nixos/tests/loki.nix

   1 import ./make-test-python.nix ({ lib, pkgs, ... }:
   2
   3 {
   4   name = "loki";
   5
   6   meta = with lib.maintainers; {
   7     maintainers = [ willibutz ];
   8   };
   9
  10   nodes.machine = { ... }: {
  11     services.loki = {
  12       enable = true;
  13       configFile = "${pkgs.grafana-loki.src}/cmd/loki/loki-local-config.yaml";
  14     };
  15     services.promtail = {
  16       enable = true;
  17       configuration = {
  18         server = {
  19           http_listen_port = 9080;
  20           grpc_listen_port = 0;
  21         };
  22         clients = [ { url = "http://localhost:3100/loki/api/v1/push"; } ];
  23         scrape_configs = [
  24           {
  25             job_name = "system";
  26             static_configs = [
  27               {
  28                 targets = [ "localhost" ];
  29                 labels = {
  30                   job = "varlogs";
  31                   __path__ = "/var/log/*log";
  32                 };
  33               }
  34             ];
  35           }
  36         ];
  37       };
  38     };
  39   };
  40
  41   testScript = ''
  42     machine.start
  43     machine.wait_for_unit("loki.service")
  44     machine.wait_for_unit("promtail.service")
  45     machine.wait_for_open_port(3100)
  46     machine.wait_for_open_port(9080)
  47     machine.succeed("echo 'Loki Ingestion Test' > /var/log/testlog")
  48     # should not have access to journal unless specified
  49     machine.fail(
  50         "systemctl show --property=SupplementaryGroups promtail | grep -q systemd-journal"
  51     )
  52     machine.wait_until_succeeds(
  53         "${pkgs.grafana-loki}/bin/logcli --addr='http://localhost:3100' query --no-labels '{job=\"varlogs\",filename=\"/var/log/testlog\"}' | grep -q 'Loki Ingestion Test'"
  54     )
  55   '';
  56 })