From f55307fd73af235069744dd5155fda0bc73fe613 Mon Sep 17 00:00:00 2001
From: lassulus <git@lassul.us>
Date: Thu, 7 Sep 2023 12:26:31 +0200
Subject: lass: migrate away

---
 lass/2configs/monitoring/telegraf.nix | 163 ----------------------------------
 1 file changed, 163 deletions(-)
 delete mode 100644 lass/2configs/monitoring/telegraf.nix

(limited to 'lass/2configs/monitoring/telegraf.nix')

diff --git a/lass/2configs/monitoring/telegraf.nix b/lass/2configs/monitoring/telegraf.nix
deleted file mode 100644
index b172b9c62..000000000
--- a/lass/2configs/monitoring/telegraf.nix
+++ /dev/null
@@ -1,163 +0,0 @@
-{ pkgs, lib, config, ... }:
-# To use this module you also need to allow port 9273 either on the internet or on a vpn interface
-# i.e. networking.firewall.interfaces."vpn0".allowedTCPPorts = [ 9273 ];
-# Example prometheus alert rules:
-# - https://github.com/Mic92/dotfiles/blob/master/nixos/eva/modules/prometheus/alert-rules.nix
-let
-  isVM = lib.any (mod: mod == "xen-blkfront" || mod == "virtio_console") config.boot.initrd.kernelModules;
-  # potentially wrong if the nvme is not used at boot...
-  hasNvme = lib.any (m: m == "nvme") config.boot.initrd.availableKernelModules;
-
-  ipv6DadCheck = pkgs.writeShellScript "ipv6-dad-check" ''
-    ${pkgs.iproute2}/bin/ip --json addr | \
-    ${pkgs.jq}/bin/jq -r 'map(.addr_info) | flatten(1) | map(select(.dadfailed == true)) | map(.local) | @text "ipv6_dad_failures count=\(length)i"'
-  '';
-
-  zfsChecks = lib.optional
-    (lib.any (fs: fs == "zfs") config.boot.supportedFilesystems)
-    (pkgs.writeScript "zpool-health" ''
-      #!${pkgs.gawk}/bin/awk -f
-      BEGIN {
-        while ("${pkgs.zfs}/bin/zpool status" | getline) {
-          if ($1 ~ /pool:/) { printf "zpool_status,name=%s ", $2 }
-          if ($1 ~ /state:/) { printf " state=\"%s\",", $2 }
-          if ($1 ~ /errors:/) {
-              if (index($2, "No")) printf "errors=0i\n"; else printf "errors=%di\n", $2
-          }
-        }
-      }
-    '');
-
-  nfsChecks =
-    let
-      collectHosts = shares: fs:
-        if builtins.elem fs.fsType [ "nfs" "nfs3" "nfs4" ]
-        then
-          shares
-          // (
-            let
-              # also match ipv6 addresses
-              group = builtins.match "\\[?([^\]]+)]?:([^:]+)$" fs.device;
-              host = builtins.head group;
-              path = builtins.elemAt group 1;
-            in
-            {
-              ${host} = (shares.${host} or [ ]) ++ [ path ];
-            }
-          )
-        else shares;
-      nfsHosts = lib.foldl collectHosts { } (builtins.attrValues config.fileSystems);
-    in
-    lib.mapAttrsToList
-      (
-        host: args:
-          (pkgs.writeScript "nfs-health" ''
-            #!${pkgs.gawk}/bin/awk -f
-            BEGIN {
-              for (i = 2; i < ARGC; i++) {
-                  mounts[ARGV[i]] = 1
-              }
-              while ("${pkgs.nfs-utils}/bin/showmount -e " ARGV[1] | getline) {
-                if (NR == 1) { continue }
-                if (mounts[$1] == 1) {
-                    printf "nfs_export,host=%s,path=%s present=1\n", ARGV[1], $1
-                }
-                delete mounts[$1]
-              }
-              for (mount in mounts) {
-                  printf "nfs_export,host=%s,path=%s present=0\n", ARGV[1], $1
-              }
-            }
-          '')
-          + " ${host} ${builtins.concatStringsSep " " args}"
-      )
-      nfsHosts;
-
-in
-{
-
-  systemd.services.telegraf.path = lib.optional (!isVM && hasNvme) pkgs.nvme-cli;
-
-  services.telegraf = {
-    enable = true;
-    extraConfig = {
-      agent.interval = "60s";
-      inputs = {
-        prometheus.urls = lib.mkIf config.services.promtail.enable [
-          # default promtail port
-          "http://localhost:9080/metrics"
-        ];
-        prometheus.metric_version = 2;
-        kernel_vmstat = { };
-        nginx.urls = lib.mkIf config.services.nginx.statusPage [
-          "http://localhost/nginx_status"
-        ];
-        smart = lib.mkIf (!isVM) {
-          path_smartctl = pkgs.writeShellScript "smartctl" ''
-            exec /run/wrappers/bin/sudo ${pkgs.smartmontools}/bin/smartctl "$@"
-          '';
-        };
-        system = { };
-        mem = { };
-        file =
-          [
-            {
-              data_format = "influx";
-              file_tag = "name";
-              files = [ "/var/log/telegraf/*" ];
-            }
-          ]
-          ++ lib.optional (lib.any (fs: fs == "ext4") config.boot.supportedFilesystems) {
-            name_override = "ext4_errors";
-            files = [ "/sys/fs/ext4/*/errors_count" ];
-            data_format = "value";
-          };
-        exec = [
-          {
-            ## Commands array
-            commands =
-              [ ipv6DadCheck ]
-                ++ zfsChecks
-                ++ nfsChecks;
-            data_format = "influx";
-          }
-        ];
-        systemd_units = { };
-        swap = { };
-        disk.tagdrop = {
-          fstype = [ "tmpfs" "ramfs" "devtmpfs" "devfs" "iso9660" "overlay" "aufs" "squashfs" ];
-          device = [ "rpc_pipefs" "lxcfs" "nsfs" "borgfs" ];
-        };
-        diskio = { };
-        zfs = {
-          poolMetrics = true;
-        };
-      } // lib.optionalAttrs (if lib.versionAtLeast (lib.versions.majorMinor lib.version) "23.11" then config.boot.swraid.enable else config.boot.initrd.services.swraid.enable) {
-        mdstat = { };
-      };
-      outputs.prometheus_client = {
-        listen = ":9273";
-        metric_version = 2;
-      };
-    };
-  };
-  security.sudo.extraRules = lib.mkIf (!isVM) [
-    {
-      users = [ "telegraf" ];
-      commands = [
-        {
-          command = "${pkgs.smartmontools}/bin/smartctl";
-          options = [ "NOPASSWD" ];
-        }
-      ];
-    }
-  ];
-  # avoid logging sudo use
-  security.sudo.configFile = ''
-    Defaults:telegraf !syslog,!pam_session
-  '';
-  # create dummy file to avoid telegraf errors
-  systemd.tmpfiles.rules = [
-    "f /var/log/telegraf/dummy 0444 root root - -"
-  ];
-}
-- 
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