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Update the docker-driver doc about default labels #3814

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Jun 7, 2021
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Update the docker-driver doc about default labels #3814

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Update the docker-driver doc about default labels
kavirajk Jun 7, 2021
43fb938
Update docs/sources/clients/docker-driver/configuration.md
kavirajk Jun 7, 2021
51ef4b2
Make it clear when to use pipeline_stages vs relabelling on docker-dr…
kavirajk Jun 7, 2021
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3 changes: 2 additions & 1 deletion docs/sources/clients/docker-driver/configuration.md
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Expand Up @@ -109,13 +109,14 @@ By default, the Docker driver will add the following labels to each log line:

- `filename`: where the log is written to on disk
- `host`: the hostname where the log has been generated
- `container_name`: the name of the container generating logs
- `swarm_stack`, `swarm_service`: added when deploying from Docker Swarm.

Custom labels can be added using the `loki-external-labels`, `loki-pipeline-stages`,
`loki-pipeline-stage-file`, `labels`, `env`, and `env-regex` options. See the
next section for all supported options.

If no `loki-external-labels` are provided, label `container_name` will be added to each log line by default.
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## Pipeline stages

While you can provide `loki-pipeline-stage-file` it can be hard to mount the configuration file to the driver root filesystem.
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