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service/node-exporter: seperate from prometheus

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This commit is contained in:
Felix Buehler 2023-06-04 18:08:55 +02:00
parent 797261aad1
commit 21c5160a1d
3 changed files with 78 additions and 41 deletions
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1
modules/services/default.nix
View file

@ -24,6 +24,7 @@
./navidrome
./nextcloud
./nginx
./node-exporter
./octoprint
./paperless
./passworts

75
modules/services/node-exporter/default.nix Normal file
View file

@ -0,0 +1,75 @@
# monitoring system services
{ config, lib, pkgs, ... }:
let
cfg = config.my.services.node-exporter;
domain = config.networking.domain;
in
{
options.my.services.node-exporter = with lib; {
enable = mkEnableOption "Node-Exporter for monitoring";
};
config = lib.mkIf cfg.enable {
services.prometheus = {
exporters = {
node = {
enable = true;
enabledCollectors = [ "systemd" ];
port = 9100;
listenAddress = "127.0.0.1";
};
systemd = {
enable = true;
listenAddress = "127.0.0.1";
};
};
scrapeConfigs = [
{
job_name = "node";
static_configs = [{
targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.node.port}" ];
labels = {
instance = config.networking.hostName;
};
}];
}
{
job_name = "systemd";
static_configs = [{
targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.systemd.port}" ];
labels = {
instance = config.networking.hostName;
};
}];
}
];
};
services.grafana.provision = {
dashboards.settings.providers = [
{
name = "Node Exporter";
options.path = pkgs.grafana-dashboards.node-exporter;
disableDeletion = true;
}
{
name = "Systemd";
options.path = pkgs.grafana-dashboards.node-systemd;
disableDeletion = true;
}
];
};
my.services.prometheus.rules = {
disk_will_fill_in_4_hours = {
condition = "predict_linear(node_filesystem_free[1h], 4 * 3600) < 0";
time = "5m";
description = "Disk would fill up in 4 hours. Please check the disk space";
labels = {
severity = "page";
};
};
};
};
}

43
modules/services/prometheus/default.nix
View file

@ -85,19 +85,6 @@ in
inherit (cfg) retentionTime;
exporters = {
node = {
enable = true;
enabledCollectors = [ "systemd" ];
port = 9100;
listenAddress = "127.0.0.1";
};
systemd = {
enable = true;
listenAddress = "127.0.0.1";
};
};
globalConfig = {
scrape_interval = cfg.scrapeInterval;
};
@ -131,27 +118,11 @@ in
};
}];
}
{
job_name = "node";
static_configs = [{
targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.node.port}" ];
labels = {
instance = config.networking.hostName;
};
}];
}
{
job_name = "systemd";
static_configs = [{
targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.systemd.port}" ];
labels = {
instance = config.networking.hostName;
};
}];
}
];
};
my.services.node-exporter.enable = true;
services.grafana.provision = {
datasources.settings.datasources = [
{
@ -167,21 +138,11 @@ in
}
];
dashboards.settings.providers = [
{
name = "Node Exporter";
options.path = pkgs.grafana-dashboards.node-exporter;
disableDeletion = true;
}
{
name = "Prometheus";
options.path = pkgs.grafana-dashboards.prometheus;
disableDeletion = true;
}
{
name = "Systemd";
options.path = pkgs.grafana-dashboards.node-systemd;
disableDeletion = true;
}
];
};