Notify of SMART errors via email

configuration.nix

@@ -101,6 +101,7 @@ in {
     secrets.wireguard.file = secrets/wireguard.age;
     secrets.syncthing.file = secrets/syncthing.age;
     secrets.samba-ugent.file = secrets/samba-ugent.age;
+    secrets.msmtp.file = secrets/msmtp.age;
     identityPaths = [ "/etc/ssh/id_ed25519" ];
   };
 
@@ -159,6 +160,7 @@ in {
     ./modules/printing.nix
     ./modules/periodic.nix
     ./modules/power.nix
+    ./modules/monitoring.nix
     ./overlays/nix-direnv.nix
     ./overlays/openconnect-sso.nix
     ./overlays/cyrus-sasl-oauth2.nix

modules/monitoring.nix

@@ -0,0 +1,33 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # Notify when a disk starts going haywire
+  services.smartd = {
+    enable = true;
+    notifications.mail = {
+      enable = true;
+      sender = "akasroua+smartd@disroot.org";
+      recipient = "akasroua@disroot.org";
+      mailer = "${pkgs.msmtp}/bin/msmtp -t --read-envelope-from";
+    };
+  };
+
+  # Set up msmtp as notifier
+  programs.msmtp = {
+    enable = true;
+    defaults = {
+      port = 587;
+      tls = true;
+    };
+    accounts = {
+      default = {
+        auth = true;
+        host = "disroot.org";
+        user = "akasroua@disroot.org";
+        passwordeval =
+          "${pkgs.coreutils}/bin/cat ${config.age.secrets.msmtp.path}";
+      };
+    };
+  };
+
+}

secrets/msmtp.age

@@ -0,0 +1,8 @@
+age-encryption.org/v1
+-> ssh-ed25519 G5UUhw yZ6q0+opG1dPd+bziS6EK4Da2R1HI4SN5CNZTFR0NFI
+xx6fet9CzAuWdwEzQrR7qc6DJZDPUM+Ug995OHJnO+w
+-> -ENU/-grease sB@d>Z >aJ<En""
+rUSbcqOSzKWJRomQ8uqM0L1wq1OeKtmbAXRtDhisJcSIg82+eIF2jwf8Id7tMEyk
+KrTfLHN7Ts9b/duzBrM9FDqm6pE9DqxUp652Tyo9ENa/
+--- 07ccdiEaTyEPofLC2xPqYeF3lkMMFiAM2g1MKqv2pwc
+ ðÛ+4³/ǃTRÙ —¸§›ym¢
*Öp×Þ~ÿ¢EÅg5vºÊ½ï•œêPn'µƒi
ÎÐ><3E>»°^$RðPºÃzSà!<´<>š¥>²è<1F>#ç˜Ïžýýhú
éÀ

secrets/secrets.nix

@@ -5,4 +5,5 @@ in {
   "wireguard.age".publicKeys = [ coolneng ];
   "syncthing.age".publicKeys = [ coolneng ];
   "samba-ugent.age".publicKeys = [ coolneng ];
+  "msmtp.age".publicKeys = [ coolneng ];
 }