root
792217f640
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buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-linode Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-jeremiah Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-zeke Build done.
buildbot/nix-build gitea:greg/nixos#checks.x86_64-linux.nixos-hosea Build done.
buildbot/nix-build Build done.
Introduces a greg.nebula NixOS module and enables it across all managed
hosts for the nebula.thehellings.com overlay (CIDR: 10.157.0.0/16).
Architecture:
- linode: lighthouse + relay (public internet, UDP 4242)
- genesis: regular node + unsafe_routes router for 10.42.0.0/16 (home LAN)
- hosea, isaiah, jeremiah, zeke, exodus: regular nodes with unsafe_routes
pointing to genesis to reach the home LAN
Changes:
- modules/nixos/nebula.nix: new greg.nebula module
- isLighthouse / isRelay options
- unsafeRoutes option (tun.unsafe_routes)
- routesSubnet option: enables IP forwarding + nftables masquerade NAT
on the gateway host (genesis) so Nebula peers reach 10.42.0.0/16
- agenix secret reference per-host (secrets/nebula/<name>.key.age)
- opens UDP/4242 in the firewall
- modules/nixos/default.nix: import nebula.nix
- hosts/unstable/linode/default.nix: greg.nebula.isLighthouse = true
- hosts/unstable/genesis/default.nix: greg.nebula.routesSubnet = "10.42.0.0/16"
- hosts/unstable/{hosea,isaiah,jeremiah,zeke,exodus}/default.nix:
greg.nebula.enable = true with unsafeRoutes via genesis
- network.json: add nebulaIp field for each managed host
- secrets/secrets.nix: declare nebula/<host>.key.age entries
- secrets/nebula/README.md: full PKI bootstrap guide (CA, certs, agenix)
548 lines
20 KiB
Nix
548 lines
20 KiB
Nix
# Edit this configuration file to define what should be installed on
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# your system. Help is available in the configuration.nix(5) man page
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# and in the NixOS manual (accessible by running ‘nixos-help’).
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{
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config,
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metadata,
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pkgs,
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...
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}:
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let
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wanInterface = "enp2s0";
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lanInterface = "enp1s0";
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lanIpAddress = metadata.hosts.${config.networking.hostName}.ip;
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in
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{
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imports = [
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# Include the results of the hardware scan.
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./arr.nix
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./hardware-configuration.nix
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];
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age.secrets.grafana-secret-key = {
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file = ../../../secrets/grafana-secret-key.age;
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owner = "grafana";
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};
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# Bootloader
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boot = {
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loader = {
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systemd-boot.enable = true;
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efi = {
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canTouchEfiVariables = true;
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efiSysMountPoint = "/boot/";
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};
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};
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extraModprobeConfig = "vboxdrv";
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};
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environment.systemPackages = with pkgs; [
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clinfo
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jellyfin-ffmpeg
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libva-utils
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mesa-demos
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radeontop
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vulkan-tools
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];
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greg = {
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home = true;
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nebula = {
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enable = true;
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unsafeRoutes = [
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{
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route = "10.42.0.0/16";
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via = "10.157.0.2"; # genesis
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}
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];
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};
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proxies = {
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"jellyfin.home".target = "http://localhost:8096/";
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"jellyfin.thehellings.lan".target = "http://localhost:8096/";
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"grafana.home".target = "http://localhost:3001/";
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"grafana.thehellings.lan".target = "http://localhost:3001/";
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};
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tailscale = {
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enable = true;
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tags = [ "home" ];
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};
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};
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hardware = {
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enableAllFirmware = true;
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enableRedistributableFirmware = true;
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graphics = {
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enable = true;
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extraPackages = with pkgs; [
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intel-media-driver
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intel-vaapi-driver
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libva-vdpau-driver
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#intel-media-sdk
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intel-compute-runtime
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];
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};
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};
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networking = {
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defaultGateway = metadata.infra.gw;
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hostName = "hosea";
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interfaces = {
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"${wanInterface}".useDHCP = true;
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"${lanInterface}" = {
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useDHCP = false;
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ipv4.addresses = [
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{
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address = lanIpAddress;
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prefixLength = 16;
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}
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];
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};
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};
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nameservers = [ metadata.infra.dns ];
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};
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services = {
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albyhub = {
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enable = true;
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openFirewall = true;
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settings = {
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workDir = "/chain/alby";
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};
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};
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jellyfin = {
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enable = true;
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openFirewall = true;
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};
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grafana = {
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enable = true;
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provision = {
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enable = true;
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dashboards.settings.providers = [
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{
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name = "Dashboards";
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disableDeletion = true;
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options = {
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path = "/etc/grafana-dashboards";
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foldersFromFilesStructure = true;
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};
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}
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];
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datasources.settings.datasources = [
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{
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name = "Prometheus";
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type = "prometheus";
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uid = "prometheus";
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url = "https://prometheus.shire-zebra.ts.net";
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isDefault = true;
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editable = false;
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}
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];
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};
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settings = {
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security.secret_key = "$__file{${config.age.secrets.grafana-secret-key.path}}";
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server = {
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domain = "${config.networking.hostName}.shire-zebra.ts.net";
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enforce_domain = false;
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http_addr = "0.0.0.0";
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enable_gzip = true;
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http_port = 3001;
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};
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analytics.reporting_enabled = false;
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};
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};
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prometheus.exporters.graphite.enable = true;
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# Configure keymap
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xserver.xkb = {
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layout = "us";
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variant = "";
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};
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};
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# After first deploy: create a Grafana service account + API token for Klaatu
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# via the Grafana UI, then encrypt it: agenix -e secrets/grafana-api-token.age
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age.secrets.grafana-api-token = {
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file = ../../../secrets/grafana-api-token.age;
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owner = "grafana";
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};
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environment.etc = {
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"grafana-dashboards/system-health.json".text = ''
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{
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"uid": "system-health",
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"title": "System Health Overview",
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"schemaVersion": 38,
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"version": 1,
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"refresh": "30s",
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"time": {"from": "now-3h", "to": "now"},
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"panels": [
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{
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"id": 1,
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"type": "stat",
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"title": "Hosts Up",
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"gridPos": {"x": 0, "y": 0, "w": 6, "h": 4},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(up{job=\"node\"} == 1)", "refId": "A"}]
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},
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{
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"id": 2,
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"type": "stat",
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"title": "Hosts Down",
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"gridPos": {"x": 6, "y": 0, "w": 6, "h": 4},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(up{job=\"node\"} == 0) or vector(0)", "refId": "A"}],
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"fieldConfig": {
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"defaults": {
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"thresholds": {
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"mode": "absolute",
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"steps": [{"color": "green", "value": null}, {"color": "red", "value": 1}]
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}
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}
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}
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},
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{
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"id": 3,
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"type": "timeseries",
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"title": "CPU Usage %",
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"gridPos": {"x": 0, "y": 4, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "100 - (avg by(instance) (rate(node_cpu_seconds_total{mode=\"idle\"}[5m])) * 100)", "legendFormat": "{{instance}}", "refId": "A"}]
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},
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{
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"id": 4,
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"type": "timeseries",
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"title": "Memory Usage %",
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"gridPos": {"x": 12, "y": 4, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "(1 - (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes)) * 100", "legendFormat": "{{instance}}", "refId": "A"}]
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},
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{
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"id": 5,
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"type": "timeseries",
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"title": "Disk Usage % (/)",
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"gridPos": {"x": 0, "y": 12, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "100 - ((node_filesystem_avail_bytes{mountpoint=\"/\",fstype!~\"tmpfs|overlay\"} / node_filesystem_size_bytes{mountpoint=\"/\",fstype!~\"tmpfs|overlay\"}) * 100)", "legendFormat": "{{instance}}", "refId": "A"}]
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},
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{
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"id": 6,
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"type": "timeseries",
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"title": "Network RX bytes/s",
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"gridPos": {"x": 0, "y": 20, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "rate(node_network_receive_bytes_total{device!~\"lo|tailscale.*\"}[5m])", "legendFormat": "{{instance}} {{device}}", "refId": "A"}]
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},
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{
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"id": 7,
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"type": "timeseries",
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"title": "Network TX bytes/s",
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"gridPos": {"x": 12, "y": 20, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "rate(node_network_transmit_bytes_total{device!~\"lo|tailscale.*\"}[5m])", "legendFormat": "{{instance}} {{device}}", "refId": "A"}]
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}
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]
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}
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'';
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"grafana-dashboards/backup-health.json".text = ''
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{
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"uid": "backup-health",
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"title": "Backup Health",
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"schemaVersion": 38,
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"version": 1,
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"refresh": "30s",
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"time": {"from": "now-3h", "to": "now"},
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"panels": [
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{
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"id": 1,
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"type": "stat",
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"title": "Backup Jobs Reporting",
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"gridPos": {"x": 0, "y": 0, "w": 8, "h": 4},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(restic_last_success_timestamp_seconds) or vector(0)", "refId": "A"}]
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},
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{
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"id": 2,
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"type": "stat",
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"title": "Stale Backups (>26h)",
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"gridPos": {"x": 8, "y": 0, "w": 8, "h": 4},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(time() - restic_last_success_timestamp_seconds > 93600) or vector(0)", "refId": "A"}],
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"fieldConfig": {
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"defaults": {
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"thresholds": {
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"mode": "absolute",
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"steps": [{"color": "green", "value": null}, {"color": "red", "value": 1}]
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}
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}
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}
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},
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{
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"id": 3,
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"type": "table",
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"title": "Last Backup Times",
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"gridPos": {"x": 0, "y": 4, "w": 24, "h": 10},
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"options": {"instant": true},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "restic_last_success_timestamp_seconds", "instant": true, "refId": "A"}],
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"fieldConfig": {"defaults": {"unit": "dateTimeAsLocal"}}
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},
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{
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"id": 4,
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"type": "timeseries",
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"title": "Backup Duration (seconds)",
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"gridPos": {"x": 0, "y": 14, "w": 24, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "restic_last_run_duration_seconds", "refId": "A"}]
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}
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]
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}
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'';
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"grafana-dashboards/kubernetes.json".text = ''
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{
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"uid": "kubernetes-overview",
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"title": "Kubernetes Overview",
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"schemaVersion": 38,
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"version": 3,
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"refresh": "30s",
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"time": {"from": "now-3h", "to": "now"},
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"panels": [
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{
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"id": 1,
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"type": "stat",
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"title": "Running Pods",
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"gridPos": {"x": 0, "y": 0, "w": 6, "h": 4},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(kube_pod_status_phase{phase=\"Running\"} == 1) or vector(0)", "refId": "A"}]
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},
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{
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"id": 2,
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"type": "stat",
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"title": "Failed Pods",
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"gridPos": {"x": 6, "y": 0, "w": 6, "h": 4},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(kube_pod_status_phase{phase=\"Failed\"} == 1) or vector(0)", "refId": "A"}],
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"fieldConfig": {
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"defaults": {
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"thresholds": {
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"mode": "absolute",
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"steps": [{"color": "green", "value": null}, {"color": "red", "value": 1}]
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}
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}
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}
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},
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{
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"id": 3,
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"type": "stat",
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"title": "Pending Pods",
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"gridPos": {"x": 12, "y": 0, "w": 6, "h": 4},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(kube_pod_status_phase{phase=\"Pending\"} == 1) or vector(0)", "refId": "A"}],
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"fieldConfig": {
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"defaults": {
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"thresholds": {
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"mode": "absolute",
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"steps": [{"color": "green", "value": null}, {"color": "yellow", "value": 1}]
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}
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}
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}
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},
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{
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"id": 8,
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"type": "stat",
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"title": "Nodes Ready",
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"gridPos": {"x": 18, "y": 0, "w": 6, "h": 4},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(kube_node_status_condition{condition=\"Ready\",status=\"true\"} == 1) or vector(0)", "refId": "A"}],
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"fieldConfig": {
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"defaults": {
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"thresholds": {
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"mode": "absolute",
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"steps": [{"color": "red", "value": null}, {"color": "green", "value": 1}]
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}
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}
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}
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},
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{
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"id": 4,
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"type": "timeseries",
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"title": "Pod Restart Rate",
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"gridPos": {"x": 0, "y": 4, "w": 24, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "topk(10, rate(kube_pod_container_status_restarts_total[15m]) * 900)", "legendFormat": "{{namespace}}/{{pod}}", "refId": "A"}]
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},
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{
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"id": 9,
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"type": "timeseries",
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"title": "Container CPU Usage (cores)",
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"gridPos": {"x": 0, "y": 12, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "topk(10, rate(container_cpu_usage_seconds_total{container!=\"\",container!=\"POD\"}[5m]))", "legendFormat": "{{namespace}}/{{pod}}/{{container}}", "refId": "A"}]
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},
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{
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"id": 10,
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"type": "timeseries",
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"title": "Container Memory Usage",
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"gridPos": {"x": 12, "y": 12, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "topk(10, container_memory_working_set_bytes{container!=\"\",container!=\"POD\"})", "legendFormat": "{{namespace}}/{{pod}}/{{container}}", "refId": "A"}],
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"fieldConfig": {"defaults": {"unit": "bytes"}}
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},
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{
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"id": 5,
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"type": "table",
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"title": "All Pods",
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"gridPos": {"x": 0, "y": 20, "w": 24, "h": 10},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "kube_pod_status_phase == 1", "instant": true, "refId": "A"}]
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},
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{
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"id": 11,
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"type": "table",
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"title": "Deployments",
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"gridPos": {"x": 0, "y": 30, "w": 24, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "kube_deployment_status_replicas_available", "instant": true, "refId": "A"}]
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},
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{
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"id": 6,
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"type": "timeseries",
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"title": "Node CPU Usage",
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"gridPos": {"x": 0, "y": 38, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "100 - (avg by(node) (rate(node_cpu_seconds_total{mode=\"idle\",job=\"node\"}[5m])) * 100)", "refId": "A"}]
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||
},
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||
{
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"id": 7,
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"type": "timeseries",
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||
"title": "Node Memory Usage %",
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||
"gridPos": {"x": 12, "y": 38, "w": 12, "h": 8},
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"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "(1 - (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes)) * 100", "refId": "A"}]
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||
},
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{
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"id": 12,
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"type": "bargauge",
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"title": "Top 5 Fullest PersistentVolumes",
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"gridPos": {"x": 0, "y": 46, "w": 24, "h": 8},
|
||
"targets": [
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{
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"datasource": {"type": "prometheus", "uid": "prometheus"},
|
||
"expr": "topk(5, kubelet_volume_stats_used_bytes / kubelet_volume_stats_capacity_bytes * 100)",
|
||
"legendFormat": "{{namespace}}/{{persistentvolumeclaim}}",
|
||
"refId": "A",
|
||
"instant": true
|
||
}
|
||
],
|
||
"options": {
|
||
"reduceOptions": {"calcs": ["lastNotNull"]},
|
||
"orientation": "horizontal",
|
||
"displayMode": "gradient"
|
||
},
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||
"fieldConfig": {
|
||
"defaults": {
|
||
"unit": "percent",
|
||
"min": 0,
|
||
"max": 100,
|
||
"thresholds": {
|
||
"mode": "absolute",
|
||
"steps": [
|
||
{"color": "green", "value": null},
|
||
{"color": "yellow", "value": 70},
|
||
{"color": "red", "value": 90}
|
||
]
|
||
}
|
||
}
|
||
}
|
||
}
|
||
]
|
||
}
|
||
'';
|
||
|
||
"grafana-dashboards/network.json".text = ''
|
||
{
|
||
"uid": "network-overview",
|
||
"title": "Network & UniFi",
|
||
"schemaVersion": 38,
|
||
"version": 3,
|
||
"refresh": "30s",
|
||
"time": {"from": "now-3h", "to": "now"},
|
||
"panels": [
|
||
{
|
||
"id": 1,
|
||
"type": "timeseries",
|
||
"title": "DNS Queries",
|
||
"gridPos": {"x": 0, "y": 0, "w": 6, "h": 4},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "rate(dnsmasq_servers_queries[5m]) or vector(0)", "refId": "A"}]
|
||
},
|
||
{
|
||
"id": 3,
|
||
"type": "stat",
|
||
"title": "UniFi Devices",
|
||
"gridPos": {"x": 6, "y": 0, "w": 6, "h": 4},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(unpoller_device_uptime_seconds) or vector(0)", "refId": "A"}]
|
||
},
|
||
{
|
||
"id": 7,
|
||
"type": "stat",
|
||
"title": "WiFi Clients",
|
||
"gridPos": {"x": 12, "y": 0, "w": 6, "h": 4},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(unpoller_client_uptime_seconds{wired=\"false\"}) or vector(0)", "refId": "A"}]
|
||
},
|
||
{
|
||
"id": 8,
|
||
"type": "stat",
|
||
"title": "Wired Clients",
|
||
"gridPos": {"x": 18, "y": 0, "w": 6, "h": 4},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "count(unpoller_client_uptime_seconds{wired=\"true\"}) or vector(0)", "refId": "A"}]
|
||
},
|
||
{
|
||
"id": 9,
|
||
"type": "timeseries",
|
||
"title": "WAN RX (bytes/s)",
|
||
"gridPos": {"x": 0, "y": 4, "w": 12, "h": 8},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "unpoller_device_wan_receive_rate_bytes", "legendFormat": "{{name}}", "refId": "A"}],
|
||
"fieldConfig": {"defaults": {"unit": "Bps"}}
|
||
},
|
||
{
|
||
"id": 10,
|
||
"type": "timeseries",
|
||
"title": "WAN TX (bytes/s)",
|
||
"gridPos": {"x": 12, "y": 4, "w": 12, "h": 8},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "unpoller_device_wan_transmit_rate_bytes", "legendFormat": "{{name}}", "refId": "A"}],
|
||
"fieldConfig": {"defaults": {"unit": "Bps"}}
|
||
},
|
||
{
|
||
"id": 4,
|
||
"type": "timeseries",
|
||
"title": "UniFi Port RX (bytes/s)",
|
||
"gridPos": {"x": 0, "y": 12, "w": 12, "h": 8},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "rate(unpoller_device_port_receive_bytes_total[5m])", "legendFormat": "{{port_id}} {{name}}", "refId": "A"}],
|
||
"fieldConfig": {"defaults": {"unit": "Bps"}}
|
||
},
|
||
{
|
||
"id": 5,
|
||
"type": "timeseries",
|
||
"title": "UniFi Port TX (bytes/s)",
|
||
"gridPos": {"x": 12, "y": 12, "w": 12, "h": 8},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "rate(unpoller_device_port_transmit_bytes_total[5m])", "legendFormat": "{{port_id}} {{name}}", "refId": "A"}],
|
||
"fieldConfig": {"defaults": {"unit": "Bps"}}
|
||
},
|
||
{
|
||
"id": 11,
|
||
"type": "timeseries",
|
||
"title": "Top Client Throughput (bytes/s)",
|
||
"gridPos": {"x": 0, "y": 20, "w": 24, "h": 8},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "topk(10, rate(unpoller_client_receive_bytes_total[5m]) + rate(unpoller_client_transmit_bytes_total[5m]))", "legendFormat": "{{name}} {{ip}}", "refId": "A"}],
|
||
"fieldConfig": {"defaults": {"unit": "Bps"}}
|
||
},
|
||
{
|
||
"id": 6,
|
||
"type": "timeseries",
|
||
"title": "Ping Latency (ms)",
|
||
"gridPos": {"x": 0, "y": 28, "w": 12, "h": 8},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "probe_duration_seconds{job=\"ping\"} * 1000", "legendFormat": "{{instance}}", "refId": "A"}]
|
||
},
|
||
{
|
||
"id": 12,
|
||
"type": "table",
|
||
"title": "Device Status",
|
||
"gridPos": {"x": 12, "y": 28, "w": 12, "h": 8},
|
||
"targets": [{"datasource": {"type": "prometheus", "uid": "prometheus"}, "expr": "unpoller_device_uptime_seconds", "instant": true, "refId": "A"}],
|
||
"fieldConfig": {"defaults": {"unit": "s"}}
|
||
}
|
||
]
|
||
}
|
||
'';
|
||
};
|
||
|
||
users.users = {
|
||
greg.extraGroups = [ "vboxusers" ];
|
||
|
||
jellyfin.extraGroups = [
|
||
"video"
|
||
"render"
|
||
];
|
||
};
|
||
}
|