Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Illustrated Guide To Kubernetes Networking
Search
Tim Hockin
September 21, 2016
Technology
97
68k
Illustrated Guide To Kubernetes Networking
A short walk through of some ideas around container networking.
Tim Hockin
September 21, 2016
Tweet
Share
More Decks by Tim Hockin
See All by Tim Hockin
Kubernetes in the 2nd Decade
thockin
0
420
Why Service is the worst API in Kubernetes, and what we can do about it
thockin
2
980
Kubernetes Pod Probes
thockin
6
4.6k
Go Workspaces for Kubernetes
thockin
2
1.1k
Code Review in Kubernetes
thockin
2
1.8k
Multi-cluster: past, present, future
thockin
0
530
Kubernetes Controllers - are they loops or events?
thockin
11
4k
Kubernetes Network Models (why is this so dang hard?)
thockin
9
1.9k
KubeCon EU 2020: SIG-Network Intro and Deep-Dive
thockin
8
1.3k
Other Decks in Technology
See All in Technology
だいたい分かった気になる 『SREの知識地図』 / introduction-to-sre-knowledge-map-book
katsuhisa91
PRO
3
1.5k
プロダクト開発と社内データ活用での、BI×AIの現在地 / Data_Findy
sansan_randd
1
590
Azure Well-Architected Framework入門
tomokusaba
1
140
CREが作る自己解決サイクルSlackワークフローに組み込んだAIによる社内ヘルプデスク改革 #cre_meetup
bengo4com
0
350
猫でもわかるAmazon Q Developer CLI 解体新書
kentapapa
1
130
re:Inventに行くまでにやっておきたいこと
nagisa53
0
640
AI時代の発信活動 ~技術者として認知してもらうための発信法~ / 20251028 Masaki Okuda
shift_evolve
PRO
1
120
様々なファイルシステム
sat
PRO
0
260
アウトプットから始めるOSSコントリビューション 〜eslint-plugin-vueの場合〜 #vuefes
bengo4com
3
1.8k
激動の時代を爆速リチーミングで乗り越えろ
sansantech
PRO
1
150
AIプロダクトのプロンプト実践テクニック / Practical Techniques for AI Product Prompts
saka2jp
0
120
プロファイルとAIエージェントによる効率的なデバッグ / Effective debugging with profiler and AI assistant
ymotongpoo
1
450
Featured
See All Featured
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
46
2.5k
The Art of Programming - Codeland 2020
erikaheidi
56
14k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
46
7.7k
VelocityConf: Rendering Performance Case Studies
addyosmani
333
24k
How GitHub (no longer) Works
holman
315
140k
Agile that works and the tools we love
rasmusluckow
331
21k
Fireside Chat
paigeccino
41
3.7k
Designing Experiences People Love
moore
142
24k
RailsConf 2023
tenderlove
30
1.3k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
35
3.2k
Faster Mobile Websites
deanohume
310
31k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
Transcript
Google Cloud Platform An Illustrated Guide to Kubernetes Networking Tim
Hockin <
[email protected]
> Senior Staff Software Engineer @thockin
Google Cloud Platform Layer 2: ethernet
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
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
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”
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”
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
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
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
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 /
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”
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”
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 /
Google Cloud Platform Layer 3 - IP
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
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 /
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 /
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)
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
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 /
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 /
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)
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 /
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)
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
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)
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)
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)
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)
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)
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)
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)
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)
Google Cloud Platform Overlays - the hard part
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)
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)
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)
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)
Google Cloud Platform We need a bridge between the physical
and overlay networks...
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
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?”