ATO 2018 - What is Serverless Useful For?

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This document discusses serverless computing and introduces Dispatch, an open source serverless platform from VMware. It describes how serverless uses functions to provide a serverless computing experience across multiple clouds. Dispatch provides a production-ready functions stack that supports cloud events and can integrate with various identity providers and services. The document demonstrates Dispatch's capabilities through an example using Dispatch and Slack for chat-based automation and management of virtual machines and events. It outlines Dispatch's roadmap, including both standalone and Knative-based versions, and invites the reader to get involved.

Software

WHAT IS SERVERLESS
USEFUL FOR?
BUILDING A MULTI-CLOUD
AUTOMATION WITH DISPATCH
Karol Stepniewski & Berndt Jung
Cloud Native Apps @VMware

Agenda
2
Serverless, FaaS, Functions, and Use cases
What is Dispatch?
Demo
Wrapping up & next steps
Q & A

3
How Did We Get Here?
Increasingfocusonbusinesslogic
Decreasing concern (and control) over infrastructure implementation
Virtual machines
Functions
Containers
Bare Metal
Justwritecodethatmatters

4
What is a Function?
Auto-scaled Lower Cost
Event Driven Stateless Finite Lifespan

5
Use Cases
• RESTful services
• Stateless apps
• Bursting workloads
• Parallel processing
• Edge computing
• Mobile app
backends
• Log analysis
• Job queues
• ETL
• Machine Learning
• CI/CD pipelines
• Notifications
• Chat Ops
• Periodic jobs
• Monitoring and
alerting
• Provisioning
• Automation
ƒ(x)
Micro-services IoT Stream-processing DevOps IT Operations

6
Events in the Public Cloud
Or Serverless the easy way
Eco-system of Services
Connected via a common event bus
Events and triggers integrated into platform
But what if you’re not just in one cloud?
What about on-premise event producers and
consumers?

7
Serverless is...
• Functions
• PaaS/CaaS
• Managed Services
– Databases
– Queues
– Object Store
• API Gateways
• Etc.
But does everything have to be within a single cloud?
Serverless is More Than Just Functions

8
CloudEvents
- Cloud Events is now a
CNCF sandbox project
- Released 0.1 specification
- Showed multi-vendor
interoperability demo at
kubecon in Copenhagen
Tech community

9
Dispatch
Batteries-included production functions

10
What is Dispatch?
Enterprise Functions Stack
Cloud events native
Integrate almost any IDP
Production-ready
API-gateway

11
Under Construction
Dispatch 0.1.x
• Loosely Kubernetes Based
• Support multiple FaaS
backends
Dispatch Solo
• Single Binary
• Single Dependency (Docker)
Dispatch Knative
• Based on Knative building
blocks
• Tightly coupled to Kubernetes

12
Open sourced by Google with partners (Pivotal, IBM,
RedHat, etc)
Serverless building blocks for Kubernetes
• Build
– Pluggable framework for building container images on
Kubernetes from source
• Serving
– Auto-scaling containers from 0 (not just functions)
– Istio based routing with support for traffic splitting and
canary deployments
• Eventing
– Manage event sources and subscriptions
– Pluggable bus (Kafka, GCP pub/sub)
– CloudEvents based
What is Knative?

13
Dispatch Architecture
Customers
Administrators
Developers
External
Events
Inbound data
Dispatch component
Knative component
Image
Registry
(Harbor)
IDP/AD
Kubernetes (PKS)
Knative Eventing
API Gateway (Istio)IAM
Knative Serving Service Catalog
External OSB
Services
Dispatch API
Dispatch Operators
Knative Building
Dispatch dependency

14
Demo
Chat-ops with Dispatch and Slack
1
API-Gateway: POST /cloudmaster
Execute: cloudmaster.py
Create/List/Delete VM
Event-Driver: Listen for events
Execute: status.py
2 3
5 4

16
Low barrier to entry
• Shipped as single binary or VM appliance
• Only dependency is Docker
API compatible with Dispatch Knative*
• Shared UI/CLI
• Same functions and images
Lightweight
Explore Dispatch and Functions use-cases
• It ran the demo!
Dispatch Solo

17
Long-term bet on Knative
• VMware contributing directly to upstream Knative project
• Knative is still evolving significantly
Currently supported features
• Image management
• Function creation and execution
• API gateway*
Dispatch Knative

18
Want to get involved?
• vmwarecode.slack.com #dispatch
Tell us your use-cases
Become a committer
• https://github.com/vmware/dispatch
Wrapping Up

19
http://dispatchframework.io
https://knative.dev
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ATO 2018 - What is Serverless Useful For?

1. WHAT IS SERVERLESS USEFUL FOR? BUILDING A MULTI-CLOUD AUTOMATION WITH DISPATCH Karol Stepniewski & Berndt Jung Cloud Native Apps @VMware

2. Agenda 2 Serverless, FaaS, Functions, and Use cases What is Dispatch? Demo Wrapping up & next steps Q & A

3. 3 How Did We Get Here? Increasingfocusonbusinesslogic Decreasing concern (and control) over infrastructure implementation Virtual machines Functions Containers Bare Metal Justwritecodethatmatters

4. 4 What is a Function? Auto-scaled Lower Cost Event Driven Stateless Finite Lifespan

5. 5 Use Cases • RESTful services • Stateless apps • Bursting workloads • Parallel processing • Edge computing • Mobile app backends • Log analysis • Job queues • ETL • Machine Learning • CI/CD pipelines • Notifications • Chat Ops • Periodic jobs • Monitoring and alerting • Provisioning • Automation ƒ(x) Micro-services IoT Stream-processing DevOps IT Operations

6. 6 Events in the Public Cloud Or Serverless the easy way Eco-system of Services Connected via a common event bus Events and triggers integrated into platform But what if you’re not just in one cloud? What about on-premise event producers and consumers?

7. 7 Serverless is... • Functions • PaaS/CaaS • Managed Services – Databases – Queues – Object Store • API Gateways • Etc. But does everything have to be within a single cloud? Serverless is More Than Just Functions

8. 8 CloudEvents - Cloud Events is now a CNCF sandbox project - Released 0.1 specification - Showed multi-vendor interoperability demo at kubecon in Copenhagen Tech community

9. 9 Dispatch Batteries-included production functions

10. 10 What is Dispatch? Enterprise Functions Stack Cloud events native Integrate almost any IDP Production-ready API-gateway

11. 11 Under Construction Dispatch 0.1.x • Loosely Kubernetes Based • Support multiple FaaS backends Dispatch Solo • Single Binary • Single Dependency (Docker) Dispatch Knative • Based on Knative building blocks • Tightly coupled to Kubernetes

12. 12 Open sourced by Google with partners (Pivotal, IBM, RedHat, etc) Serverless building blocks for Kubernetes • Build – Pluggable framework for building container images on Kubernetes from source • Serving – Auto-scaling containers from 0 (not just functions) – Istio based routing with support for traffic splitting and canary deployments • Eventing – Manage event sources and subscriptions – Pluggable bus (Kafka, GCP pub/sub) – CloudEvents based What is Knative?

13. 13 Dispatch Architecture Customers Administrators Developers External Events Inbound data Dispatch component Knative component Image Registry (Harbor) IDP/AD Kubernetes (PKS) Knative Eventing API Gateway (Istio)IAM Knative Serving Service Catalog External OSB Services Dispatch API Dispatch Operators Knative Building Dispatch dependency

14. 14 Demo Chat-ops with Dispatch and Slack 1 API-Gateway: POST /cloudmaster Execute: cloudmaster.py Create/List/Delete VM Event-Driver: Listen for events Execute: status.py 2 3 5 4

15. 15 What's Next for Dispatch?

16. 16 Low barrier to entry • Shipped as single binary or VM appliance • Only dependency is Docker API compatible with Dispatch Knative* • Shared UI/CLI • Same functions and images Lightweight Explore Dispatch and Functions use-cases • It ran the demo! Dispatch Solo

17. 17 Long-term bet on Knative • VMware contributing directly to upstream Knative project • Knative is still evolving significantly Currently supported features • Image management • Function creation and execution • API gateway* Dispatch Knative

18. 18 Want to get involved? • vmwarecode.slack.com #dispatch Tell us your use-cases Become a committer • https://github.com/vmware/dispatch Wrapping Up

19. 19 http://dispatchframework.io https://knative.dev Links

20. 20 Questions?

Editor's Notes

AWS Lambda introduced 2014
Which brings me to CloudEvents... Specification drafted by the CNCF serverless working group Aims to bring interoperability between event sources across vendors/clouds/services

ATO 2018 - What is Serverless Useful For?

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Editor's Notes