Documentation Index

Overview

• General Architecture
• Gardener landing page gardener.cloud
• "Gardener, the Kubernetes Botanist" blog on kubernetes.io

Concepts

• Gardener API server
• Gardener Scheduler
• Gardenlet
• Gardener Seed Admission Controller

Usage

• Audit a Kubernetes cluster
• Cluster purposes
• Custom CoreDNS configuration
• Trusted TLS certificate for shoot control planes
• Gardener configuration and usage
• OpenIDConnect presets
• Supported Kubernetes versions
• Trigger shoot operations
• Troubleshooting guide

Proposals

• GEP-1: Gardener extensibility and extraction of cloud-specific/OS-specific knowledge
• GEP-2: BackupInfrastructure CRD and Controller Redesign
• GEP-3: Network extensibility
• GEP-4: New core.gardener.cloud/v1alpha1 APIs required to extract cloud-specific/OS-specific knowledge out of Gardener core
• GEP-5: Gardener Versioning Policy
• GEP-6: Integrating etcd-druid with Gardener
• GEP-7: Shoot Control Plane Migration
• GEP-8: SNI Passthrough proxy for kube-apiservers
• GEP-9: Gardener integration test framework
• GEP-10: Support additional container runtimes

Development

• Setting up a local development environment
• Unit Testing and Dependency Management
• Features, Releases and Hotfixes
• Adding New Cloud Providers
• Extending the Monitoring Stack
• How to create log parser for container into fluent-bit

Extensions

• Extensibility overview
• Extension controller registration
• Cluster resource
• Extension points
  • General conventions
  • Trigger for reconcile operations
  • Deploy resources into the shoot cluster
  • Shoot resource customization webhooks
  • Logging and Monitoring configuration
  • Contributing to shoot health status conditions
    • Health Check Library
  • Blob storage providers
    • BackupBucket resource
    • BackupEntry resource
  • DNS providers
    • DNSProvider and DNSEntry resources
  • IaaS/Cloud providers
    • Control plane customization webhooks
    • ControlPlane resource
    • ControlPlane exposure resource
    • Infrastructure resource
    • Worker resource
  • Network plugin providers
    • Network resource
  • Operating systems
    • OperatingSystemConfig resource
  • Container runtimes
    • ContainerRuntime resource
  • Generic (non-essential) extensions
    • Extension resource
• Extending project roles

Testing

• Integration Testing Manual

Deployment

• Deploying the Gardener into a Kubernetes cluster
• Deploying the Gardener and a Seed into an AKS cluster
• Overwrite image vector
• Migration from Gardener v0 to v1

Monitoring

• Alerting
• User Alerts
• Operator Alerts