wolf.r: init shack/prometheus config
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makefu
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@ -40,11 +40,16 @@ in
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<stockholm/krebs/2configs/shack/radioactive.nix>
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## Collect local statistics via collectd and send to collectd
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<stockholm/krebs/2configs/stats/wolf-client.nix>
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## write collectd statistics to wolf.shack
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<stockholm/krebs/2configs/collectd-base.nix>
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{ services.influxdb.enable = true; }
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<stockholm/krebs/2configs/shack/netbox.nix>
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<stockholm/krebs/2configs/shack/prometheus/server.nix>
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<stockholm/krebs/2configs/shack/prometheus/node.nix>
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<stockholm/krebs/2configs/shack/prometheus/unifi.nix>
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<stockholm/krebs/2configs/collectd-base.nix> # home-assistant
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{ services.influxdb.enable = true; }
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];
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# use your own binary cache, fallback use cache.nixos.org (which is used by
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# apt-cacher-ng in first place)
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27
krebs/2configs/shack/prometheus/node.nix
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27
krebs/2configs/shack/prometheus/node.nix
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@ -0,0 +1,27 @@
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{ config, lib, pkgs, ... }:
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{
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networking.firewall.allowedTCPPorts = [ 9100 ];
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services.prometheus.exporters.node = {
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enable = true;
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enabledCollectors = [
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"conntrack"
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"diskstats"
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"entropy"
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"filefd"
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"filesystem"
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"loadavg"
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"mdadm"
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"meminfo"
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"netdev"
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"netstat"
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"stat"
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"time"
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"vmstat"
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"systemd"
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"logind"
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"interrupts"
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"ksmd"
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];
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};
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}
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195
krebs/2configs/shack/prometheus/server.nix
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195
krebs/2configs/shack/prometheus/server.nix
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@ -0,0 +1,195 @@
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{ pkgs, lib, config, ... }:
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# from https://gist.github.com/globin/02496fd10a96a36f092a8e7ea0e6c7dd
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{
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networking = {
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firewall.allowedTCPPorts = [
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3000 # grafana
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9090 # prometheus
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9093 # alertmanager
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];
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useDHCP = true;
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};
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services = {
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prometheus = {
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enable = true;
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extraFlags = [
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"-storage.local.retention 8760h"
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"-storage.local.series-file-shrink-ratio 0.3"
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"-storage.local.memory-chunks 2097152"
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"-storage.local.max-chunks-to-persist 1048576"
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"-storage.local.index-cache-size.fingerprint-to-metric 2097152"
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"-storage.local.index-cache-size.fingerprint-to-timerange 1048576"
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"-storage.local.index-cache-size.label-name-to-label-values 2097152"
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"-storage.local.index-cache-size.label-pair-to-fingerprints 41943040"
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];
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alertmanagerURL = [ "http://localhost:9093" ];
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rules = [
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''
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ALERT node_down
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IF up == 0
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FOR 5m
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LABELS {
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severity="page"
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}
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ANNOTATIONS {
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summary = "{{$labels.alias}}: Node is down.",
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description = "{{$labels.alias}} has been down for more than 5 minutes."
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}
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ALERT node_systemd_service_failed
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IF node_systemd_unit_state{state="failed"} == 1
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FOR 4m
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LABELS {
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severity="page"
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}
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ANNOTATIONS {
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summary = "{{$labels.alias}}: Service {{$labels.name}} failed to start.",
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description = "{{$labels.alias}} failed to (re)start service {{$labels.name}}."
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}
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ALERT node_filesystem_full_90percent
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IF sort(node_filesystem_free{device!="ramfs"} < node_filesystem_size{device!="ramfs"} * 0.1) / 1024^3
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FOR 5m
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LABELS {
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severity="page"
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}
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ANNOTATIONS {
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summary = "{{$labels.alias}}: Filesystem is running out of space soon.",
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description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} got less than 10% space left on its filesystem."
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}
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ALERT node_filesystem_full_in_4h
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IF predict_linear(node_filesystem_free{device!="ramfs"}[1h], 4*3600) <= 0
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FOR 5m
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LABELS {
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severity="page"
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}
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ANNOTATIONS {
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summary = "{{$labels.alias}}: Filesystem is running out of space in 4 hours.",
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description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} is running out of space of in approx. 4 hours"
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}
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ALERT node_filedescriptors_full_in_3h
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IF predict_linear(node_filefd_allocated[1h], 3*3600) >= node_filefd_maximum
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FOR 20m
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LABELS {
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severity="page"
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}
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ANNOTATIONS {
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summary = "{{$labels.alias}} is running out of available file descriptors in 3 hours.",
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description = "{{$labels.alias}} is running out of available file descriptors in approx. 3 hours"
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}
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ALERT node_load1_90percent
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IF node_load1 / on(alias) count(node_cpu{mode="system"}) by (alias) >= 0.9
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FOR 1h
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LABELS {
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severity="page"
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}
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ANNOTATIONS {
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summary = "{{$labels.alias}}: Running on high load.",
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description = "{{$labels.alias}} is running with > 90% total load for at least 1h."
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}
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ALERT node_cpu_util_90percent
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IF 100 - (avg by (alias) (irate(node_cpu{mode="idle"}[5m])) * 100) >= 90
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FOR 1h
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LABELS {
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severity="page"
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}
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ANNOTATIONS {
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summary = "{{$labels.alias}}: High CPU utilization.",
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description = "{{$labels.alias}} has total CPU utilization over 90% for at least 1h."
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}
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ALERT node_ram_using_90percent
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IF node_memory_MemFree + node_memory_Buffers + node_memory_Cached < node_memory_MemTotal * 0.1
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FOR 30m
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LABELS {
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severity="page"
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}
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ANNOTATIONS {
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summary="{{$labels.alias}}: Using lots of RAM.",
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description="{{$labels.alias}} is using at least 90% of its RAM for at least 30 minutes now.",
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}
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''
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];
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scrapeConfigs = [
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{
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job_name = "node";
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scrape_interval = "10s";
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static_configs = [
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{
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targets = [
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"localhost:9100"
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];
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labels = {
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alias = "wolf.shack";
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};
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}
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{
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targets = [
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"localhost:9130"
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];
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labels = {
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alias = "unifi.shack";
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};
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}
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{
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targets = [
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"10.42.22.184:9100" # puyak.shack
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];
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labels = {
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alias = "puyak.shack";
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};
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}
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{
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targets = [
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"phenylbutazon.shack:9100"
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];
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labels = {
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alias = "phenylbutazon.shack";
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};
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}
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{
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targets = [
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"ibuprofen.shack:9100"
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];
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labels = {
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alias = "ibuprofen.shack";
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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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listenAddress = "0.0.0.0";
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configuration = {
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"global" = {
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"smtp_smarthost" = "smtp.example.com:587";
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"smtp_from" = "alertmanager@example.com";
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};
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"route" = {
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"group_by" = [ "alertname" "alias" ];
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"group_wait" = "30s";
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"group_interval" = "2m";
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"repeat_interval" = "4h";
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"receiver" = "team-admins";
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};
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"receivers" = [
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{
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"name" = "team-admins";
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"email_configs" = [
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{
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"to" = "devnull@example.com";
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"send_resolved" = true;
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}
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];
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"webhook_configs" = [
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{
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"url" = "https://example.com/prometheus-alerts";
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"send_resolved" = true;
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}
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];
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}
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];
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};
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};
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};
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};
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}
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10
krebs/2configs/shack/prometheus/unifi.nix
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10
krebs/2configs/shack/prometheus/unifi.nix
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@ -0,0 +1,10 @@
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{lib, ... }:
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{
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services.prometheus.exporters.unifi = {
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enable = true;
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unifiAddress = "https://unifi.shack:8443/";
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unifiInsecure = true;
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unifiUsername = "prometheus"; # needed manual login after setup to confirm the password
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unifiPassword = lib.replaceChars ["\n"] [""] (builtins.readFile <secrets/shack/unifi-prometheus-pw>);
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};
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}
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