226 lines
6.7 KiB
Nix
226 lines
6.7 KiB
Nix
{ config, pkgs, ... }: {
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imports = [
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./hardware.nix
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./networking.nix # generated at runtime by nixos-infect
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];
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age.secrets.healthchecks-secret = {
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file = ../../secrets/monitoring-healthchecks-secret.age;
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owner = "healthchecks";
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};
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age.secrets.healthchecks-smtp = {
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file = ../../secrets/fastmail-smtp.age;
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owner = "healthchecks";
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};
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age.secrets.prometheus-webconfig-secret = {
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file = ../../secrets/monitoring-prometheus-webconfig.age;
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owner = "prometheus";
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mode = "775";
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};
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age.secrets.prometheus-password-secret = {
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file = ../../secrets/monitoring-prometheus-password.age;
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owner = "prometheus";
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};
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boot.tmp.cleanOnBoot = true;
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zramSwap.enable = true;
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networking.hostName = "monitoring";
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networking.domain = "";
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services.openssh.enable = true;
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users.users.root.openssh.authorizedKeys.keys = [
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''ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBDjEgtIWPA5Ncs/KOcMeT6Q/HACJJetDOLjMvXXwUE+08oTX1EpHrWPpy8J+UHKIyErCNPYq8dgtrbhnMRlxHqI=''
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];
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networking.firewall.enable = false;
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services.grafana = {
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enable = true;
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settings.server = {
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domain = "grafana.gmem.ca";
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http_port = 2342;
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http_addr = "127.0.0.1";
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};
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};
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services.alertmanager-ntfy = {
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enable = true;
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settings = {
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http = {
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addr = "127.0.0.1:8111";
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};
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ntfy = {
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baseurl = "https://ntfy.gmem.ca";
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notification = {
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topic = "alerts";
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priority = ''
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status == "firing" ? "high" : "default"
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'';
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templates = {
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title = ''{{ if eq .Status "resolved" }}Resolved: {{ end }}{{ index .Annotations "summary" }}'';
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description = ''{{ index .Annotations "description" }}'';
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click = ''http://grafana.gmem.ca/d/{{ index .Annotations "dashboard" }}'';
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};
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};
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};
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};
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};
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services.prometheus = {
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enable = true;
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webConfigFile = config.age.secrets.prometheus-webconfig-secret.path;
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globalConfig = {
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scrape_interval = "15s";
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};
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alertmanagers = [ {
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basic_auth = {
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username = "homelab";
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password_file = config.age.secrets.prometheus-password-secret.path;
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};
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static_configs = [ {
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targets = [
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"localhost:9093"
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];
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} ];
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} ];
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rules = [(builtins.toJSON {
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groups = [{
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name = "healthchecks";
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rules = [
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{
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alert = "HealthcheckFailedCheckin";
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expr = ''hc_check_up < 1'';
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for = "5m";
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labels.severity = "page";
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annotations = {
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summary = "{{ $labels.name }} healthcheck failed";
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description = "The {{ $labels.name }} healthcheck failed to check in.";
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dashboard = "f594ea85-45f2-4019-b988-2d17638b5cf3";
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};
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}
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];
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}];
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})];
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alertmanager = {
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enable = true;
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extraFlags = [ "--web.config.file=${config.age.secrets.prometheus-webconfig-secret.path}" ];
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webExternalUrl = "https://alerts.gmem.ca";
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configText = ''
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global: {}
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# The directory from which notification templates are read.
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templates:
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- '/etc/alertmanager/template/*.tmpl'
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# The root route on which each incoming alert enters.
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route:
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group_by: ['alertname', 'cluster', 'service']
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group_wait: 0s
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group_interval: 5m
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repeat_interval: 3h
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# A default receiver
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receiver: ntfy
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receivers:
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- name: ntfy
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webhook_configs:
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- url: http://localhost:8111/hook
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'';
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};
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port = 9001;
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extraFlags = [ "--web.enable-remote-write-receiver" ];
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scrapeConfigs = [
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{
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job_name = "personal_hardware";
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static_configs = [ { targets = [ "london:9100" "vancouver:9100" "localhost:9100" ]; } ];
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}
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{
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job_name = "speedtest-exporter";
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scrape_interval = "1h";
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scrape_timeout = "1m";
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static_configs = [ { targets = [ "vancouver:9798" ]; } ];
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}
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{
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job_name = "syncthing";
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static_configs = [ { targets = [ "vancouver:8384" "london:8384" ]; } ];
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}
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{
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job_name = "forgejo";
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static_configs = [ { targets = [ "git.gmem.ca" ]; } ];
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}
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{
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job_name = "coredns";
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static_configs = [ { targets = [ "vancouver:9253" ]; } ];
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}
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{
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job_name = "healthchecks";
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scrape_interval = "60s";
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metrics_path = "/projects/5f1de50f-a52d-4215-961f-aae7cc6cf6c9/metrics/TbMoU7SUdknzMe-H5Q4HzmKl3itOIrJk";
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static_configs = [ { targets = [ "localhost:8000" ]; } ];
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}
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{
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job_name = "blackbox";
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metrics_path = "/probe";
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params = { "modules" = [ "http_2xx" ]; };
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static_configs = [ { targets = [ "google.com" "gabrielsimmer.com" "artbybecki.com" ]; } ];
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relabel_configs = [
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{ source_labels = ["__address__"]; target_label = "__param_target"; }
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{ source_labels = ["__param_target"]; target_label = "instance"; }
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{ source_labels = []; target_label = "__address__"; replacement = "vancouver:9115"; } ];
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}
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];
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exporters.node = {
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enable = true;
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listenAddress = "127.0.0.1";
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enabledCollectors = [
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"systemd" "processes"
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];
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};
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};
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services.tailscale.enable = true;
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services.healthchecks = {
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enable = true;
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settings = {
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SECRET_KEY_FILE = config.age.secrets.healthchecks-secret.path;
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SITE_ROOT = "https://healthchecks.gmem.ca";
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SITE_NAME = "Arch's Healthchecks";
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EMAIL_HOST = "smtp.fastmail.com";
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EMAIL_HOST_PASSWORD_FILE = config.age.secrets.healthchecks-smtp.path;
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EMAIL_HOST_USER = "g@gmem.ca";
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DEFAULT_FROM_EMAIL = "healthchecks@gmem.ca";
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};
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};
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# nginx reverse proxy
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services.nginx = {
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enable = true;
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recommendedGzipSettings = true;
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recommendedBrotliSettings = true;
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recommendedZstdSettings = true;
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recommendedOptimisation = true;
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recommendedTlsSettings = true;
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recommendedProxySettings = true;
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virtualHosts.${config.services.grafana.settings.server.domain} = {
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default = true;
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enableACME = true;
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forceSSL = true;
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locations."/" = {
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proxyPass = "http://127.0.0.1:${toString config.services.grafana.settings.server.http_port}";
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proxyWebsockets = true;
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};
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};
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virtualHosts."healthchecks.gmem.ca" = {
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enableACME = true;
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forceSSL = true;
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locations."/" = {
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proxyPass = "http://127.0.0.1:8000";
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proxyWebsockets = true;
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};
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};
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};
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security.acme.acceptTerms = true;
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security.acme.defaults.email = "acme@gmem.ca";
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system.stateVersion = "23.11";
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}
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