leventebalogh / playground-nodejs-loki-grafana Goto Github PK
View Code? Open in Web Editor NEWA simple playground for sending logs easily into Loki from Node.js without the need for Promtail.
A simple playground for sending logs easily into Loki from Node.js without the need for Promtail.
I was struggling understanding how the example was not working and found out that there is an active issue about loki-winston that won't allow you to see logs in grafana: JaniAnttonen/winston-loki#90 (comment)
Basically, winston returns the timestamp as a string by default, while loki expects a Date
instance.
To solve this, you need to provide replaceTimestamp
and set it to true
(here: https://github.com/leventebalogh/playground-nodejs-loki-grafana/blob/master/server.js#L16) in the LokiTransport
opts, otherwise you won't be able to see any log in grafana.
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