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UnitedStack
April 10, 2016
Technology
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Steth Network Inspection
UnitedStack
April 10, 2016
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Transcript
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A network inspection tool for OpenStack. Steth
• 问题 • 归纳 • ⾃自动化 • 实现 • 愿景
问题
⼀一句话形容我的⼼心情 谁在乎,我的⼼心⾥里有多苦
虚拟机获取不到IP 公⺴⽹网IP不通 ⺴⽹网卡性能有问题 ⺴⽹网卡⼦子接⼝口有问题 交换机配置有问题 ⺴⽹网卡MTU有问题 ⺴⽹网桥配置有问题 ⺴⽹网卡Bond有问题
虚拟机获取不到IP 公⺴⽹网IP不通 ⺴⽹网卡性能有问题 ⺴⽹网卡⼦子接⼝口有问题 交换机配置有问题 ⺴⽹网卡MTU有问题 ⺴⽹网桥配置有问题 ⺴⽹网卡Bond有问题 抓包分析 配置检查
从⼀一张拓扑图说起
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归纳
• 分析数据路径 • 抓包和发包 • 检查⺴⽹网卡和⺴⽹网桥关联 • 检查⺴⽹网卡配置 • 检查交换机配置
• 分析数据路径 • 抓包和发包 • 检查⺴⽹网卡和⺴⽹网桥关联 • 检查⺴⽹网卡配置 • 检查交换机配置
⾃自动化
实现
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• Controller 通⽤用、简单
• RPC中间件 并发、同步、⾮非阻塞、易部署
• 发包 interface 报⽂文类型和内容 scapy
• 抓包 interface filter pypcap 报⽂文解析
• 提供易维护的OpenStack⺴⽹网络 • 提供可能的故障原因和解决思路 • 适应不同的⺴⽹网络部署⽅方案 愿景
https://github.com/openstack/steth https://launchpad.net/steth #openstack-steth
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