Keynote #Tech - Google : aperçu de la gestion des services distribués chez Google, par Bastien LEGRAS

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#OSSPARIS15 - Keynote TECH Google : aperçu de la gestion des services distribués chez Google Intervenant : Bastien LEGRAS, Google

Software

Bastien LEGRAS,
Google
Google : aperçu de la gestion des
services distribués chez Google

De Borg à Kubernetes ou l’art
d’ordonnancer des tâches
Bastien Legras (@bastienlegras)
Google Cloud Platform - Solution Engineering

$job hello_world = { runtime = { cell = 'ic' } // Cell (cluster) to run in binary = '.../hello_world_webserver' // Program to run args = { port = '%port%' } // Command line parameters requirements = { // Resource requirements ram = 100M disk = 100M cpu = 0.1 } replicas = 5 // Number of tasks } 10000 User view (optional) .$

What just
happened?
web
browsers
BorgMaster
link shard
UI
shard
BorgMaster
link shard
UI
shard
BorgMaster
link shard
UI
shard
BorgMaster
link shard
UI
shard
Cell
Schedul
er
borgcfg
web
browsers
schedule
r
Borglet Borglet Borglet Borglet
BorgMaster
link shard
read/U
I shard
Config
file
persistent
store (Paxos)
Binary
User view

Hello
world!
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Image by Connie
Zhou
User view
Hello
world!
Hello
world!
Hello
world! Hello
world!
Hello
world! Hello
world!
Hello
world!
Hello
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task-eviction rates
and causes
9
Failures

Images by
Connie Zhou
A 2000-machine service will
have >10 task exits per day
This is not a problem: it's normal
Failures

Multiple apps
per machine
Sharing
clusters
between
prod/batch
Advanced bin-
packing
algorithms
Efficiency
stranded resourcesavailable resources
one
machine

Multiple apps
per machine
Sharing
clusters
between
prod/batch
Advanced bin-
packing
algorithms
Efficiency

A few other moving parts
web
browsers
BorgMaster
link shard
UI
shardBorgMaster
link shard
UI
shardBorgMaster
link shard
UI
shardBorgMaster
link shard
UI
shard
Cell
Schedul
er
borgcfg
web
browsers
schedule
r
Borglet Borglet Borglet Borglet
BorgMaster
link shard
read/U
I shard
Config
file
persistent
store (Paxos)
Binary

app
agent
masterjob
config
A few other moving parts

app
agent
master
system config
monitoring
security accounting/planning
binaries + data
distribution
job
config
storage
Diagram from an original by Cody Smith.
A few other moving parts

A few other moving parts
app
agent
master
system config
monitoring
security accounting/planning
binaries + data
distribution
job
config
storage
Diagram from an original by Cody Smith.

Building what’s
next
17
Containers at Google
Developed as the only
practical way to
manage Google-scale
compute
Everything at Google
runs in a container
We launch over
2 Billion
containers per week.

κυβερνήτης:
pilot or helmsman
of a ship
http://kubernetes.i
o
Kubernetes

Kubernetes
Direct Borg analogues:
● Borg containers => Docker containers
● alloc (task group) => pod (container
group)
● Borglet => Kubelet
● Paxos => persistent, declarative specs
● reconciliation loops

New / improved:
● labels + label queries
● service abstraction
● composable microservices
● IP per pod
Kubernetes

Kubernetes Roadmap
Milestones
• 1.0 stable in June 2015
• 1.1 Nov 9th 2015 (perf, pod autoscaling, http LB, no APi
change)
Cloud Native Computing Foundation
• Linux Foundation
• VMWare, RedHat, Joyent, Mesosphere, Docker, IBM,
CloudFoundry, CoreOS, Cisco, Google, …
• cncf.io

Kubernetes: zero downtime update
at 1 million requests per
secondScales

Google Container Engine
(GKE)
Google Container Registry

bastien@google.com
@bastienlegras
http://kubernetes.io
http://goo.gl/1C4nuo (Borg paper)
Images by
Connie Zhou

RETROUVEZ TOUTE L’ACTUALITE
DE L’EVENEMENT SUR LE
COMPTE TWITTER OFFICIEL
@OSS_PARIS

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