Simon Gardling
a3a6700106
The custom disk-usage-collector shell script + minutely timer is replaced by prometheus-zfs-exporter (pdf/zfs_exporter, packaged in nixpkgs as services.prometheus.exporters.zfs). The exporter provides pool capacity metrics (allocated/free/size) natively. Partition metrics (/boot, /persistent, /nix) now use node_exporter's built-in filesystem collector (node_filesystem_*_bytes) which already runs and collects these metrics. Also fixes a latent race condition in serviceMountWithZpool: the -mounts service now orders after zfs-mount.service (which runs 'zfs mount -a'), not just after pool import. Without this, the mount check could run before datasets are actually mounted.
111 lines
2.8 KiB
Nix
111 lines
2.8 KiB
Nix
{
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service_configs,
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lib,
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...
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}:
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let
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textfileDir = "/var/lib/prometheus-node-exporter-textfiles";
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in
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{
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imports = [
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(lib.serviceMountWithZpool "prometheus" service_configs.zpool_ssds [
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"/var/lib/prometheus"
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])
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(lib.serviceFilePerms "prometheus" [
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"Z /var/lib/prometheus 0700 prometheus prometheus"
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])
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];
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services.prometheus = {
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enable = true;
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port = service_configs.ports.private.prometheus.port;
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listenAddress = "127.0.0.1";
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stateDir = "prometheus";
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retentionTime = "0d"; # 0 disables time-based retention (keep forever)
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exporters = {
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node = {
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enable = true;
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port = service_configs.ports.private.prometheus_node.port;
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listenAddress = "127.0.0.1";
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enabledCollectors = [
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"hwmon"
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"systemd"
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"textfile"
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];
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extraFlags = [
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"--collector.textfile.directory=${textfileDir}"
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];
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};
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apcupsd = {
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enable = true;
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port = service_configs.ports.private.prometheus_apcupsd.port;
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listenAddress = "127.0.0.1";
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apcupsdAddress = "127.0.0.1:3551";
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};
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zfs = {
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enable = true;
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port = service_configs.ports.private.prometheus_zfs.port;
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listenAddress = "127.0.0.1";
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};
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};
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scrapeConfigs = [
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{
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job_name = "prometheus";
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static_configs = [
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{ targets = [ "127.0.0.1:${toString service_configs.ports.private.prometheus.port}" ]; }
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];
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}
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{
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job_name = "node";
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static_configs = [
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{ targets = [ "127.0.0.1:${toString service_configs.ports.private.prometheus_node.port}" ]; }
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];
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}
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{
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job_name = "apcupsd";
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static_configs = [
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{ targets = [ "127.0.0.1:${toString service_configs.ports.private.prometheus_apcupsd.port}" ]; }
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];
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}
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{
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job_name = "llama-cpp";
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static_configs = [
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{ targets = [ "127.0.0.1:${toString service_configs.ports.private.llama_cpp.port}" ]; }
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];
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}
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{
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job_name = "jellyfin";
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static_configs = [
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{ targets = [ "127.0.0.1:${toString service_configs.ports.private.jellyfin_exporter.port}" ]; }
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];
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}
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{
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job_name = "qbittorrent";
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static_configs = [
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{ targets = [ "127.0.0.1:${toString service_configs.ports.private.qbittorrent_exporter.port}" ]; }
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];
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}
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{
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job_name = "igpu";
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static_configs = [
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{ targets = [ "127.0.0.1:${toString service_configs.ports.private.igpu_exporter.port}" ]; }
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];
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}
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{
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job_name = "zfs";
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static_configs = [
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{ targets = [ "127.0.0.1:${toString service_configs.ports.private.prometheus_zfs.port}" ]; }
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];
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}
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];
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};
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systemd.tmpfiles.rules = [
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"d ${textfileDir} 0755 root root -"
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];
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}
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