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refactor ovn ipsec and remove old ipsec.sh
Signed-off-by: clyi <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,94 +1,7 @@ | ||
| # Encrypt inter-node communication using IPsec | ||
| # Use IPsec to encrypt communication between node | ||
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| This function is supported after v1.10.11 and v1.11.4, the kernel version is at least 3.10.0 or above, and UDP ports 500 and 4500 are available. | ||
| This function is supported from v1.13.0 onwards, and the host UDP 500 and 4500 ports need to be available. | ||
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| ## Start IPsec | ||
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| Copy the script from the Kube-OVN source code [ipsec.sh](https://raw.githubusercontent.com/kubeovn/kube-ovn/master/dist/images/ipsec.sh), execute the command as follows, the script will call ovs-pki to generate and distribute the certificate required for encryption: | ||
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| ```bash | ||
| bash ipsec.sh init | ||
| ``` | ||
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| After the execution is completed, the nodes will negotiate for a period of time to establish an IPsec tunnel. The experience value is between ten seconds and one minute.You can check the IPsec status with the following command: | ||
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| ```bash | ||
| # bash ipsec.sh status | ||
| Pod {ovs-ovn-d7hdt} ipsec status... | ||
| Interface name: ovn-a4718e-0 v1 (CONFIGURED) | ||
| Tunnel Type: geneve | ||
| Local IP: 172.18.0.2 | ||
| Remote IP: 172.18.0.4 | ||
| Address Family: IPv4 | ||
| SKB mark: None | ||
| Local cert: /etc/ipsec.d/certs/8aebd9df-46ef-47b9-85e3-73e9a765296d-cert.pem | ||
| Local name: 8aebd9df-46ef-47b9-85e3-73e9a765296d | ||
| Local key: /etc/ipsec.d/private/8aebd9df-46ef-47b9-85e3-73e9a765296d-privkey.pem | ||
| Remote cert: None | ||
| Remote name: a4718e55-5b85-4f46-90e6-63527d080590 | ||
| CA cert: /etc/ipsec.d/cacerts/cacert.pem | ||
| PSK: None | ||
| Custom Options: {} | ||
| Ofport: 2 | ||
| CFM state: Disabled | ||
| Kernel policies installed: | ||
| src 172.18.0.2/32 dst 172.18.0.4/32 proto udp sport 6081 | ||
| src 172.18.0.2/32 dst 172.18.0.4/32 proto udp sport 6081 | ||
| src 172.18.0.2/32 dst 172.18.0.4/32 proto udp dport 6081 | ||
| src 172.18.0.2/32 dst 172.18.0.4/32 proto udp dport 6081 | ||
| Kernel security associations installed: | ||
| sel src 172.18.0.2/32 dst 172.18.0.4/32 proto udp sport 6081 | ||
| sel src 172.18.0.4/32 dst 172.18.0.2/32 proto udp dport 6081 | ||
| sel src 172.18.0.2/32 dst 172.18.0.4/32 proto udp dport 6081 | ||
| sel src 172.18.0.4/32 dst 172.18.0.2/32 proto udp sport 6081 | ||
| IPsec connections that are active: | ||
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| Pod {ovs-ovn-fvbbj} ipsec status... | ||
| Interface name: ovn-8aebd9-0 v1 (CONFIGURED) | ||
| Tunnel Type: geneve | ||
| Local IP: 172.18.0.4 | ||
| Remote IP: 172.18.0.2 | ||
| Address Family: IPv4 | ||
| SKB mark: None | ||
| Local cert: /etc/ipsec.d/certs/a4718e55-5b85-4f46-90e6-63527d080590-cert.pem | ||
| Local name: a4718e55-5b85-4f46-90e6-63527d080590 | ||
| Local key: /etc/ipsec.d/private/a4718e55-5b85-4f46-90e6-63527d080590-privkey.pem | ||
| Remote cert: None | ||
| Remote name: 8aebd9df-46ef-47b9-85e3-73e9a765296d | ||
| CA cert: /etc/ipsec.d/cacerts/cacert.pem | ||
| PSK: None | ||
| Custom Options: {} | ||
| Ofport: 1 | ||
| CFM state: Disabled | ||
| Kernel policies installed: | ||
| src 172.18.0.4/32 dst 172.18.0.2/32 proto udp dport 6081 | ||
| src 172.18.0.4/32 dst 172.18.0.2/32 proto udp dport 6081 | ||
| src 172.18.0.4/32 dst 172.18.0.2/32 proto udp sport 6081 | ||
| src 172.18.0.4/32 dst 172.18.0.2/32 proto udp sport 6081 | ||
| Kernel security associations installed: | ||
| sel src 172.18.0.4/32 dst 172.18.0.2/32 proto udp dport 6081 | ||
| sel src 172.18.0.2/32 dst 172.18.0.4/32 proto udp sport 6081 | ||
| sel src 172.18.0.4/32 dst 172.18.0.2/32 proto udp sport 6081 | ||
| sel src 172.18.0.2/32 dst 172.18.0.4/32 proto udp dport 6081 | ||
| IPsec connections that are active: | ||
| ``` | ||
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| After the establishment is complete, you can capture packets and observe that the packets have been encrypted: | ||
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| ```bash | ||
| # tcpdump -i eth0 -nel esp | ||
| 10:01:40.349896 IP kube-ovn-worker > kube-ovn-control-plane.kind: ESP(spi=0xcc91322a,seq=0x13d0), length 156 | ||
| 10:01:40.350015 IP kube-ovn-control-plane.kind > kube-ovn-worker: ESP(spi=0xc8df4221,seq=0x1d37), length 156 | ||
| ``` | ||
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| After executing the script, you can turn off IPsec by executing the command: | ||
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| ```bash | ||
| # bash ipsec.sh stop | ||
| ``` | ||
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| Or execute the command to open it again: | ||
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| ```bash | ||
| # bash ipsec.sh start | ||
| ``` | ||
| Change the args `--enable-ovn-ipsec=false` in kube-ovn-controller and kube-ovn-cni to `--enable-ovn-ipsec=true`. |
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,94 +1,7 @@ | ||
| # 使用 IPsec 加密节点间通信 | ||
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| 该功能从 v1.10.11 和 v1.11.4 后开始支持，kernel 版本至少是 3.10.0 以上，同时需要保证主机 UDP 500 和 4500 端口可用。 | ||
| 该功能从 v1.13.0 后支持，同时需要保证主机 UDP 500 和 4500 端口可用。 | ||
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| ## 启动 IPsec | ||
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| 从 Kube-OVN 源码拷贝脚本 [ipsec.sh](https://raw.githubusercontent.com/kubeovn/kube-ovn/master/dist/images/ipsec.sh)，执行命令如下，该脚本会调用 ovs-pki 生成和分配加密需要的证书： | ||
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| ```bash | ||
| bash ipsec.sh init | ||
| ``` | ||
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| 执行完毕后，节点之间会协商一段时间建立 IPsec 隧道，经验值是十几秒到一分钟之间，可以通过如下命令来查看 IPsec 状态： | ||
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| ```bash | ||
| # bash ipsec.sh status | ||
| Pod {ovs-ovn-d7hdt} ipsec status... | ||
| Interface name: ovn-a4718e-0 v1 (CONFIGURED) | ||
| Tunnel Type: geneve | ||
| Local IP: 172.18.0.2 | ||
| Remote IP: 172.18.0.4 | ||
| Address Family: IPv4 | ||
| SKB mark: None | ||
| Local cert: /etc/ipsec.d/certs/8aebd9df-46ef-47b9-85e3-73e9a765296d-cert.pem | ||
| Local name: 8aebd9df-46ef-47b9-85e3-73e9a765296d | ||
| Local key: /etc/ipsec.d/private/8aebd9df-46ef-47b9-85e3-73e9a765296d-privkey.pem | ||
| Remote cert: None | ||
| Remote name: a4718e55-5b85-4f46-90e6-63527d080590 | ||
| CA cert: /etc/ipsec.d/cacerts/cacert.pem | ||
| PSK: None | ||
| Custom Options: {} | ||
| Ofport: 2 | ||
| CFM state: Disabled | ||
| Kernel policies installed: | ||
| src 172.18.0.2/32 dst 172.18.0.4/32 proto udp sport 6081 | ||
| src 172.18.0.2/32 dst 172.18.0.4/32 proto udp sport 6081 | ||
| src 172.18.0.2/32 dst 172.18.0.4/32 proto udp dport 6081 | ||
| src 172.18.0.2/32 dst 172.18.0.4/32 proto udp dport 6081 | ||
| Kernel security associations installed: | ||
| sel src 172.18.0.2/32 dst 172.18.0.4/32 proto udp sport 6081 | ||
| sel src 172.18.0.4/32 dst 172.18.0.2/32 proto udp dport 6081 | ||
| sel src 172.18.0.2/32 dst 172.18.0.4/32 proto udp dport 6081 | ||
| sel src 172.18.0.4/32 dst 172.18.0.2/32 proto udp sport 6081 | ||
| IPsec connections that are active: | ||
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| Pod {ovs-ovn-fvbbj} ipsec status... | ||
| Interface name: ovn-8aebd9-0 v1 (CONFIGURED) | ||
| Tunnel Type: geneve | ||
| Local IP: 172.18.0.4 | ||
| Remote IP: 172.18.0.2 | ||
| Address Family: IPv4 | ||
| SKB mark: None | ||
| Local cert: /etc/ipsec.d/certs/a4718e55-5b85-4f46-90e6-63527d080590-cert.pem | ||
| Local name: a4718e55-5b85-4f46-90e6-63527d080590 | ||
| Local key: /etc/ipsec.d/private/a4718e55-5b85-4f46-90e6-63527d080590-privkey.pem | ||
| Remote cert: None | ||
| Remote name: 8aebd9df-46ef-47b9-85e3-73e9a765296d | ||
| CA cert: /etc/ipsec.d/cacerts/cacert.pem | ||
| PSK: None | ||
| Custom Options: {} | ||
| Ofport: 1 | ||
| CFM state: Disabled | ||
| Kernel policies installed: | ||
| src 172.18.0.4/32 dst 172.18.0.2/32 proto udp dport 6081 | ||
| src 172.18.0.4/32 dst 172.18.0.2/32 proto udp dport 6081 | ||
| src 172.18.0.4/32 dst 172.18.0.2/32 proto udp sport 6081 | ||
| src 172.18.0.4/32 dst 172.18.0.2/32 proto udp sport 6081 | ||
| Kernel security associations installed: | ||
| sel src 172.18.0.4/32 dst 172.18.0.2/32 proto udp dport 6081 | ||
| sel src 172.18.0.2/32 dst 172.18.0.4/32 proto udp sport 6081 | ||
| sel src 172.18.0.4/32 dst 172.18.0.2/32 proto udp sport 6081 | ||
| sel src 172.18.0.2/32 dst 172.18.0.4/32 proto udp dport 6081 | ||
| IPsec connections that are active: | ||
| ``` | ||
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| 建立完成后可以抓包观察报文已经被加密： | ||
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| ```bash | ||
| # tcpdump -i eth0 -nel esp | ||
| 10:01:40.349896 IP kube-ovn-worker > kube-ovn-control-plane.kind: ESP(spi=0xcc91322a,seq=0x13d0), length 156 | ||
| 10:01:40.350015 IP kube-ovn-control-plane.kind > kube-ovn-worker: ESP(spi=0xc8df4221,seq=0x1d37), length 156 | ||
| ``` | ||
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| 当执行完脚本后，可以通过执行命令关闭 IPsec： | ||
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| ```bash | ||
| # bash ipsec.sh stop | ||
| ``` | ||
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| 或者执行命令再次打开： | ||
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| ```bash | ||
| # bash ipsec.sh start | ||
| ``` | ||
| 将 kube-ovn-controller 和 kube-ovn-cni 中的 args `--enable-ovn-ipsec=false` 修改为 `--enable-ovn-ipsec=true`。 |