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🟨 Grafana Loki

This is a logging system using:

  • Grafana: Visualisation
  • Loki: Service to collect logs
  • Alloy: Runs on clients to collect logs from

Setting up Grafana + Loki​

Followed this guide: https://grafana.com/docs/loki/latest/setup/install/docker/#install-with-docker-on-linux

Alloy​

Setting up Alloy on client​

✨ Scripted ⭐​

Run this on Debian-based systems:

wget -qO- https://lab.samjwright.com/alloy-install.sh | bash -s <insert_journal_name>

Manual​

Basically follow the steps here: https://grafana.com/docs/alloy/latest/set-up/install/linux/

  1. Run commands at the top of this file: https://apt.grafana.com/ to add Grafana apt repository
  2. apt-get update to get new sources
  3. sudo systemctl start alloy && sudo systemctl enable alloy.service to start and permanently run Alloy
  4. nano /etc/default/alloy to add --server.http.listen-addr=0.0.0.0:12345 in the CUSTOM_ARGS environment variable to be able to access Alloy web UI on any machine
  5. Follow guide to Use Grafana Alloy to send logs.
    1. nano /etc/alloy/config.alloy
    2. Replace the file with the following code:
logging {
  level = "warn"
}

livedebugging {
  enabled = true
}

loki.source.journal "pve2" {
  forward_to = [loki.write.grafana_loki.receiver]
}


loki.write "grafana_loki" {
  endpoint {
    url = "http://192.168.86.226:3100/loki/api/v1/push"
  }
}