Debugging TLS failures in distroless containers
9 days ago
- #Docker
- #Security
- #TLS
- TLS-related incident occurred due to client not trusting the server's CA root certificate.
- TLS basics: encryption protocol for secure client-server communication, using public key cryptography.
- TLS handshake verifies server's certificate and establishes encryption.
- Issue troubleshooting involved checking server's certificate chain and verifying Root CA trust.
- Used OpenSSL commands to test connectivity and inspect certificates.
- Identified missing Root CA in Docker distroless image's ca-certificates file.
- Solution: Added missing Root CA to ca-certificates file in Docker image.
- Tested solution using Docker multi-stage builds to verify connectivity.