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
KubeCon Talk 2016- Basics of Kubernetes Service...
Search
Brandon Philips
November 08, 2016
Programming
0
540
KubeCon Talk 2016- Basics of Kubernetes Service Discovery
Demo uses
https://coreos.com/kubernetes/docs/latest/network-troubleshooting.html
Brandon Philips
November 08, 2016
Tweet
Share
More Decks by Brandon Philips
See All by Brandon Philips
Node.js Workflow with Minikube and Skaffold
philips
0
250
Manage the App on Kubernetes
philips
0
330
Production Backbone Monitoring Containerized Apps
philips
0
140
KubeCon EU 2017: Dancing on the Edge of a Volcano
philips
1
670
rkt - KubeCon EU keynote - 2017
philips
1
240
FOSDEM_Keynote_2017-_.pdf
philips
0
110
Tectonic Summit Day 2 Keynote
philips
0
320
Kubernetes: Simple to Manage Anywhere (self-hosted, Tectonic upgrade demo)
philips
0
340
KubeCon Keynote 2016- Distributed Systems Simplified on Kubernetes
philips
2
540
Other Decks in Programming
See All in Programming
“いい感じ“な定量評価を求めて - Four Keysとアウトカムの間の探求 -
nealle
0
680
#kanrk08 / 公開版 PicoRubyとマイコンでの自作トレーニング計測装置を用いたワークアウトの理想と現実
bash0c7
1
670
明示と暗黙 ー PHPとGoの インターフェイスの違いを知る
shimabox
2
420
GraphRAGの仕組みまるわかり
tosuri13
8
520
「Cursor/Devin全社導入の理想と現実」のその後
saitoryc
0
690
Composerが「依存解決」のためにどんな工夫をしているか #phpcon
o0h
PRO
1
250
Result型で“失敗”を型にするPHPコードの書き方
kajitack
4
570
Blazing Fast UI Development with Compose Hot Reload (droidcon New York 2025)
zsmb
1
280
ソフトウェア品質を数字で捉える技術。事業成長を支えるシステム品質の マネジメント
takuya542
0
690
Benchmark
sysong
0
280
WindowInsetsだってテストしたい
ryunen344
1
220
地方に住むエンジニアの残酷な現実とキャリア論
ichimichi
5
1.5k
Featured
See All Featured
Building Adaptive Systems
keathley
43
2.6k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
26k
RailsConf 2023
tenderlove
30
1.1k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
Build The Right Thing And Hit Your Dates
maggiecrowley
36
2.8k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
281
13k
Code Review Best Practice
trishagee
69
18k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
44
2.4k
Become a Pro
speakerdeck
PRO
28
5.4k
A Tale of Four Properties
chriscoyier
160
23k
How to Ace a Technical Interview
jacobian
277
23k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
Transcript
Brandon Philips @brandonphilips |
[email protected]
| coreos.com Kubernetes Service Discovery
Fundamentals and Extensions
90+ Projects on GitHub, 1,000+ Contributors OPEN SOURCE Secure solutions,
support plans, training + more ENTERPRISE CoreOS is Running the World’s Containers Linux
Examples minikube
- Use the quickstart tutorial - Or try out rkt
quickstart - Ensure you get kubectl work: kubectl get nodes NAME STATUS AGE minikube Ready 6m minikube
Overview Label Service Discovery
Fundamental API Server - API Server is bedrock of discovery
- Available at well-known URL - Protected by TLS and accounts
Fundamental Labels
Fundamental Labels
kubectl run nginx --image=nginx -l app=nginx kubectl get replicaset -l
app=nginx kubectl get pods -l app=nginx -w Fundamental Labels
Fundamental Labels
kubectl expose deployment nginx --port 80 --type=NodePort minikube service nginx
Fundamental Labels
Overview Above the API
- Configured statically in kubelet (--cluster-dns) - Injected into /etc/resolv.conf
of containers - Meta alert: DNS Service IP backed by Kubernetes - kubectl describe service -n kube-system kube-dns DNS Add-on
Name: kube-dns Namespace: kube-system Labels: k8s-app=kube-dns Selector: k8s-app=kube-dns Type: ClusterIP
IP: 10.0.0.10 Port: dns 53/UDP Endpoints: 10.1.0.3:53 kube-dns the service
DNS Add-on Basics API Server kube-dns Service 10.0.0.10 dig +vc
-p @10.0.0.10 kube-dns.kube-system.svc.cluster.local ;; QUESTION SECTION: ;kube-dns.kube-system.svc.cluster.local. IN A ;; ANSWER SECTION: kube-dns.kube-system.svc.cluster.local. 30 IN A 10.0.0.10
Copy/paste one-liner to forward DNS to localhost $ dig +vc
-p 5300 @127.0.0.1 cluster.local kube-dns proxy to localhost
$ dig A etcd-0000.default.cluster.local etcde-0001.default.svc.cluster.local. 30 IN A 10.0.0.40 $
dig SRV _client._tcp.etcd-0000.default.cluster.local IN SRV 10 100 2379 etcde-0001.default.svc.cluster.local. DNS Add-on - Records
$ dig A etcd-0000 IN A 10.0.0.40 $ dig A
etcd-0000.default IN A 10.0.0.40 DNS Add-on - Search
Full docs are comprehensive I helped write them :) http://kubernetes.io/docs/admin/dns/
kube-dns full docs
tectonic.com/summit - @TectonicSummit December 12 & 13 2016 - New
York City
Thank you! Brandon Philips @brandonphilips |
[email protected]
| tectonic.com We’re
hiring in all departments! Email:
[email protected]
Positions: coreos.com/ careers