Shared Secret

• Environmental Variable: SHARED_SECRET
• Config File Key: shared_secret
• Kubernetes: see bootstrap secrets
• Type: base64 encoded string
• Required (unless using shared_secret_file)

Shared Secret is the base64 encoded 256-bit key used to mutually authenticate requests between services. It's critical that secret keys are random, and stored safely. Use a key management system or /dev/urandom to generate a key. For example:

head -c32 /dev/urandom | base64