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Intro to GitOps with
Weave GitOps, Flagger
and Linkerd
In partnership with:
2
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3
Flynn
Technology Evangelist
Buoyant
Flynn is a technology evangelist at Buoyant, spreading
the good word and educating developers about the
Linkerd service mesh, Kubernetes, and cloud-native
development in general. He has spent nearly four
decades in software engineering from the kernel up
through distributed applications, with a common thread
of communications and security throughout, and is the
original author and a maintainer of the Emissary-ingress
API gateway. He is most easily found as @flynn on the
CNCF or Linkerd Slacks.
Stefan Prodan
Principal Engineer
Weaveworks
Stefan is a Principal Engineer at Weaveworks and an
open source contributor to cloud-native projects like
Flux, Flagger, Service Mesh Interface, and others. He
worked as a software architect and a DevOps
consultant, helping companies embrace DevOps and
the SRE movement. Stefan has over 15 years of
experience with software development and he enjoys
programming in Go and writing about distributed
systems.
Speaker introductions
4
● What is GitOps?
● What is a service mesh?
● Intro to Linkerd, Flux & Weave GitOps
● What is Progressive Delivery?
● How Weave GitOps and Linkerd work together to allow progressive delivery
● Demo
● Q&A
Agenda
5
What is GitOps?
GITOPS
➔ GitOps is a way to do Continuous
Delivery, it works by using Git as a
source of truth for declarative
infrastructure and workloads.
➔ For Kubernetes this means using
git push instead of
kubectl apply/delete or
helm install/upgrade/uninstall.
What is GitOps?
CNCF - GitOps Principles
A system
managed by
GitOps must
have its desired
state expressed
declaratively
Desired state is
stored in a way
that enforces
immutability,
versioning and
retains a
complete
version history
Software agents
automatically
pull the desired
state
declarations
from the source
Software agents
continuously
observe actual
system state
and attempt to
apply the
desired state
https://opengitops.dev
8
Git as the single source of truth
for Desired State
ALL intended operations are
committed by pull request
ALL diffs between intended and
observed state with automatic
and continuous reconciliation
ALL changes are observable,
verifiable and auditable
Test
IDE
Build
Kubernetes
GitOps
Continuous
Integration
GIT
“Immutability
Firewall”
Deployment
(clusters, apps)
Alerting
(events)
Management
(operations)
GitOps - The Operating Model for Cloud Native
Unifies Deployment,
Monitoring and Management
9
What is a service mesh?
10
What is a service mesh?
➔ Infrastructure layer providing security,
reliability, and observability features at a
platform level
◆ Uniform across the entire application
◆ No application changes required
◆ Owned and controlled by the platform
team
11
What is a service mesh?
➔ Infrastructure layer providing security,
reliability, and observability features at a
platform level
◆ Uniform across the entire application
◆ No application changes required
◆ Owned and controlled by the platform
team
12
What is a service mesh?
➔ Infrastructure layer providing security,
reliability, and observability features at a
platform level
◆ Uniform across the entire application
◆ No application changes required
◆ Owned and controlled by the platform
team
➔ Most meshes do this with userspace
proxies next to application Pods (the data
plane)
13
What is a service mesh?
➔ Infrastructure layer providing security,
reliability, and observability features at a
platform level
◆ Uniform across the entire application
◆ No application changes required
◆ Owned and controlled by the platform
team
➔ Most meshes do this with userspace
proxies next to application Pods (the data
plane)
➔ Other processes (the control plane)
manage the proxies
CP
14
What are we going to show today?
15
What we are going to show today
GitOps
Weave GitOps Flux Flagger
Linkerd
Ultralight, ultrafast, security-first service
mesh for Kubernetes.
➔ 6+ years in production
➔ 8,000+ Slack channel members
➔ 10,000+ GitHub stars
➔ 200+ contributors
➔ Weekly edge releases
➔ Open governance, neutral home
➔ CNCF graduated project
and many more...
Creators of
Ultralight, ultrafast, security-first service
mesh for Kubernetes.
➔ 6+ years in production
➔ 8,000+ Slack channel members
➔ 10,000+ GitHub stars
➔ 200+ contributors
➔ Weekly edge releases
➔ Open governance, neutral home
➔ CNCF graduated project
and many more...
Creators of
Linkerd is a service mesh.
Its purpose in life is to give every
developer the tools they need to create
secure, reliable, observable
cloud-native applications.
19
What does Linkerd do?
➔ Security: Transparent mTLS, cert
management and rotation, policy
➔ Reliability: Retries, timeouts, load
balancing, circuit breaking*
➔ Observability: Service-level golden
metrics: success rates, latencies,
throughput. Service topologies.
…in an ultralight package focused on
simplicity and security first.
20
Weaveworks and GitOps
Weaveworks is backed by solid investors
Weaveworks is a key partner with all the
major infrastructure and Kubernetes vendors
Weaveworks: the GitOps company
Weaveworks is deeply committed
to the Open Source Community
22
Flux | CNCF Project overview
The Flux project aims to provide a secure multi-tenant Continuous Delivery platform
on top of Kubernetes, supporting all the common practices and tooling in the field.
Flux v2 is powered by the GitOps Toolkit, a set of composable APIs and specialized tools for keeping
Kubernetes clusters in sync with sources of configuration, and automating updates to configuration
when there is new code to deploy.
Flagger is a Progressive Delivery tool that automates the release process for applications running on
Kubernetes. Flagger comes with a declarative model for decoupling the deployment of apps on
Kubernetes from the release process.
https://github.com/fluxcd/flux2
https://github.com/fluxcd/flagger
23
Weave GitOps
Weave GitOps is a continuous delivery product built on top of Flux, Flagger and
Kubernetes Cluster API.
The OSS edition offers a web dashboard providing insight into the deployment status of your
applications, source synchronization status and the health of the Flux system components.
The Enterprise edition offers cluster fleet management, self-service templates and profiles, policy as
code, fully automated continuous delivery pipelines that roll out a change in development to staging
and production, progressive delivery, and more.
https://github.com/weaveworks/weave-gitops
https://weave.works/product/gitops-enterprise
24
CD | Imperative & push based pipeline
25
CD | Declarative & pull based pipeline
26
CD | GitOps delivery pipeline
27
CD | GitOps + Progressive delivery pipeline
28
Flagger | Canary Release
29
Flagger | Deployment Strategies
● Canary Release (progressive traffic shifting)
○ Applications that expose HTTP or gRPC APIs
● A/B Testing (HTTP headers and cookies traffic routing)
○ User-facing applications that need session affinity
● Blue/Green (traffic mirroring)
○ Idempotent APIs
● Blue/Green (traffic switch)
○ Stateful applications
○ Legacy applications
30
Demo
Confidential do not distribute 31
● Teams can deliver software faster with automated
gates and checks. If they fail, automatically roll back.
● Easy to configure with one simple file.
● Application teams can choose their deployment
strategy such as Canary or Blue/Green.
● Teams can be notified on success or if things go
wrong and a roll back occurred via Slack, MS Teams,
…
● Platform operators can create templates requiring
progressive delivery deployments into application
teams workflows.
Weave GitOps Enterprise - Progressive Delivery
Fully managed on any
Kubernetes cluster
Buoyant Cloud automated upgrades, data plane
version tracking, mesh health alerts, and much,
much more.
BOOK A DEMO
buoyant.io/demo
33
Q&A
34
Whitepaper: Progressive Delivery
https://bit.ly/3K8oZwU
Learn more about Weave GitOps
www.weave.works/enterprise
Join us for more webinars
www.weave.works/events
Thank You
Join us for part two of this series!
Hands-on workshop
February 16
Real-World GitOps with Flagger and Linkerd
The creators of
SIGN UP TODAY!
buoyant.io/sma
Get your talk in! The CFP closes Feb 5

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Intro to GitOps with Weave GitOps, Flagger and Linkerd

  • 1. Intro to GitOps with Weave GitOps, Flagger and Linkerd In partnership with:
  • 2. 2 Webinar Platform - FAQs Using Zoom • You are in listen only mode • This webinar is being recorded • Q&A session will follow the presentation, please use the Q&A panel to submit questions • Hit escape to exit full screen • Slides and recording will be shared after the webinar Technical Issues - please visit Zoom Help https://support.zoom.us/hc/en-us/articles/206175806-Top-Questions
  • 3. 3 Flynn Technology Evangelist Buoyant Flynn is a technology evangelist at Buoyant, spreading the good word and educating developers about the Linkerd service mesh, Kubernetes, and cloud-native development in general. He has spent nearly four decades in software engineering from the kernel up through distributed applications, with a common thread of communications and security throughout, and is the original author and a maintainer of the Emissary-ingress API gateway. He is most easily found as @flynn on the CNCF or Linkerd Slacks. Stefan Prodan Principal Engineer Weaveworks Stefan is a Principal Engineer at Weaveworks and an open source contributor to cloud-native projects like Flux, Flagger, Service Mesh Interface, and others. He worked as a software architect and a DevOps consultant, helping companies embrace DevOps and the SRE movement. Stefan has over 15 years of experience with software development and he enjoys programming in Go and writing about distributed systems. Speaker introductions
  • 4. 4 ● What is GitOps? ● What is a service mesh? ● Intro to Linkerd, Flux & Weave GitOps ● What is Progressive Delivery? ● How Weave GitOps and Linkerd work together to allow progressive delivery ● Demo ● Q&A Agenda
  • 6. GITOPS ➔ GitOps is a way to do Continuous Delivery, it works by using Git as a source of truth for declarative infrastructure and workloads. ➔ For Kubernetes this means using git push instead of kubectl apply/delete or helm install/upgrade/uninstall. What is GitOps?
  • 7. CNCF - GitOps Principles A system managed by GitOps must have its desired state expressed declaratively Desired state is stored in a way that enforces immutability, versioning and retains a complete version history Software agents automatically pull the desired state declarations from the source Software agents continuously observe actual system state and attempt to apply the desired state https://opengitops.dev
  • 8. 8 Git as the single source of truth for Desired State ALL intended operations are committed by pull request ALL diffs between intended and observed state with automatic and continuous reconciliation ALL changes are observable, verifiable and auditable Test IDE Build Kubernetes GitOps Continuous Integration GIT “Immutability Firewall” Deployment (clusters, apps) Alerting (events) Management (operations) GitOps - The Operating Model for Cloud Native Unifies Deployment, Monitoring and Management
  • 9. 9 What is a service mesh?
  • 10. 10 What is a service mesh? ➔ Infrastructure layer providing security, reliability, and observability features at a platform level ◆ Uniform across the entire application ◆ No application changes required ◆ Owned and controlled by the platform team
  • 11. 11 What is a service mesh? ➔ Infrastructure layer providing security, reliability, and observability features at a platform level ◆ Uniform across the entire application ◆ No application changes required ◆ Owned and controlled by the platform team
  • 12. 12 What is a service mesh? ➔ Infrastructure layer providing security, reliability, and observability features at a platform level ◆ Uniform across the entire application ◆ No application changes required ◆ Owned and controlled by the platform team ➔ Most meshes do this with userspace proxies next to application Pods (the data plane)
  • 13. 13 What is a service mesh? ➔ Infrastructure layer providing security, reliability, and observability features at a platform level ◆ Uniform across the entire application ◆ No application changes required ◆ Owned and controlled by the platform team ➔ Most meshes do this with userspace proxies next to application Pods (the data plane) ➔ Other processes (the control plane) manage the proxies CP
  • 14. 14 What are we going to show today?
  • 15. 15 What we are going to show today GitOps Weave GitOps Flux Flagger
  • 17. Ultralight, ultrafast, security-first service mesh for Kubernetes. ➔ 6+ years in production ➔ 8,000+ Slack channel members ➔ 10,000+ GitHub stars ➔ 200+ contributors ➔ Weekly edge releases ➔ Open governance, neutral home ➔ CNCF graduated project and many more... Creators of
  • 18. Ultralight, ultrafast, security-first service mesh for Kubernetes. ➔ 6+ years in production ➔ 8,000+ Slack channel members ➔ 10,000+ GitHub stars ➔ 200+ contributors ➔ Weekly edge releases ➔ Open governance, neutral home ➔ CNCF graduated project and many more... Creators of Linkerd is a service mesh. Its purpose in life is to give every developer the tools they need to create secure, reliable, observable cloud-native applications.
  • 19. 19 What does Linkerd do? ➔ Security: Transparent mTLS, cert management and rotation, policy ➔ Reliability: Retries, timeouts, load balancing, circuit breaking* ➔ Observability: Service-level golden metrics: success rates, latencies, throughput. Service topologies. …in an ultralight package focused on simplicity and security first.
  • 21. Weaveworks is backed by solid investors Weaveworks is a key partner with all the major infrastructure and Kubernetes vendors Weaveworks: the GitOps company Weaveworks is deeply committed to the Open Source Community
  • 22. 22 Flux | CNCF Project overview The Flux project aims to provide a secure multi-tenant Continuous Delivery platform on top of Kubernetes, supporting all the common practices and tooling in the field. Flux v2 is powered by the GitOps Toolkit, a set of composable APIs and specialized tools for keeping Kubernetes clusters in sync with sources of configuration, and automating updates to configuration when there is new code to deploy. Flagger is a Progressive Delivery tool that automates the release process for applications running on Kubernetes. Flagger comes with a declarative model for decoupling the deployment of apps on Kubernetes from the release process. https://github.com/fluxcd/flux2 https://github.com/fluxcd/flagger
  • 23. 23 Weave GitOps Weave GitOps is a continuous delivery product built on top of Flux, Flagger and Kubernetes Cluster API. The OSS edition offers a web dashboard providing insight into the deployment status of your applications, source synchronization status and the health of the Flux system components. The Enterprise edition offers cluster fleet management, self-service templates and profiles, policy as code, fully automated continuous delivery pipelines that roll out a change in development to staging and production, progressive delivery, and more. https://github.com/weaveworks/weave-gitops https://weave.works/product/gitops-enterprise
  • 24. 24 CD | Imperative & push based pipeline
  • 25. 25 CD | Declarative & pull based pipeline
  • 26. 26 CD | GitOps delivery pipeline
  • 27. 27 CD | GitOps + Progressive delivery pipeline
  • 29. 29 Flagger | Deployment Strategies ● Canary Release (progressive traffic shifting) ○ Applications that expose HTTP or gRPC APIs ● A/B Testing (HTTP headers and cookies traffic routing) ○ User-facing applications that need session affinity ● Blue/Green (traffic mirroring) ○ Idempotent APIs ● Blue/Green (traffic switch) ○ Stateful applications ○ Legacy applications
  • 31. Confidential do not distribute 31 ● Teams can deliver software faster with automated gates and checks. If they fail, automatically roll back. ● Easy to configure with one simple file. ● Application teams can choose their deployment strategy such as Canary or Blue/Green. ● Teams can be notified on success or if things go wrong and a roll back occurred via Slack, MS Teams, … ● Platform operators can create templates requiring progressive delivery deployments into application teams workflows. Weave GitOps Enterprise - Progressive Delivery
  • 32. Fully managed on any Kubernetes cluster Buoyant Cloud automated upgrades, data plane version tracking, mesh health alerts, and much, much more. BOOK A DEMO buoyant.io/demo
  • 34. 34 Whitepaper: Progressive Delivery https://bit.ly/3K8oZwU Learn more about Weave GitOps www.weave.works/enterprise Join us for more webinars www.weave.works/events Thank You
  • 35. Join us for part two of this series! Hands-on workshop February 16 Real-World GitOps with Flagger and Linkerd The creators of SIGN UP TODAY! buoyant.io/sma
  • 36. Get your talk in! The CFP closes Feb 5