
The best Kubernetes CD tools: Plural CD vs. ArgoCD and FluxCD
GitOps tools like ArgoCD and FluxCD are the continuous delivery (CD) standard in Kubernetes. However, they often require additional configurations and integrations for multi-cluster management, observability, and enterprise security.
Table of Contents
GitOps tools like ArgoCD and FluxCD are the continuous delivery (CD) standard in Kubernetes. They automate deployments by syncing the application state with a version-controlled repository. However, they often require additional configurations and integrations for multi-cluster management, observability, and enterprise security.
Plural CD follows the GitOps model like ArgoCD and FluxCD but intrinsically includes multi-cluster orchestration, observability, and Global Services designed for enterprise-scale Kubernetes management.
Core CD Capabilities
Plural CD provides a robust GitOps-based continuous delivery system that aligns with the core functionalities of ArgoCD and FluxCD while offering enhanced support for multi-cluster environments.
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Declarative GitOps Workflow: Plural CD follows the declarative GitOps model, ensuring that Kubernetes manifests are always in sync with the source code repository. Like ArgoCD and FluxCD, every deployment is managed through version control, making rollbacks and audit trails seamless.
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Automated Deployments with Rollbacks: Plural CD supports automatic syncing of application states and intelligent rollback mechanisms that prevent faulty updates from propagating to production.
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Multi-Cluster GitOps, Built-In: ArgoCD supports multi-cluster deployments using ApplicationSets and other configurations. Plural CD offers built-in multi-cluster orchestration, reducing the need for additional configurations and making it easier to manage deployments across fleets.
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Drift Detection and Self-Healing: Plural CD continuously monitors the application state, detecting drift and automatically remediating inconsistencies by realigning the cluster state with the repository.
Core GitOps Model
Advanced Features Unique to Plural CD
Global services management for multi-cluster environments
Plural Global Services is a powerful feature for managing Kubernetes system add-ons across multiple clusters with minimal effort. Unlike traditional GitOps workflows, where updates must be applied individually to each cluster, Global Services allows users to define and deploy shared services centrally, ensuring consistency across a fleet.
For example, system components like cert-manager, ingress controllers, and service meshes often must be installed across all clusters. With Plural, instead of updating Terraform or GitOps config files 30 times for 30 clusters, users can define these services once and use tags to specify where they should be deployed. Plural then automates the rollout, ensuring all designated clusters remain synchronized without manual intervention.
Pipeline system for fleet management
One limitation of standard CNCF GitOps tools like ArgoCD and FluxCD is their focus on single-repo-to-single-cluster deployments. This approach works well for simple workflows but falls short when managing large-scale, multi-cluster environments that require coordinated, staged rollouts.
Plural CD introduces a robust pipeline system designed for fleet-wide deployments. It automates the entire deployment lifecycle while maintaining GitOps best practices.
Key Features of Plural’s Pipeline System:
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Automated PR-Based Workflows – Plural generates pull requests for each deployment stage, ensuring changes are reviewed and version-controlled before promotion.
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Approval Gates & Validation Controls – Deployment promotions can be restricted based on integration tests, manual approvals, or custom validation steps, adding an extra layer of security and reliability.
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Multi-Cluster Coordination—Pipelines in Plural can control global services, enabling structured, multi-stage cross-cluster rollouts.
Built-in monitoring and logging
Plural CD offers a comprehensive, out-of-the-box observability experience with built-in monitoring using Prometheus and centralized logging. This integrated approach provides developers with immediate insights into their deployment processes without requiring additional setup.
Setting up observability for ArgoCD, by contrast, is much more complicated. ArgoCD exposes Prometheus metrics for monitoring application sync status, API server activity, and cluster information, but implementing the complete monitoring stack typically requires additional configuration.
In terms of logging, ArgoCD generates logs that can be collected and analyzed, but centralized logging is not provided out of the box. Users often need to set up their own logging solutions to aggregate and analyze ArgoCD logs effectively. Achieving comprehensive log management requires additional effort and external tools.
Enterprise-Ready Features Unique to Plural
Security and access control are critical in enterprise Kubernetes environments, and Plural CD offers a robust, natively integrated security model that combines advanced RBAC with seamless SSO integration. Unlike ArgoCD, which requires manual role assignments and external authentication configuration, Plural provides a dynamic, scalable access control system tailored for large teams and complex infrastructures.
Fine-grained role-based Access Control (RBAC)
Plural’s RBAC system is designed for granular permission management, allowing administrators to define custom roles and policies at multiple levels:
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Cluster-wide access control: Assign roles at the cluster level for platform engineers.
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Namespace-scoped permissions: Restrict application teams' access to specific namespaces.
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Application-level RBAC: Provide developers with access to only their designated applications.
A key advantage of Plural’s RBAC is its dynamic role assignments—instead of manually managing users, roles are automatically mapped to teams based on their identity provider (IdP) groups. This ensures that permissions scale automatically as teams grow or change.
Direct Single Sign-On (SSO) Integration
Plural provides native support for OpenID Connect (OIDC) and SAML-based authentication, allowing enterprises to integrate identity providers like:
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Okta
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Azure Active Directory (AAD)
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Google Workspace
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Auth0 and custom OIDC providers
This direct integration eliminates the need for external authentication setups, reducing the risk of misconfiguration and providing a seamless login experience. Users can authenticate through their company’s SSO, and their roles and permissions are automatically assigned based on their IDP groups.
Plural’s SSO setup also includes:
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Automatic role provisioning that ensures users receive appropriate permissions upon login.
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Session expiration controls to enforce security best practices.
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Audit logs for tracking user activity and access attempts.
How Plural Compares to ArgoCD
While ArgoCD provides basic RBAC and authentication features, it lacks enterprise-level automation. Some other issues:
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Manual role assignments that don’t scale well for large teams.
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External authentication configuration, requiring admins to maintain separate identity provider setups.
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Limited namespace and application-level controls make it harder to enforce granular policies.
Plural integrates RBAC and SSO natively, potentially reducing manual configuration and operational complexity in access management.
Conclusion
Plural CD offers a comprehensive solution for continuous delivery that builds upon the GitOps principles established by ArgoCD and FluxCD while addressing key enterprise needs. Key advantages include:
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Native multi-cluster support, eliminating the need for additional configurations
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Global Services feature for efficient management of system components across clusters
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Sophisticated pipeline system enabling coordinated, staged rollouts across fleets
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Integrated monitoring and logging, reducing reliance on external tools
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Enterprise-ready security features with fine-grained RBAC and seamless SSO integration
While ArgoCD and FluxCD remain powerful tools for single-cluster GitOps, Plural CD's integrated approach offers a more scalable and manageable solution for organizations dealing with complex, multi-cluster Kubernetes environments. By consolidating advanced features into a single platform, Plural CD aims to reduce operational overhead, enhance security, and accelerate deployment processes for enterprise-scale Kubernetes management.
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