Audit Log

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NORA records registry operations in a structured audit log. Each entry is a JSON object written to a single line (JSONL format).

Configuration

Variable	Default	Description
`NORA_AUDIT_LOG`	`file`	Output mode: `file`, `stdout`, `both`, or `off`

[audit]
mode = "file"       # "file", "stdout", "both", "off"

Modes:

Mode	Behavior
`file`	Write to `{storage_path}/audit.jsonl`
`stdout`	Write to stderr (12-factor compatible, works with log aggregators)
`both`	Write to both file and stderr
`off`	Disable audit logging

Log format

Each line is a JSON object with these fields:

Field	Type	Description
`ts`	string	ISO 8601 timestamp (UTC)
`action`	string	`push`, `pull`, `delete`, `cache_hit`, `proxy_fetch`, `overwrite`, `retention-apply`
`actor`	string	Origin of the operation: `api` (HTTP request), `scheduler` (retention), or `cli`
`artifact`	string	Package name or image reference
`registry`	string	Registry type: `docker`, `npm`, `pypi`, `maven`, etc.
`detail`	string	Additional context (version, digest, size)

Example entries

{"ts":"2026-05-18T10:30:45.123Z","action":"push","actor":"api","artifact":"myapp","registry":"docker","detail":"sha256:abc123"}
{"ts":"2026-05-18T10:31:02.456Z","action":"pull","actor":"api","artifact":"lodash","registry":"npm","detail":"4.17.21"}
{"ts":"2026-05-18T10:32:15.789Z","action":"delete","actor":"api","artifact":"old-image:v1","registry":"docker","detail":"manifest"}
{"ts":"2026-05-18T10:33:00.001Z","action":"cache_hit","actor":"api","artifact":"","registry":"maven","detail":""}
{"ts":"2026-05-18T10:33:05.200Z","action":"proxy_fetch","actor":"api","artifact":"","registry":"npm","detail":""}
{"ts":"2026-05-18T10:34:10.500Z","action":"overwrite","actor":"api","artifact":"libs/config.yaml","registry":"raw","detail":""}

Action types:

Action	Description
`push`	Client uploaded a new artifact
`pull`	Client downloaded an artifact from local storage
`delete`	Client deleted an artifact
`cache_hit`	Request served from local cache without contacting upstream
`proxy_fetch`	Artifact fetched from an upstream registry
`overwrite`	Existing artifact replaced (Raw registry)
`retention-apply`	Artifact removed by retention policy

File location

When using file or both mode, the audit log is written to:

{NORA_STORAGE_PATH}/audit.jsonl

Default: data/audit.jsonl (relative to the working directory).

The file is created automatically. Parent directories are created if they do not exist.

Docker Compose example

services:
  nora:
    image: ghcr.io/getnora-io/nora:0.9
    environment:
      NORA_AUDIT_LOG: both
      NORA_STORAGE_PATH: /data
    volumes:
      - nora-data:/data

Then tail the log:

docker exec nora tail -f /data/audit.jsonl | jq .

Forwarding to a log aggregator

With stdout mode, audit entries go to stderr alongside regular logs. Use your container orchestrator’s log driver to forward them:

# Filter audit entries from container logs
docker logs nora 2>&1 | grep '"action":' | jq .

For dedicated file-based forwarding (Filebeat, Promtail, Vector):

filebeat.inputs:
  - type: log
    paths:
      - /data/audit.jsonl
    json.keys_under_root: true
    json.add_error_key: true

Querying the audit log

# All pushes today
grep '"action":"push"' /data/audit.jsonl | jq .

# All Docker operations by user "admin"
jq -c 'select(.registry == "docker" and .actor == "admin")' /data/audit.jsonl

# Count operations per registry
jq -r '.registry' /data/audit.jsonl | sort | uniq -c | sort -rn