infra/services/monitoring/exporters/nginx.nix
emilylange 8d2a367e92 grafana-agent: make bagel.monitoring.grafana-agent.exporters an attrset
This allows us to use multiple jobs, one for each additional exporter,
and set their `job_name` accordingly.

`job_name` is exported as `job` label on the resulting metrics.
This allows us to quickly get an understanding what metrics of an
exporter are actually available by simply filtering all metrics by
`{job="$jobname"}`
2024-07-08 09:34:26 +03:00

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Nix

{
config,
lib,
...
}:
let
cfg = config.bagel.monitoring.exporters.nginx;
inherit (lib) mkEnableOption mkIf;
logFormat = ''$remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent" rt=$request_time uct="$upstream_connect_time" uht="$upstream_header_time" urt="$upstream_response_time"'';
in
{
options.bagel.monitoring.exporters.nginx.enable = (mkEnableOption "Nginx access.log exporter") // { default = config.services.nginx.enable; };
config = mkIf cfg.enable {
services.nginx.appendHttpConfig = ''
log_format ours '${logFormat}';
access_log /var/log/nginx/access.log ours;
'';
services.prometheus.exporters.nginxlog = {
enable = true;
port = 9103;
group = "nginx";
settings.namespaces = [
{
name = "nginx";
format = logFormat;
source.files = ["/var/log/nginx/access.log"];
}
];
};
bagel.monitoring.grafana-agent.exporters.nginxlog.port = 9103;
};
}