From e8d50f14185867d490f002aa5c408343ea5ea062 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Isma=C3=ABl=20Bouya?= <ismael.bouya@normalesup.org>
Date: Fri, 19 Apr 2024 23:43:13 +0200
Subject: Factorize smartd monitoring

---
 flakes/private/monitoring/flake.nix | 55 +++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

(limited to 'flakes/private')

diff --git a/flakes/private/monitoring/flake.nix b/flakes/private/monitoring/flake.nix
index b7c3997..5610d67 100644
--- a/flakes/private/monitoring/flake.nix
+++ b/flakes/private/monitoring/flake.nix
@@ -164,6 +164,13 @@
                 Whether to enable monitoring.
               '';
             };
+            smartdDisks = lib.mkOption {
+              type = lib.types.listOf lib.types.str;
+              default = [];
+              description = ''
+                List of smartd disks ids (symlinks in /dev/disk/by-id/) to monitor
+              '';
+            };
             master = lib.mkOption {
               type = lib.types.bool;
               default = false;
@@ -261,6 +268,54 @@
             objectDefs =
               self.lib.toObjects cfg.objects;
           };
+
+          myServices.monitoring.objects.service = builtins.map (d: {
+            service_description = "Disk /dev/disk/by-id/${d} is sane";
+            use = "local-service";
+            check_command = [ "check_smartctl" "/dev/disk/by-id/${d}" ];
+            __passive_servicegroups = "webstatus-resources";
+
+            check_interval = 60;
+          }) cfg.smartdDisks;
+
+          systemd = let
+            checkShortTimer = {
+              timerConfig = {
+                OnCalendar = "monthly";
+                RandomizedDelaySec = "3 weeks";
+                FixedRandomDelay = true;
+              };
+              wantedBy = [ "timers.target" ];
+            };
+            checkLongTimer = {
+              timerConfig = {
+                OnCalendar = "monthly";
+                RandomizedDelaySec = "3 weeks";
+                FixedRandomDelay = true;
+              };
+              wantedBy = [ "timers.target" ];
+            };
+            toSDTimers = id: {
+              "check-smartd-long-${id}" = checkLongTimer;
+              "check-smartd-short-${id}" = checkShortTimer;
+            };
+            toCheckService = id: type: {
+              description = "Run ${type} smartctl test for /dev/disk/by-id/${id}";
+              after = [ "multi-user.target" ];
+              serviceConfig = {
+                Type = "oneshot";
+                ExecStart = "${pkgs.smartmontools}/bin/smartctl -t ${type} /dev/disk/by-id/${id}";
+              };
+            };
+            toSDServices = id: {
+              "check-smartd-long-${id}" = toCheckService id "long";
+              "check-smartd-short-${id}" = toCheckService id "short";
+            };
+
+          in {
+            services = lib.attrsets.mergeAttrsList (builtins.map toSDServices cfg.smartdDisks);
+            timers = lib.attrsets.mergeAttrsList (builtins.map toSDTimers cfg.smartdDisks);
+          };
         };
       };
   };
-- 
cgit v1.2.3