init commit

scripts/zfs-healthcheck/service.nix

@@ -0,0 +1,38 @@
+{ config, pkgs, ... }:
+
+let
+  scriptPath = "${config.vars.homeDir}/nixos/scripts";
+  after = [ "network.target" "NetworkManager.service" "uptime-kuma.service" ];
+  environment = {
+    VAR_IP = config.vars.privateIp;
+  };
+in
+{
+  systemd.services = {
+    "zfs-uptime-kuma" = {
+      inherit environment after;
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig = {
+        Type = "oneshot";
+        User = "root";
+      };
+      path = with pkgs; [ bash curl zfs jq ];
+      script = ''
+        bash ${scriptPath}/zfs-healthcheck/uptime-kuma.sh
+      '';
+    };
+  };
+
+  systemd.timers = {
+   "zfs-uptime-kuma" = {
+      wantedBy = [ "timers.target" ];
+      partOf = [ "zfs-uptime-kuma.service" ];
+      timerConfig = {
+        Persistent = true; # Execute immediately if missed
+        OnUnitActiveSec = "7m"; # Run every x minutes
+        Unit = "zfs-uptime-kuma.service";
+      };
+    };
+  };
+}
+

scripts/zfs-healthcheck/uptime-kuma.sh

@@ -0,0 +1,29 @@
+#! /bin/sh
+set -euo pipefail
+set -x
+
+push_token=$(< /etc/env/zfs/push-token);
+
+start_time=$(date -u +%s%3N)
+health=$(zpool list -H -o health)
+
+status="up"
+
+echo "$health" | while IFS= read -r line; do
+  if [ "$line" != "ONLINE" ]; then
+    status="down"
+    break
+  fi
+done
+
+end_time=$(date -u +%s%3N)
+duration=$(("$end_time" - "$start_time"))
+
+msg=$(printf '%s' "$health" | tr '\n' ',' | tr -d "'" | jq -sRr @uri)
+url="http://$VAR_IP:4000/api/push/$push_token?ping=$duration&status=$status&msg='$msg'"
+
+output=$(curl --fail --no-progress-meter --retry 1 $url 2>&1)
+if [ $? -ne 0 ]; then
+    echo "Ping failed: $output" >&2
+fi
+