eip-fip-snat/index.html
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<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> <p>当配置了额外公网网络时，可以通过 externalSubnet 指定需要扩展使用的公网网络，在上述配置中，可选 external204 和 extra 两个公网网络</p> <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>
</code></pre></div> <p>externalSubnet 字段可不进行配置，若未配置则会使用默认公网网络，在上述配置中默认公网网络为 external204。</p> <p>若要使用额外公网网络，则需要通过 externalSubnet 显式指定需要扩展使用的公网网络，在上述配置中扩展公网网络为 extra。</p> <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>
NAME<span class=w> </span>READY<span class=w> </span>STATUS<span class=w> </span>RESTARTS<span class=w> </span>AGE<span class=w> </span>IP<span class=w> </span>NODE
vpc-1-busybox01<span class=w> </span><span class=m>1</span>/1<span class=w> </span>Running<span class=w> </span><span class=m>0</span><span class=w> </span>3d15h<span class=w> </span><span class=m>192</span>.168.0.2<span class=w> </span>pc-node-2

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<span class=w> </span>ovnEip:<span class=w> </span>snat-for-subnet-in-vpc
<span class=w> </span>vpc:<span class=w> </span>vpc1
<span class=w> </span>v4IpCidr:<span class=w> </span><span class=m>192</span>.168.0.0/24<span class=w> </span><span class=c1># 该字段可以是 cidr 也可以是 ip</span>
</code></pre></div> <p>当配置了额外公网网络时，可以通过 externalSubnet 指定需要扩展使用的公网网络，在上述配置中，可选 external204 和 extra 两个公网网络</p> <h3 id=32-ovn-snat-pod-ip>3.2 ovn-snat 对应到一个 pod ip<a class=headerlink href=#32-ovn-snat-pod-ip title="Permanent link">&para;</a></h3> <p>该功能和 iptables-snat 设计和使用方式基本一致</p> <div class=highlight><pre><span></span><code><span class=c1># cat 03-pod-snat.yaml</span>
</code></pre></div> <p>若要使用额外公网网络，则需要通过 externalSubnet 显式指定需要扩展使用的公网网络，在上述配置中扩展公网网络为 extra。</p> <h3 id=32-ovn-snat-pod-ip>3.2 ovn-snat 对应到一个 pod ip<a class=headerlink href=#32-ovn-snat-pod-ip title="Permanent link">&para;</a></h3> <p>该功能和 iptables-snat 设计和使用方式基本一致</p> <div class=highlight><pre><span></span><code><span class=c1># cat 03-pod-snat.yaml</span>

---
kind:<span class=w> </span>OvnEip
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<span class=w> </span>ovnEip:<span class=w> </span>snat-for-subnet-in-vpc
<span class=w> </span>vpc:<span class=w> </span>vpc1
<span class=w> </span>v4IpCidr:<span class=w> </span><span class=m>192</span>.168.0.4
</code></pre></div> <p>当配置了额外公网网络时，可以通过 externalSubnet 指定需要扩展使用的公网网络，在上述配置中，可选 external204 和 extra 两个公网网络。</p> <p>以上资源创建后，可以看到 snat 公网功能依赖的如下资源。</p> <div class=highlight><pre><span></span><code><span class=c1># kubectl ko nbctl show vpc1</span>
</code></pre></div> <p>若要使用额外公网网络，则需要通过 externalSubnet 显式指定需要扩展使用的公网网络，在上述配置中扩展公网网络为 extra。</p> <p>以上资源创建后，可以看到 snat 公网功能依赖的如下资源。</p> <div class=highlight><pre><span></span><code><span class=c1># kubectl ko nbctl show vpc1</span>
router<span class=w> </span>87ad06fd-71d5-4ff8-a1f0-54fa3bba1a7f<span class=w> </span><span class=o>(</span>vpc1<span class=o>)</span>
<span class=w> </span>port<span class=w> </span>vpc1-vpc1-subnet1
<span class=w> </span>mac:<span class=w> </span><span class=s2>&quot;00:00:00:ED:8E:C7&quot;</span>
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<span class=w> </span><span class=nt>externalPort</span><span class=p>:</span><span class=w> </span><span class=s>&quot;22&quot;</span>
<span class=w> </span><span class=nt>vpc</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">vpc1</span>
<span class=w> </span><span class=nt>v4Ip</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">192.168.0.3</span>
</code></pre></div> <p>当配置了额外公网网络时，可以通过 externalSubnet 指定需要扩展使用的公网网络，在上述配置中，可选 external204 和 extra 两个公网网络</p> <p>OvnDnatRule 的配置与 IptablesDnatRule 类似</p> <div class=highlight><pre><span></span><code><span class=c1># kubectl get oeip eip-dnat</span>
</code></pre></div> <p>若要使用额外公网网络，则需要通过 externalSubnet 显式指定需要扩展使用的公网网络，在上述配置中扩展公网网络为 extra。</p> <p>OvnDnatRule 的配置与 IptablesDnatRule 类似</p> <div class=highlight><pre><span></span><code><span class=c1># kubectl get oeip eip-dnat</span>
NAME<span class=w> </span>V4IP<span class=w> </span>V6IP<span class=w> </span>MAC<span class=w> </span>TYPE<span class=w> </span>READY
eip-dnat<span class=w> </span><span class=m>10</span>.5.49.4<span class=w> </span><span class=m>00</span>:00:00:4D:CE:49<span class=w> </span>dnat<span class=w> </span><span class=nb>true</span>

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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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