„GitOps with Flux and Flagger“
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The document discusses GitOps utilizing Flux and Flagger to implement continuous deployment for cloud-native applications, highlighting its workflow, advantages, and challenges. Key benefits include traceability of changes, rollback capabilities, and automation of deployment processes, while challenges involve complexity in adoption, debugging issues, and securing sensitive information. It also introduces Flagger, which automates application release processes on Kubernetes and supports various deployment strategies like canary and blue/green deployments.
„GitOps with Flux and Flagger“
- 1. GitOps with Flux and Flagger 15.07.2021
- 2. Sebastian Tiggelkamp DevOps Engineer St. Cajetan-Straße 43 D-81669 Munich, Germany Phone: +49-89-45841-100 sebastian.tiggelkamp@consol.de www.consol.com Twitter: @consol_de
- 3. Enterprising IT. Portfolio Software Engineering Whether with modern software architecture, cloud-native software, IT integration or customized CI/CD pipelines – we understand our technological know-how as an offer to master the challenges of digitalization. IT Solutions We develop IT solutions with a high utility value and pursue ideas beyond our current business. The results? For example our software ConSol CM, our open source offer for test automation or Red Hat Solutions. IT Operations Managed services, IT operations or support – at ConSol you choose exactly the services that an efficient IT requires. For any project size, whether on premises or in the cloud. Individual SLAs ensure calculable costs at all times. IT Consulting No matter whether coaching, consulting in a special field or complete management of your IT project: With more than 30 years of competence, our consulting services are above all tailored to you and realizable. consol.com
- 4. GitOps with Flux and Flagger Slide 4 Agenda • Introduction • GitOps Workflow Advantages & Challenges • Flagger Canary Blue/Green Deployment • Demo • App deployment Flux & Flagger
- 5. GitOps with Flux and Flagger Slide 5 Introduction GitOps Using Git as the single source of truth to sync the desired state (stored in Git) with the current deployed state (e.g. application running on Kubernetes) automatically „GitOps is like DevOps powered by Git“ „GitOps is a way of implementing Continuous Deployment for cloud native applications“ „GitOps is the concept that deployments should be as easy as an engineer enacting a code change“
- 6. GitOps with Flux and Flagger Slide 6 GitOps Workflow
- 7. GitOps with Flux and Flagger Slide 7 GitOps Advantages Traceability All changes to the system are traceable and relate to a Git action (e.g. commit, PR) Prevent manual interactions GitOps Operator can automatically revert manual changes to the system Rollback The state of a target system can be rolled back by e.g. revert a Git commit Independency Any CI engine can be used to build & test your deployment before the GitOps process will take over
- 8. GitOps with Flux and Flagger Slide 8 GitOps Challenges Complexity Depending on the scope, changing from a traditional deployment process to a GitOps process can take some time Debugging It can be hard to locate errors in YAML manifests, especially if the number of manifests is growing Conflicts If the CI-Engine changes manifests, parallel write-operations need to be prevented Secrets All system relevant information are stored in Git Sensitive information like secrets need to be secured properly
- 9. GitOps with Flux and Flagger Slide 9 Flagger Introduction Automates the release process for applications running on k8s Integrates several deployment strategies Canary release Blue/Green Deployment A/B Testing Deployment progression is based on metrics that are queried Prometheus Datadog New Relic Cloudwatch Graphite
- 10. GitOps with Flux and Flagger Slide 10 Flagger Alerting / Notification Flagger can alert the user via Slack MS Teams Discord Rocket
- 11. GitOps with Flux and Flagger Slide 11 Flagger Metrics Builtin metrics HTTP request success rate & duration Custom metrics using MetricTemplates External metric provider Prometheus Datadog New Relic Cloudwatch Graphite
- 12. GitOps with Flux and Flagger Slide 12 Flagger Canary Deployment
- 13. GitOps with Flux and Flagger Slide 13 Flagger Blue/Green Deployment
- 14. Demo
- 15. Thank you! Q&A
- 16. ConSol Consulting & Solutions Software GmbH St.-Cajetan-Straße 43 D-81669 Munich Germany Tel.: +49-89-45841-100 info@consol.de www.consol.com Twitter: @consol_de