cert-manager is an open-source certificate management tool specifically designed for Kubernetes. It automates the process of obtaining, renewing, and validating TLS certificates for applications running in your Kubernetes cluster. This helps ensure:

• Security: Enforces secure communication within your cluster and with external services.

• Automation: Eliminates manual certificate management tasks, saving time and effort.

• Simplified operations: Provides a central platform for managing certificates across your cluster.

Key Features:

• Supports various issuers: Integrates with popular certificate authorities (CAs) like Let's Encrypt, HashiCorp Vault, Venafi, and more.

• Automatic issuance and renewal: Automatically obtains and renews certificates based on configured policies.

• Validation webhook: Validates TLS connections to ensure certificate validity and trust.

• Issuer-specific extensions: Supports issuer-specific features and configurations.

• Integration with Kubernetes resources: Manages certificates as Kubernetes resources for declarative configuration.

Benefits of Using cert-manager:

• Improved security: Ensures applications use valid and trusted certificates for secure communication.

• Reduced operational overhead: Automates certificate management tasks, saving time and effort.

• Simplified workflow: Provides a central platform for managing certificates in your Kubernetes environment.

• Flexibility: Supports different issuers and certificate types to meet diverse needs.