nixos-config/config/services/promtail.nix

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{ config, pkgs, lib, ... }:
let promtail_config = {
server = {
http_listen_port = 28183;
grpc_listen_port = 0;
};
positions = {
filename = "/tmp/positions.yaml";
};
client = {
url = "http://[fd0d:a262:1fa6:e621:b4e1:08ff:e658:6f49]:3100/loki/api/v1/push";
external_labels.host = config.networking.hostName;
};
scrapeConfigs = [
{
job_name = "journal";
journal = {
max_age = "12h";
labels.job = "systemd-journal";
};
relabel_configs = [
{
source_labels = [ "__journal__systemd_unit" ];
target_label = "unit";
}
];
}
];
};
in
{
systemd.services.promtail = {
description = "Promtail service for Loki";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
ExecStart = ''
${pkgs.grafana-loki}/bin/promtail --config.file ${lib.generators.toYAML ./promtrail.yaml}
'';
};
};
}