Flux

fluxcd.io
DevOps
Weekend Project

The GitOps family of projects

How to Replace Flux

Overview

Flux is a set of continuous and progressive delivery solutions for Kubernetes that are open and extensible. It enables GitOps for apps and infrastructure through declarative, automated deployments with automatic reconciliation. Flux is a CNCF Graduated project that works with existing tools and provides multi-tenancy support across Kubernetes clusters.

Features

20 features across 11 categories

Auditing & Compliance(1)

Pull Request Based Control

Everything is controlled through pull requests. Git history provides a sequence of transactions allowing recovery from any snapshot.

Automation(1)

Automated Container Image Updates

Push to Git and Flux does the rest. Flux can push back to Git with automated container image updates including image scanning and patching.

Also in: monday.com, Notion, Airtable

Cluster Management(1)

Multi-Cluster Management

Works with Cluster API to manage apps in same or other clusters, spin up additional clusters, and manage cluster lifecycle and fleets.

Dashboards & Monitoring(1)

Dashboard Ecosystem

Thriving ecosystem of integrations and products with great dashboards for monitoring and management.

Deployment(2)

GitOps for Apps and Infrastructure

Deploy apps with canaries, feature flags, and A/B rollouts. Manage any Kubernetes resource with infrastructure and workload dependency management built in.

Progressive Delivery with Flagger

Integration with Flagger for progressive delivery including canaries, feature flags, and A/B rollouts.

Also in: Kubernetes Dashboard, Hugging Face, Bitwarden

Infrastructure as Code(1)

Declarative & Automated Deployment

Describe entire desired state of system in Git including apps, configuration, dashboards, and monitoring. YAML enforces conformance to declared system with automatic syncing.

Integration(7)

CI Workflow Integration

Works with all CI workflow providers for seamless pipeline integration.

Container Registry Support

Integrates with all major container registries and fully integrates with OCI.

Helm Support

Full integration with Helm for package management.

Kustomize Support

Works with Kustomize for Kubernetes native configuration management.

Multi-Git Provider Support

Works with GitHub, GitLab, Bitbucket, and S3-compatible buckets as sources.

OCI as Source of Truth

Ability to use OCI as the single source of truth for both application code and configuration artifacts.

Webhook Support

GitHub, GitLab, Harbor and custom webhooks support for event-driven deployments.

Also in: monday.com, Notion, Airtable

Multi-Tenancy(1)

Multi-Tenancy Support

Uses true Kubernetes RBAC via impersonation and supports multiple Git repositories with multi-cluster infrastructure.

Notifications(1)

Slack Notifications

Send notifications to Slack and other chat systems for deployment events.

Policy & Compliance(1)

Policy-Driven Validation

Support for OPA, Kyverno, and admission controllers for policy enforcement.

Security(3)

Air-Gapped Environment Support

Ability to operate Flux in air-gapped environments for compliance and security requirements.

RBAC Support

Full Kubernetes RBAC integration for access control.

Security by Design

Pull vs. Push architecture, least privilege access, adherence to Kubernetes security policies, and tight integration with security tools and best-practices.

Cost Calculator

Pricing data not available for Flux. Check their website for current pricing.

Build vs Buy

Should you build a Flux alternative or buy the subscription? Estimate based on 20 features.

Buy Flux

Better Value
Monthly costContact Sales
3-year totalVaries
Time to deployDays

Build Your Own

Development cost$12,000
Maintenance$180/mo
3-year total$18,480
Dev time~1 months

Buying Flux saves ~$18,480 over 3 years vs building.

Estimates based on 20 features and a BuildScore of 5/5. Actual costs vary.

Integrations

16 known integrations

Azure Arc enabled KubernetesAzure DevOpsAzure Kubernetes ServicesBitbucketCluster APIFlaggerGitHubGitLabHarborHelmKubernetes Admission ControllersKustomizeKyvernoOPAS3-Compatible BucketsSlack