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|
{
config,
lib,
pkgs,
...
}:
with lib; let
cfg = config.nixfiles.modules.monitoring;
in {
options.nixfiles.modules.monitoring.enable = mkEnableOption ''
a custom monitoring stack bas on the Grafana Labs toolkit
'';
config = mkIf cfg.enable {
nixfiles.modules = {
grafana.enable = true;
loki.enable = true;
prometheus.enable = true;
alertmanager.enable = true;
};
services = {
grafana.provision = {
enable = true;
# https://grafana.com/docs/grafana/latest/administration/provisioning/#data-sources
datasources.settings.datasources = with config.nixfiles.modules; [
{
name = "Prometheus";
type = "prometheus";
access = "proxy";
url = "https://${prometheus.domain}";
isDefault = true;
}
{
name = "Loki";
type = "loki";
access = "proxy";
url = "https://${loki.domain}";
}
];
# https://grafana.com/docs/grafana/latest/administration/provisioning/#dashboards
dashboards.settings.providers = [
# System dashboard is imported manually from here[1]. Too bad
# provisioned dashboards cannot properly integrate dynamic datasources
# yet.
#
# [1]: https://grafana.com/grafana/dashboards/1860-node-exporter-full
{
name = "endlessh";
options.path = ./dashboards/endlessh.json;
}
{
name = "unbound";
options.path = ./dashboards/unbound.json;
}
{
name = "nginx";
options.path = ./dashboards/nginx.json;
}
{
name = "postgersql";
options.path = ./dashboards/postgresql.json;
}
];
};
loki.configuration.ruler.alertmanager_url = "https://${config.nixfiles.modules.alertmanager.domain}";
prometheus = {
# It would be nice if these could be generated dynamically. That would
# require a complete rework of how configurations are defined, though.
scrapeConfigs = let
mkTargets = hosts: port: map (host: "${host.hostname}:${toString port}") hosts;
in
with my.configurations;
with config.services.prometheus.exporters; [
{
job_name = "endlessh-go";
static_configs = [
{
targets =
mkTargets
[
manwe
varda
yavanna
]
config.services.endlessh-go.prometheus.port;
}
];
}
{
job_name = "nginx";
static_configs = [
{
targets =
mkTargets
[
manwe
varda
yavanna
]
nginx.port;
}
];
}
{
job_name = "node";
static_configs = [
{
targets =
mkTargets
[
manwe
varda
yavanna
]
node.port;
}
];
}
{
job_name = "postgres";
static_configs = [
{
targets =
mkTargets
[
manwe
]
postgres.port;
}
];
}
{
job_name = "unbound";
static_configs = [
{
targets =
mkTargets
[
manwe
]
unbound.port;
}
];
}
{
job_name = "wireguard";
static_configs = [
{
targets =
mkTargets
[
manwe
]
wireguard.port;
}
];
}
];
alertmanagers = [
{
scheme = "https";
static_configs = [
{targets = [config.nixfiles.modules.alertmanager.domain];}
];
}
];
};
};
};
}
|
