KubeCon EU 2016: Getting the Jobs Done With Kubernetes
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Getting the Jobs Done With Kubernetes / OpenShift Maciej Szulik, KubeCon 2016 1 / 20
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Transcript of KubeCon EU 2016: Getting the Jobs Done With Kubernetes
Getting the Jobs Done With
Kubernetes / OpenShift
Maciej Szulik, KubeCon 2016
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soltysh @
https://github.com/soltysh/talks/
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Job
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Job apiVersion: batch/v1kind: Jobmetadata: name: hellospec: template: metadata: name: hello spec: containers: - name: hello image: python:3.5.1 command: ["python", "-c", "print('Hello world!')"] restartPolicy: Never
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Job
- api
-> apiVersion: batch/v1
kind: Jobmetadata: name: jobspec: template: metadata: name: job spec: containers: - name: job image: python:3.5.1 command: ["python", "-c", "print('Hello world!')"] restartPolicy: Never
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Job
- api
- command
apiVersion: batch/v1kind: Jobmetadata: name: jobspec: template: metadata: name: job spec: containers:
-> - name: job image: python:3.5.1 command: ["python", "-c", "print('Hello world!')"]
restartPolicy: Never
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Job
- api
- command
- restart policy
apiVersion: batch/v1kind: Jobmetadata: name: jobspec: template: metadata: name: job spec: containers: - name: job image: python:3.5.1 command: ["python", "-c", "print('Hello world!')"]
-> restartPolicy: Never
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Job
- api
- command
- restart policy
Always
OnFailure
Never
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Job
- api
- command
- restart policy
Always
OnFailure
Never
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Job
- api
- command
- restart policy
- pod selector?
apiVersion: batch/v1kind: Jobmetadata: name: jobspec: template: metadata: name: job spec: containers: - name: job image: python:3.5.1 command: ["python", "-c", "print('Hello world!')"] restartPolicy: Never
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Job
- api
- command
- restart policy
- pod selector?
- parallelism /completions
single jobs.spec.completions: 1.spec.parallelism: 1
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Job
- api
- command
- restart policy
- pod selector?
- parallelism /completions
single jobs.spec.completions: 1.spec.parallelism: 1
parallel job with a fixed completions count.spec.completions: 8.spec.parallelism: 4
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Job
- api
- command
- restart policy
- pod selector?
- parallelism /completions
single jobs.spec.completions: 1.spec.parallelism: 1
parallel job with a fixed completions count.spec.completions: 8.spec.parallelism: 4
parallel job with a work queue.spec.completions: <unset>
.spec.parallelism: 4
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Use Cases- data calculations
- image rendering
etc.
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Rendering
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Render demo
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Future workflow by @sdminonne
indexed jobs by @erictune
scheduled jobs by @soltysh
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Links
soltysh @
http://releases.k8s.io/master/docs/proposals/job.md
http://releases.k8s.io/master/docs/user-guide/jobs.md
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