20131011 MidoNet 10分クッキング

歴史的遺物
2013/10/11 に Vyatta ユーザ会において当時の MidoNet の概要を紹介した資料。

Transcript

1. MidoNet 10 min Cooking 2013೥10݄11೔ ϛυΫϥδϟύϯגࣜձࣾ @r_takashima
2. 2 Photo Credit: sirwiseowl via Compfight cc స৬͠·ͨ͠!
   
3. 
   What’s “MidoNet”?
   Photo Credit: Micky Aldridge via flickr cc
4. Copyright ©2013 Midokura All rights reserved
   FAQ
   
   SDN ੡඼͖ͬͯ ͍ͨΜ͚ͩͲ…
   ͋ɺOpenFlow ͱ͔ʁ
   ”No” Ͱ͸ͳ͍͚Ͳ
   “Yes”
   ͱ΋౴͑ਏ͍…
   աڈʹ࢖ͬͯͨ͜ͱ΋͋ΔΒ͍͠…
   
5. Copyright ©2013 Midokura All rights reserved
   Answer
   
   MidoNet ͸ɺ Server-side Edge Overlay ͳ IaaS ޲͚ͷωοτϫʔΫελοΫ Ͱ͢
6. Copyright ©2013 Midokura All rights reserved
   Server-side Edge overlay ?
   
   ֓೦ਤ
   Virtual Switch VM
   VM
   VM
   Virtual Switch VM
   VM
   VM
   Virtual Switch VM
   VM
   VM
   Virtual Switch VM
   VM
   VM
   Virtual Switch VM
   VM
   VM
   Virtual Switch VM
   VM
   VM
   Physical Network
   Ø  NVGRE, VXLAN ౳ɺIP based tunneling Λར༻ Ø  Underlay Network ͸ IP Reachability ͑͋͞Ε͹ྑ͍ Ø  Ͳ͏Τοδʹ৘ใΛಉظ͢Δ͔͕݁ߏϛι
7. ͲΜͳ࣮૷ʁ
   
   Photo Credit: [martin] via Compfight cc
8. Copyright ©2013 Midokura All rights reserved
   Summary
   
   VM
   Upstream ISP
   vPort
   vPort
   vPort
   vPort
   VM
   VM
   vPort
   vPort
   VM
   VM
   vPort
   Tenant A Router Tenant A Bridge 1 Tenant A Bridge 2 Tenant B Bridge 1 Tenant B Router The Internet
   Α͋͘Δ
   IaaS ͷ࿦ཧτϙϩδ
   BGP uplink
   Provider Router Upstream ISP
   The Internet
   VM
   MidoNet
   Compute Node
   VM
   MidoNet
   Compute Node
   VM
   MidoNet
   Compute Node
   MidoNet
   Gateway Node
   MidoNet
   Gateway Node
   Back-end Network Network State Node
   NW State DB NW State DB NW State DB MidoNet ͷ෺ཧτϙϩδ
   BGP uplink
   API Node
   Cloud Mgmt System
   Only requirement is an IP reachability!
   ݸʑͷNWػثͰ ͸ͳ͘ɺ࿦ཧτϙ ϩδશମΛΤϛϡ Ϩʔτ
   
9. Copyright ©2013 Midokura All rights reserved
   MidoNet Implementation Deep-dive
   
   Upstream ISP
   The Internet
   VM
   MidoNet
   Compute Node
   VM
   MidoNet
   Compute Node
   VM
   MidoNet
   Compute Node
   MidoNet
   Gateway Node
   MidoNet
   Gateway Node
   Back-end Network Network State Node
   NW State DB NW State DB NW State DB MidoNet ͷίϯϙʔωϯτ
   BGP uplink
   API Node
   Cloud Mgmt System
   ϗετOS্ͷOVS kernel module
   Data path
   ϗετOSͰಈ࡞͢Δϓϩηεɻ NSDB͔ΒΦϯσϚϯυͰඞཁͳ৘ใ Λμ΢ϯϩʔυ͠τϙϩδΤϛϡϨʔ γϣϯΛ࣮ࢪɻ ݁ՌΛ Data path ʹϓϩάϥϛϯάɻ
   Agent
   Zookeeper, Cassandra. τϙϩδ৘ใͷอ࣋ɺIP-MAC tableɺ ઀ଓϗετ৘ใ౳ͷશମ৘ใΛ࣋ͭ ʮίϯτϩʔϥʯͰ͸ͳ͘ʮσʔλϕ ʔεʯɻϓογϡ഑৴ΛۃྗߦΘͳ͍ NSDB
   
10. Copyright ©2013 Midokura All rights reserved
    How does it work ? / For 1st packet
    
    Upstream ISP
    The Internet
    VM
    MidoNet
    Compute Node
    VM
    MidoNet
    Compute Node
    VM
    MidoNet
    Compute Node
    MidoNet
    Gateway Node
    MidoNet
    Gateway Node
    Back-end Network Network State Node
    NW State DB NW State DB NW State DB BGP uplink
    API Node
    Cloud Mgmt System
    VM sends packet and OVS receives it.
    11 If OVS doesn’t has an entry matches with the packet, then 22 11 MidoNet Agent checks local topology data. If it doesn’t have enough data for it, then 33 33 33 44 MidoNet Agent downloads information that is necessary for topology emulation of the packet. 44 44
11. Copyright ©2013 Midokura All rights reserved
    How does it work ? / For 1st packet
    
    Upstream ISP
    The Internet
    VM
    MidoNet
    Compute Node
    VM
    MidoNet
    Compute Node
    VM
    MidoNet
    Compute Node
    MidoNet
    Gateway Node
    MidoNet
    Gateway Node
    Back-end Network Network State Node
    NW State DB NW State DB NW State DB BGP uplink
    API Node
    Cloud Mgmt System
    MidoNet Agent simulates the topology and programs local OVS data-path according to the result.
    55 Local OVS modifies header, encapsulates GRE and forwards it. 66 55 Remote OVS decaps GRE and forwards it to destination VM. 77 66 77
12. Կ͕͏Ε͍͠ͷʁ
    
    
13. Copyright ©2013 Midokura All rights reserved
    1. East-West τϥϑΟοΫͷ࠷దԽ
    
    ैདྷͷVirtual Router
    Upstream ISP
    Upstream ISP
    Back-end Network Upstream ISP
    Upstream ISP
    Back-end Network NetworkػثΛVMͱͯ͠ΤϛϡϨʔγϣϯ
    Network TopologyશମΛΤϛϡϨʔγϣϯ
    MidoNet
    Drop
    Drop
    Drop
    Drop
    IngressͰͷτϙϩδΤϛϡϨʔτʹΑΓɺ໨త஍ͱͳΔϗετ ʹ௚઀సૹ͢Δҝɺ”ߦͬͯདྷ͍” ͕ൃੜ͠ͳ͍
    
    
14. Copyright ©2013 Midokura All rights reserved
    2. ϘτϧωοΫͱͳΔϧʔλVMͷഉআ
    
    Upstream ISP
    Upstream ISP
    Back-end Network τϙϩδΤϛϡϨʔγϣϯʹΑΓΤοδͰ ෼ࢄॲཧ͢ΔҝɺϧʔλVM͕ଘࡏ͠ͳ͍
    ֤MidoNet Agent ͕ IP-MACରԠ දΛ࣋ͪɺಉҰϗετ಺VM͔ ΒͷARPʹ୅ཧԠ౴
    VMͰ͸ͳ͘ɺϗετOSͰͷϑΥϫʔσΟϯάॲཧ
    
15. Copyright ©2013 Midokura All rights reserved
    3. εέʔϥϏϦςΟ
    
    
    
    
    Upstream ISP
    VM
    MidoNet
    Compute Node
    VM
    MidoNet
    Compute Node
    VM
    MidoNet
    Compute Node
    MidoNet
    Gateway Node
    MidoNet
    Gateway Node
    Back-end Network Network State Node
    NW State DB NW State DB NW State DB BGP uplink
    Cloud Mgmt System
    API Node
    VLANΛར༻͠ͳ͍τϙϩδΤϛϡϨ ʔγϣϯͷҝɺ4,096 ͷนʹ੍ݶ͞Ε ͣεέʔϧΞ΢τ͕Մೳ
    શମͷMAC table ͸෼ࢄDB্ʹ֨ೲ͞ ΕΔҝɺεέʔϧΞ΢τՄೳ
    ֤αʔόͷσʔλύεʹϓϩάϥϛϯά͞ ΕΔ΋ͷ͸ऩ༰͢ΔVMͷ௨৴ͷΈ
    
16. Copyright ©2013 Midokura All rights reserved
    4. Underlay Network ͷ؆қੑ
    
    
    Upstream ISP
    VM
    MidoNet
    Compute Node
    VM
    MidoNet
    Compute Node
    VM
    MidoNet
    Compute Node
    MidoNet
    Gateway Node
    MidoNet
    Gateway Node
    Back-end Network Network State Node
    NW State DB NW State DB NW State DB BGP uplink
    Cloud Mgmt System
    API Node
    ֤ MidoNet Agent ؒ௨৴͸ GRE Ͱ ΧϓηϧԽ ˠ IP Reachability ͑͋͞Ε͹Α͍ ˠ IGP Λ༻͍ͨ L3 εέʔϧΞ΢τ ͕ར༻Մೳ
    
17. 
    Thank you!