Random Notes

Updated Jun 18, 2026 1 min read

Random notes generate cryptographically secure random values. They are designed for one use case: generating secrets that should be created once and never changed.

Reference

Note	Description
`randomAlphanumeric`	Generate a cryptographically random alphanumeric string of exactly `n` characters.
`randomHex`	Generate `n` random bytes and return them as a hex-encoded string.
`randomBase64`	Generate `n` random bytes and return them as a URL-safe base64 string.

Examples

# randomAlphanumeric
# value: "{{ randomAlphanumeric 32 }}"
# → "k7Xm3pQs9vR2nTwY8cL1jF6bH0dE4gA5"

# randomHex
# value: "{{ randomHex 16 }}"
# 16 bytes → 32 hex chars
# → "a3f8b2c1d4e5f6a7b8c9d0e1f2a3b4c5"

# randomBase64
# value: "{{ randomBase64 32 }}"
# 32 bytes → ~43 base64 chars
# → "k7Xm3pQs9vR2nTwY8cL1jF6bH0dE4gA5zP..."
secrets:
  - name: "{{ .metadata.name }}-api-key"
    once: true
    rotateAfter: "90d"
    data:
      apiKey: "{{ randomHex 32 }}"