Turning Containers into CattleSubbu Allamaraju

Container World Feb 2016

null hypothesis

Containers don’t matter

Cluster managers don’t matterSchedulers don’t matter

2

Heterogeneity is the norm

Operational overhead

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Change fragility

Ephemeral touch points

Mortal boxes

5

Classical automation

cycle

Remediate

Provision

Deploy

Monitor

Poorly or incompletely

implemented in reality

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Remediate

Provision

Deploy

Monitor

Implement desired state

Observe the current

state

Converge current state to the desired

state 8

Implement desired state

Observe the current

state

Converge current state to the desired

state

Describe the desired

state

Run the app in its desired state

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App’s view

App’s view

Here is my app’s

desired state

Run the app in its desired state

A format to build + ship + run

Policies to describe the desired state

Cluster manager

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Containers matter … to standardize how to build, ship and run

Cluster managers matter … to let apps declare intent and to coerce the

infrastructure to maintain that intent

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1. Genericity

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2. Declarative

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3. Hide full infrastructure stack

Compute Network Storage

Cluster manager

...

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Invisible infrastructureImmutable infrastructureDisposable infrastructure

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