Loki On VictoriaMetrics

This project experimentally supports the loki protocol on the VictoriaMetrics Cluster, and the performance may be better than original loki.

More discussion can be found at VictoriaMetrics#816

Supported

• LogQL, extends MetricsQL to support filter expressions and full PromQL & MetricsQL support for querying metrics.
• Major HTTP API
  • /loki/api/v1/query
  • /loki/api/v1/query_range
  • /loki/api/v1/label & /loki/api/v1/labels
  • /loki/api/v1/label/<name>/values
  • /loki/api/v1/tail (websocket)
  • /loki/api/v1/push
• Additional support for prometheus-style data writing via tcp, like loki{component="parser",level="WARN"} "app log line"

How to build & run

$ make all
$ bin/vmstorage
$ bin/vmselect -storageNode 127.0.0.1:8401
$ bin/vminsert -storageNode 127.0.0.1:8400 -importerListenAddr 127.0.0.1:2003

Set loki datasource endpoint as http://127.0.0.1:8481/select/0/, If you call it manually, the full URL is http://127.0.0.1:8481/select/0/loki/api/v1/query_range.

Test insert logs with tcp:

$ nc 127.0.0.1 2003
loki{component="parser",level="WARN"} "app log line"

If you want to call push api to insert data, use http://127.0.0.1:8480/insert/0/loki/api/v1/push.

For more details, please refer to VictoriaMetrics Cluster

Screenshot