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Like Prometheus, but for logs.
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loki/debug
History
Marco Pracucci f3370cf120
docs: fix Promtail / Loki capitalization (#1130) 		6 years ago
..
README.md docs: fix Promtail / Loki capitalization (#1130) 6 years ago
docker-compose.yaml Adding `make debug` support to build debug binaries and debug containers which wrap the binary with delve and allow for remote debugging 6 years ago

README.md

Debug images

To build debug images run

make debug

You can use the docker-compose.yaml in this directory to launch the debug versions of the image in docker

Promtail in kubernetes

If you want to debug Promtail in kubernetes, I have done so with the ksonnet setup:

ks init promtail
cd promtail
ks env add promtail
jb init
jb install github.com/grafana/loki/production/ksonnet/promtail
vi environments/promtail/main.jsonnet

Replace the contents with:

local promtail = import 'promtail/promtail.libsonnet';


promtail + {
  _images+:: {
    promtail: 'grafana/promtail-debug:latest',
  },
  _config+:: {
    namespace: 'default',

    promtail_config+: {
      external_labels+: {
        cluster: 'some_cluster_name',
      },
      scheme: 'https',
      hostname: 'hostname',
      username: 'username',
      password: 'password',
    },
  },
}

change the some_cluster_name to anything meaningful to help find your logs in Loki

also update the hostname, username, and password for your Loki instance.

Loki in kubernetes

Haven't tried this yet, it works from docker-compose so it should run in kubernetes just fine also.