infra/hosts/flora-6/apps/prometheus.nix

115 lines
3.2 KiB
Nix

{ config
, lib
, pkgs
, flake
, ...
}: {
age.secrets.nachtigall-metrics-prometheus-basic-auth-password = {
file = "${flake.self}/secrets/nachtigall-metrics-prometheus-basic-auth-password.age";
mode = "600";
owner = "prometheus";
};
services.prometheus = {
enable = true;
port = 9001;
exporters = {
node = {
enable = true;
enabledCollectors = [ "systemd" ];
port = 9002;
};
};
globalConfig = {
scrape_interval = "10s";
scrape_timeout = "9s";
};
scrapeConfigs = [
{
job_name = "node-exporter-http";
static_configs = [{
targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.node.port}" ];
labels = {
instance = "flora-6";
};
}];
}
{
job_name = "node-exporter-https";
scheme = "https";
metrics_path = "/metrics";
basic_auth = {
username = "hakkonaut";
password_file = "${config.age.secrets.nachtigall-metrics-prometheus-basic-auth-password.path}";
};
static_configs = [{
targets = [ "nachtigall.pub.solar" ];
labels = {
instance = "nachtigall";
};
}];
}
{
job_name = "matrix-synapse";
scheme = "https";
metrics_path = "/_synapse/metrics";
basic_auth = {
username = "hakkonaut";
password_file = "${config.age.secrets.nachtigall-metrics-prometheus-basic-auth-password.path}";
};
static_configs = [{
targets = [ "nachtigall.pub.solar" ];
labels = {
instance = "nachtigall";
};
}];
}
];
ruleFiles = [
(pkgs.writeText "prometheus-rules.yml" (builtins.toJSON {
groups = [{
name = "alerting-rules";
rules = import ./alert-rules.nix { inherit lib; };
}];
}))
];
alertmanagers = [{ static_configs = [{ targets = [ "localhost:9093" ]; }]; }];
alertmanager = {
enable = true;
# port = 9093; # Default
webExternalUrl = "https://alerts.pub.solar"; # TODO use a proper url?
# environmentFile = "${config.age.secrets.nachtigall-alertmanager-envfile.path}";
configuration = {
route = {
receiver = "all";
group_by = [ "instance" ];
group_wait = "30s";
group_interval = "2m";
repeat_interval = "24h";
};
receivers = [{
name = "all";
# Email config documentation: https://prometheus.io/docs/alerting/latest/configuration/#email_config
email_configs = [{
send_resolved = true;
to = "TODO";
from = "alerts@pub.solar";
smarthost = "TODO";
auth_username = "TODO";
auth_password_file = "${config.age.secrets.nachtigall-alertmanager-smtp-password.path}";
require_tls = true;
}];
# TODO:
# For matrix notifications, look into: https://github.com/pinpox/matrix-hook and add a webhook
# webhook_configs = [ { url = "http://127.0.0.1:11000/alert"; } ];
}];
};
};
};
}