Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Illustrated Guide To Kubernetes Networking

Avatar for Tim Hockin Tim Hockin
September 21, 2016
Technology
70k
97

Illustrated Guide To Kubernetes Networking

A short walk through of some ideas around container networking.

Avatar for Tim Hockin

Tim Hockin

September 21, 2016

More Decks by Tim Hockin

See All by Tim Hockin
Kubernetes in the 2nd Decade
Avatar for Tim Hockin thockin
0
520
Why Service is the worst API in Kubernetes, and what we can do about it
Avatar for Tim Hockin thockin
2
1.1k
Kubernetes Pod Probes
Avatar for Tim Hockin thockin
6
4.8k
Go Workspaces for Kubernetes
Avatar for Tim Hockin thockin
2
1.1k
Code Review in Kubernetes
Avatar for Tim Hockin thockin
2
1.9k
Multi-cluster: past, present, future
Avatar for Tim Hockin thockin
0
600
Kubernetes Controllers - are they loops or events?
Avatar for Tim Hockin thockin
11
4.1k
Kubernetes Network Models (why is this so dang hard?)
Avatar for Tim Hockin thockin
9
2.1k
KubeCon EU 2020: SIG-Network Intro and Deep-Dive
Avatar for Tim Hockin thockin
8
1.4k

Other Decks in Technology

See All in Technology
なぜハノーバーメッセに行くべきなのか 〜初参加だから語れること〜
Avatar for 田中 聖也 tanakaseiya
0
140
OpenID Connectによるサービス間連携
Avatar for Shigeki Shoji takesection
0
120
オンコールの負荷軽減のためのBits Assistant 活用方法 / How to Use Bits Assistant to Reduce the Workload on On-Call Staff
Avatar for SMS tech sms_tech
1
200
AI駆動開発でなんでもハンズオン環境をつくってみた
Avatar for yoshimi0227 yoshimi0227
0
160
形式手法特論：公平性制約の位相的特徴づけ #kernelvm / Kernel VM Study Kansai 12th
Avatar for y_taka_23 ytaka23
1
450
TypeScript で Platform SDK を作る技術
Avatar for Akira HIGUCHI toiroakr
1
320
権限管理設計を完全に理解した
Avatar for r-sugi rsugi
2
220
個人AIからチームAIへ：開発における品質と生産性の再設計
Avatar for Atsushi Nakatsugawa moongift
PRO
0
220
Java正規表現エンジン（NFA）の仕組みと パフォーマンスを維持するための最適化手法
Avatar for 竹内 雅和 takeuchi_132917
0
120
GitHub Copilot CLIでWebアクセシビリティを改善した話
Avatar for tomokusaba tomokusaba
0
110
Claude Codeですべての日常業務を爆速化しよう！
Avatar for みのるん minorun365
PRO
16
14k
インフラが苦手でも大丈夫！ 紙芝居 Kubernetes -WWGT 10周年編-
Avatar for Aoi Takahashi aoi1
1
260

Featured

See All Featured
Performance Is Good for Brains [We Love Speed 2024]
Avatar for Tammy Everts tammyeverts
12
1.7k
Sharpening the Axe: The Primacy of Toolmaking
Avatar for Bryan Cantrill bcantrill
46
2.8k
The Illustrated Children's Guide to Kubernetes
Avatar for Chris Short chrisshort
51
52k
A brief & incomplete history of 
UX Design for the World Wide Web: 1989–2019
Avatar for Jason CranfordTeague jct
2
380
A better future with KSS
Avatar for Kyle Neath kneath
240
18k
Ecommerce SEO: The Keys for Success Now & Beyond - #SERPConf2024
Avatar for Aleyda Solis aleyda
1
2k
Lightning talk: Run Django tests with GitHub Actions
Avatar for Sarah Abderemane sabderemane
0
180
Optimizing for Happiness
Avatar for Tom Preston-Werner mojombo
378
71k
Save Time (by Creating Custom Rails Generators)
Avatar for Garrett Dimon garrettdimon
PRO
32
3.1k
GraphQLとの向き合い方2022年版
Avatar for Yosuke Kurami quramy
50
15k
コードの90%をAIが書く世界で何が待っているのか / What awaits us in a world where 90% of the code is written by AI
Avatar for r-kagaya rkaga
61
44k
Max Prin - Stacking Signals: How International SEO Comes Together (And Falls Apart)
Avatar for Tech SEO Connect techseoconnect
PRO
0
170

Transcript

  1. Google Cloud Platform An Illustrated Guide to Kubernetes Networking Tim

    Hockin <[email protected]> Senior Staff Software Engineer @thockin

  2. Google Cloud Platform Layer 2: ethernet

  3. Google Cloud Platform node-a node-c node-b node-d 192.168.1.1/16 11:22:33:44:55:01 192.168.1.2/16

    01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04 L2 switch

  4. Google Cloud Platform node-a node-c node-b node-d L2 to: 192.168.1.3

    from: 192.168.1.1 GET / 192.168.1.1/16 11:22:33:44:55:01 192.168.1.2/16 01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04

  5. Google Cloud Platform node-d node-b node-a node-c L2 to: <broadcast>

    from: 11:22:33:44:55:01 who has 192.168.1.3? to: 192.168.1.3 from: 192.168.1.1 GET / 192.168.1.1/16 11:22:33:44:55:01 192.168.1.2/16 01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04 “ARP request”

  6. Google Cloud Platform node-a node-c node-b node-d L2 to: 192.168.1.3

    from: 192.168.1.1 GET / 192.168.1.1/16 11:22:33:44:55:01 192.168.1.2/16 01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04 to: 11:22:33:44:55:01 from: 11:22:33:44:55:03 I have 192.168.1.3 “ARP response”

  7. Google Cloud Platform node-a node-c node-b node-d L2 to: 192.168.1.3

    via: 11:22:33:44:55:03 from: 192.168.1.1 GET / 192.168.1.1/16 11:22:33:44:55:01 192.168.1.2/16 01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04

  8. Google Cloud Platform node-a root netns eth0: 192.168.1.1/16 11:22:33:44:55:01 L2

    with containers cbr0: 10.0.1.1/24 ctr-1 eth0: 10.0.1.2/24 ctr-2 eth0: 10.0.1.3/24 ctr-3 eth0: 10.0.1.4/24

  9. Google Cloud Platform node-a 192.168.1.1/16 11:22:33:44:55:01 node-c node-b node-d 192.168.1.2/16

    01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04 L2 ctr-1 10.0.1.2 aa:bb:cc:dd:e1:01 ctr-2 10.0.3.2 aa:bb:cc:dd:e3:02

  10. Google Cloud Platform node-a 192.168.1.1/16 11:22:33:44:55:01 node-c node-b node-d 192.168.1.2/16

    01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04 L2 ctr-1 10.0.1.2 aa:bb:cc:dd:e1:01 ctr-2 10.0.3.2 aa:bb:cc:dd:e3:02 to: 10.0.3.2 from: 10.0.1.2 GET /

  11. Google Cloud Platform node-a 192.168.1.1/16 11:22:33:44:55:01 node-c node-b node-d 192.168.1.2/16

    01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04 L2 ctr-1 10.0.1.2 aa:bb:cc:dd:e1:01 ctr-2 10.0.3.2 aa:bb:cc:dd:e3:02 to: 10.0.3.2 from: 10.0.1.2 GET / to: <broadcast> from: aa:bb:cc:dd:e1:01 who has 10.0.3.2? “ARP request”

  12. Google Cloud Platform node-a 192.168.1.1/16 11:22:33:44:55:01 node-c node-b node-d 192.168.1.2/16

    01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04 L2 ctr-1 10.0.1.2 aa:bb:cc:dd:e1:01 ctr-2 10.0.3.2 aa:bb:cc:dd:e3:02 to: 10.0.3.2 from: 10.0.1.2 GET / to: aa:bb:cc:dd:e1:01 from: 11:22:33:44:55:03 I have 10.0.3.2 “proxy ARP response”

  13. Google Cloud Platform node-a 192.168.1.1/16 11:22:33:44:55:01 node-c node-b node-d 192.168.1.2/16

    01:23:45:67:89:02 192.168.1.3/16 11:22:33:44:55:03 192.168.1.4/16 01:23:45:67:89:04 L2 ctr-1 10.0.1.2 aa:bb:cc:dd:e1:01 ctr-2 10.0.3.2 aa:bb:cc:dd:e3:02 to: 10.0.3.2 via: 11:22:33:44:55:03 from: 10.0.1.2 GET /

  14. Google Cloud Platform Layer 3 - IP

  15. Google Cloud Platform node-a node-c node-b node-d 192.168.1.1/32 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 gateway

  16. Google Cloud Platform node-a node-c node-b node-d 192.168.1.1/32 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 to: 192.168.1.3 from: 192.168.1.1 GET /

  17. Google Cloud Platform node-a node-c node-b node-d 192.168.1.1/32 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 to: 192.168.1.3 from: 192.168.1.1 GET /

  18. Google Cloud Platform node-a node-c node-b node-d 192.168.1.1/32 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 to: 192.168.1.3 from: 192.168.1.1 GET / routing decision, static or learned (e.g. BGP)

  19. Google Cloud Platform node-a 192.168.1.1/32 node-c node-b node-d 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 ctr-1 10.0.1.2 ctr-2 10.0.3.2

  20. Google Cloud Platform node-a 192.168.1.1/32 node-c node-b node-d 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 ctr-1 10.0.1.2 ctr-2 10.0.3.2 to: 10.0.3.2 from: 10.0.1.2 GET /

  21. Google Cloud Platform node-a 192.168.1.1/32 node-c node-b node-d 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 ctr-1 10.0.1.2 ctr-2 10.0.3.2 to: 10.0.3.2 from: 10.0.1.2 GET /

  22. Google Cloud Platform node-a 192.168.1.1/32 node-c node-b node-d 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 ctr-1 10.0.1.2 ctr-2 10.0.3.2 to: 10.0.3.2 from: 10.0.1.2 GET / routing decision, static or learned (e.g. BGP)

  23. Google Cloud Platform node-a 192.168.1.1/32 node-c node-b node-d 192.168.1.2/32 192.168.1.3/32

    192.168.1.4/32 L3 ctr-1 10.0.1.2 ctr-2 10.0.3.2 to: 10.0.3.2 from: 10.0.1.2 GET /

  24. Google Cloud Platform Overlays Q: When should I use an

    overlay? A: When nothing else works, or when you have specific reasons to want it (e.g. the added value of management)

  25. Google Cloud Platform node-a root netns eth0: 192.168.1.1/16 Overlay (e.g.

    flannel, weave) cbr0: 10.0.1.1/24 ctr-1 eth0: 10.0.1.2/24 ctr-2 eth0: 10.0.1.3/24 ctr-3 eth0: 10.0.1.4/24 flannel0: 10.0.1.254/16

  26. Google Cloud Platform node-a root netns eth0: 192.168.1.1/16 cbr0: 10.0.1.1/24

    ctr-1 eth0: 10.0.1.2/24 ctr-2 eth0: 10.0.1.3/24 ctr-3 eth0: 10.0.1.4/24 flannel0: 10.0.1.254/16 to: 10.0.3.2 from: 10.0.1.2 GET / Overlay (e.g. flannel, weave)

  27. Google Cloud Platform node-a root netns eth0: 192.168.1.1/16 cbr0: 10.0.1.1/24

    ctr-1 eth0: 10.0.1.2/24 ctr-2 eth0: 10.0.1.3/24 ctr-3 eth0: 10.0.1.4/24 flannel0: 10.0.1.254/16 to: 10.0.3.2 from: 10.0.1.2 GET / Overlay (e.g. flannel, weave)

  28. Google Cloud Platform node-a root netns eth0: 192.168.1.1/16 cbr0: 10.0.1.1/24

    ctr-1 eth0: 10.0.1.2/24 ctr-2 eth0: 10.0.1.3/24 ctr-3 eth0: 10.0.1.4/24 flannel0: 10.0.1.254/16 to: 10.0.3.2 from: 10.0.1.2 GET / Overlay (e.g. flannel, weave)

  29. Google Cloud Platform node-a root netns eth0: 192.168.1.1/16 cbr0: 10.0.1.1/24

    ctr-1 eth0: 10.0.1.2/24 ctr-2 eth0: 10.0.1.3/24 ctr-3 eth0: 10.0.1.4/24 flannel0: 10.0.1.254/16 to: 192.168.1.3 from: 192.168.1.1 encap: to: 10.0.3.2 from: 10.0.1.2 GET / Overlay (e.g. flannel, weave)

  30. Google Cloud Platform node-a 192.168.1.1/16 node-c node-b node-d 192.168.1.2/16 192.168.1.3/16

    192.168.1.4/16 ctr-1 10.0.1.2 ctr-2 10.0.3.2 Overlay (e.g. flannel, weave)

  31. Google Cloud Platform node-c root netns eth0: 192.168.1.3/16 cbr0: 10.0.3.1/24

    ctr-4 eth0: 10.0.3.2/24 ctr-5 eth0: 10.0.3.3/24 ctr-6 eth0: 10.0.3.4/24 flannel0: 10.0.3.254/16 to: 192.168.1.3 from: 192.168.1.1 encap: to: 10.0.3.2 from: 10.0.1.2 GET / Overlay (e.g. flannel, weave)

  32. Google Cloud Platform node-c root netns eth0: 192.168.1.3/16 cbr0: 10.0.3.1/24

    ctr-4 eth0: 10.0.3.2/24 ctr-5 eth0: 10.0.3.3/24 ctr-6 eth0: 10.0.3.4/24 flannel0: 10.0.3.254/16 to: 10.0.3.2 from: 10.0.1.2 GET / Overlay (e.g. flannel, weave)

  33. Google Cloud Platform node-c root netns eth0: 192.168.1.3/16 cbr0: 10.0.3.1/24

    ctr-4 eth0: 10.0.3.2/24 ctr-5 eth0: 10.0.3.3/24 ctr-6 eth0: 10.0.3.4/24 flannel0: 10.0.3.254/16 to: 10.0.3.2 from: 10.0.1.2 GET / Overlay (e.g. flannel, weave)

  34. Google Cloud Platform Overlays - the hard part

  35. Google Cloud Platform node-a 192.168.1.1/16 node-c non-node node-d 192.168.1.2/16 192.168.1.3/16

    192.168.1.4/16 ctr-1 10.0.1.2 ctr-2 10.0.3.2 Overlay (e.g. flannel, weave)

  36. Google Cloud Platform node-a 192.168.1.1/16 node-c non-node node-d 192.168.1.2/16 192.168.1.3/16

    192.168.1.4/16 ctr-1 10.0.1.2 ctr-2 10.0.3.2 to: 10.0.3.2 from: 192.168.1.2 GET / Overlay (e.g. flannel, weave)

  37. Google Cloud Platform node-a 192.168.1.1/16 node-c non-node node-d 192.168.1.2/16 192.168.1.3/16

    192.168.1.4/16 ctr-1 10.0.1.2 ctr-2 10.0.3.2 to: 10.0.3.2 from: 192.168.1.2 GET / Overlay (e.g. flannel, weave)

  38. Google Cloud Platform node-a 192.168.1.1/16 node-c non-node node-d 192.168.1.2/16 192.168.1.3/16

    192.168.1.4/16 ctr-1 10.0.1.2 ctr-2 10.0.3.2 to: 10.0.3.2 from: 192.168.1.2 GET / ?!?! Overlay (e.g. flannel, weave)

  39. Google Cloud Platform We need a bridge between the physical

    and overlay networks...

  40. Google Cloud Platform We need a bridge between the physical

    and overlay networks... • could: route to nodes • could: route to 1 or more bridge machines • could: run flannel on client machines

  41. Google Cloud Platform We need a bridge between the physical

    and overlay networks... • could: route to nodes • could: route to 1 or more bridge machines • could: run flannel on client machines • see “When should I use an overlay?”