konnosDashboard
config.yaml73 lines · main
1# Promtail — file-based docker log discovery.
2#
3# Per DOCKER.md §1 we DO NOT touch the Docker daemon for log discovery
4# or tailing. No docker_sd_configs, no docker.sock mount. Instead we
5# read the json-file driver's output directly from
6# /var/lib/docker/containers/*/*-json.log — same data, zero daemon load.
7#
8# Filtering to "only briven containers" can't be done off the container
9# label (that would require asking the daemon). Instead we filter by
10# the JSON `service` label that briven services emit on every log line
11# via @briven/shared/observability. Non-briven containers don't produce
12# that JSON shape, so their lines flow through with `service` absent and
13# Loki queries naturally exclude them via the standard
14# `{service=~"api|runtime|realtime|web|docs"}` selector.
15
16server:
17 http_listen_port: 9080
18 grpc_listen_port: 0
19
20positions:
21 filename: /tmp/positions.yaml
22
23clients:
24 - url: http://briven-loki:3100/loki/api/v1/push
25
26scrape_configs:
27 - job_name: docker-files
28 # Static targets + __path__ glob is the Promtail idiom for file-based
29 # discovery. No daemon involvement; Promtail tails the json files
30 # directly via inotify on the host bind-mount.
31 static_configs:
32 - targets:
33 - localhost
34 labels:
35 job: docker
36 __path__: /var/lib/docker/containers/*/*-json.log
37 pipeline_stages:
38 # Each line in *-json.log is wrapped by the docker json-file
39 # driver as: {"log":"<raw stdout line>\n","stream":"stdout","time":"..."}.
40 # First parse unwraps the docker envelope.
41 - json:
42 expressions:
43 output: log
44 stream: stream
45 time: time
46 - timestamp:
47 source: time
48 format: RFC3339Nano
49 - output:
50 source: output
51 - labels:
52 stream:
53 # Extract the container id from the file path so an operator can
54 # at least correlate a line back to a specific container without
55 # asking the daemon.
56 - regex:
57 source: filename
58 expression: '/var/lib/docker/containers/(?P<container_id>[a-f0-9]{12})'
59 - labels:
60 container_id:
61 # Now the wrapped `output` field holds the application's raw stdout.
62 # For briven services that's our @briven/shared/observability JSON
63 # shape; parse it to lift level/msg/service/env into labels.
64 - json:
65 expressions:
66 level: level
67 msg: msg
68 service: service
69 env: env
70 - labels:
71 level:
72 service:
73 env: