Argo Rollouts vs Weave GitOps

Argo Rollouts is a self-hosted Kubernetes controller for managing how application updates reach users. It supports BlueGreen, Canary and Rolling Update strategies, with weighted traffic shifting through ingress controllers or service meshes. Without a traffic-routing provider, it can adjust ReplicaSet counts instead. Metric integrations let it assess KPIs and automate promotion or rollback, while leaving room for manual judgment. Supported providers include NGINX, AWS ALB, Istio and Traefik for traffic, and Prometheus, Datadog, New Relic, Graphite and InfluxDB for metrics. It can operate independently of Argo CD and respond to Kubernetes manifest changes whether they come from GitOps or traditional CI/CD. Each cluster running Rollout workloads needs its own controller and CRD; a Rollout specification covers one application, not dependencies among applications. Shared-resource or worker-queue applications may be a poor fit, and infrastructure applications are not recommended. Argo Rollouts is free and open source. It runs on Linux, macOS, Windows or self-hosted environments.

Weave GitOps extends Flux with deployment insights and tools for continuous delivery across teams. Its dashboard lets operators inspect application lifecycles, detect drift, check cluster health, roll back changes, and monitor operations. Both Open Source and Enterprise require a running Kubernetes cluster. The free Open Source edition includes a GitOps CLI for macOS and Linux. Enterprise adds deployment across multiple clusters in cloud and hybrid environments using Git and Cluster API. It supports canary, blue/green, and A/B rollouts, with success and rollback criteria based on metrics from Prometheus, Datadog, or New Relic. Enterprise also offers policy-as-code checks at commit, build, deploy, and runtime stages, plus team workspaces, multi-tenancy, role-based access, and enterprise identity integration. OIDC login and Kubernetes RBAC govern access. Infrastructure integrations include Terraform, Crossplane, and any Cluster API provider. Enterprise advertises critical 24/7 support for workloads and requires an entitlement from Weaveworks. The Open Source installation guide notes that dashboard login sessions are not persisted when scaling to multiple replicas.