ArgoCD is a declarative, GitOps continuous delivery tool for Kubernetes. It automates the deployment of applications by syncing your Kubernetes clusters with configuration stored in a Git repository. This means your desired application state is defined in Git, and ArgoCD ensures your cluster matches that state.
With ArgoCD, you can easily visualize, manage, and roll back deployments, making it simple to maintain consistency and reliability across environments. It supports features like automated syncing, health status monitoring, and access control, making it a popular choice for teams adopting GitOps practices in Kubernetes.
- GitOps-Based Deployment: ArgoCD continuously monitors your Git repositories for changes and automatically applies them to your Kubernetes clusters, ensuring your cluster state always matches what’s defined in Git
- Declarative Application Management: Applications and their configurations are defined as code (YAML manifests) in Git, making them version-controlled and easy to track when changes are made using Git blame
- Automated Sync and Rollback: ArgoCD can automatically sync your cluster to the desired state and provides easy rollback to previous versions if something goes wrong
- Visual Dashboard: It offers a web UI to visualize application status, view differences between live and desired states, and manage deployments
- Access Control: Supports role-based access control (RBAC) and integrates with SSO providers for secure multi-user environments
- Health and Status Monitoring: Continuously checks the health of your applications and alerts you to any issues or drifts from the desired state
- Connect to Git: You configure ArgoCD to watch one or more Git repositories containing your Kubernetes manifests. This can be done using SSH keys or Git tokens
- Application Definition: Each application is defined by a manifest in Git, specifying the source repo, target cluster, and namespace. Your application definition can even use Helm charts to deploy
- Sync Process: ArgoCD compares the desired state (in Git) with the live state (in the cluster). If there are differences, it can automatically or manually sync the cluster to match Git
- Monitoring and Alerts: ArgoCD continuously monitors for drifts and provides alerts or visual cues in the dashboard if the live state diverges from the desired state such as notifying a Slack channel when pods are unhealthy
- Rollback and History: If a deployment causes issues, you can easily roll back to a previous Git commit or application version
We use ArgoCD heavily here at Vizalo and it has been flawless for us to provide reliable and consistent deployments.