Promtail is an agent which ships the contents of local logs to a private Loki instance or Grafana Cloud. It is usually deployed to every machine that has applications needed to be monitored. It primarily: Discovers targets Attaches labels to log streams Pushes them to the Loki instance. Currently, Promtail can tail logs from two sources: local log files and the systemd journal (on AMD64 machines only). Promtail supports receiving IETF Syslog (RFC5424) messages from a tcp stream: (https://github.com/grafana/loki/blob/v1.5.0/docs/clients/promtail/scraping.md#syslog-receiver) NOTE: Download the config.yml file from https://github.com/natcoso9955/unRAID-docker/blob/master/configs/promtail/config.yml before you start the container. Will need to be placed into your Host Path 1. More info: https://github.com/grafana/loki/blob/master/docs/clients/promtail/configuration.md