This is a Simple logger to demo the use of Promtail as a sidecar to send logs to Loki

Prerequisites

This docs assume:

• you have loki and grafana already deployed. Please refered to official documentation for installation
• The logfile you want to scrape is in JSON format

This Helm chart deploy a application pod with 2 containers: - a Golang app writing logs in a separate file. - a Promtail that read that log file and send it to loki.

The file path can be updated via the ./helm/values.yaml file.

sidecar.labels is a map where you can add the labels that will be added to your log entry in Loki.

Example:

• Logfile located at /home/slog/creator.log
• Adding labels
  • job: promtail-sidecar
  • test: golang

sidecar:
  logfile:
    path: /home/slog
    filename: creator.log
  labels:
    job: promtail-sidecar
    test: golang