How to GitOps your cluster with Flux
Nowadays DevOps Engineers love different things about Infrastructure as Code. Be declarative when building and automating infrastructure, and perform the deployment through a GitOps deployment. What is GitOps? It is a way of managing the infrastructure and application so that the system is described declaratively and version controlled. It has an automated process that ensures that the deployed environment matches the state specified in a repository. Is it cool, am I right?! But, what about Kubernetes? Yes, we have the excellent YAML files, but wouldn't it be awesome to declare the state into a Git repository and wait for the cluster to automatically update itself instead of manually doing it? Here is the newly graduated CNCF project Flux! It allows you to declare, and automate your Kubernetes cluster by simply pushing code to a Git repository and letting K8s do the rest of the tedious work.
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How to GitOps your cluster with Flux
- 1. HOW TO GITOPS YOUR CLUSTER WITH FLUX DAVIDE IMOLA
- 2. Davide Imola DevOps Engineer at RedCarbon davideimola.com · @DavideImola · schrodinger-hat.it
- 3. What is GitOps? Is a way of managing your infrastructure and applications so that the whole system is described declaratively and version-controlled, and having an automated process of deployment.
- 5. • • • What are the benefits? managing the infra and app lifecycle within a single tool faster deployments helps the DevOps adoption of an organization
- 7. What is the difference between DevOps and GitOps? GitOps relies on automation and tool to manage and deploy code changes. DevOps focuses more in collaboration and communication between teams.
- 8. COOL! WHAT ABOUT IN KUBERNETES?
- 9. Say hello to Flux…
- 11. Flux is a CNCF Graduated Project that allows you to easily GitOps your Kubernetes cluster.
- 12. HACKING TIME
- 14. WHAT OTHER THINGS CAN I DO?
- 15. Image Update Automation It is possible to configure Flux to automatically update the application image by watching the images pushed on a specific registry.
- 16. • scan the container registry and fetch the image tags • select the latest tag based on the defined policy (semver, calver, regex) • replace the tag in Kubernetes manifests (YAML format) • checkout a branch, commit and push the changes to the remote Git repository • apply the changes in- cluster and rollout the container image
- 18. With Flux it is possible to simply manage applications made both with Kustomize and Helm, directly out of the box!
- 19. With Flagger it is possible to automate the release process for applications. It implements several deployment strategies (Canary releases, A/B testing, Blue/Green deployment).
- 20. Flux integrates a notification system too in order to notify the team on the status of the reconciliation.
- 22. See you all at Open Source Day 2023 24th March 2023 · osday.dev