Detect Configuration Drift Compare to Baseline

Specialized Areas/CMDB/Detect Configuration Drift Compare to Baseline/README.md

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+This ServiceNow business rule script is designed to detect configuration drift in a Configuration Item (CI) by comparing its current state to the most recent baseline record stored in the cmdb_baseline table.
+
+What it Does – In Simple Terms:
+Gets the latest baseline for the current CI.
+Compares key fields (ram, cpu_count, os) between the current CI and the baseline.
+If differences (a "drift") are found:
+It logs the drift in a custom table (u_drift_log).
+It triggers an event (ci.drift_detected) to possibly notify or take further action.
+.

Specialized Areas/CMDB/Detect Configuration Drift Compare to Baseline/code.js

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+(function executeRule(current, previous) {
+    var baseline = new GlideRecord('cmdb_baseline');
+    baseline.addQuery('ci', current.sys_id);
+    baseline.orderByDesc('sys_created_on');
+    baseline.query();
+
+    if (baseline.next()) {
+        var drift = false;
+        var changes = [];
+
+        if (baseline.ram != current.ram) {
+            drift = true; changes.push('RAM');
+        }
+
+        if (baseline.cpu_count != current.cpu_count) {
+            drift = true; changes.push('CPU');
+        }
+
+        if (baseline.os != current.os) {
+            drift = true; changes.push('OS');
+        }
+
+        if (drift) {
+            var log = new GlideRecord('u_drift_log');
+            log.initialize();
+            log.u_ci = current.sys_id;
+            log.u_detected_on = new GlideDateTime();
+            log.u_drift_fields = changes.join(', ');
+            log.insert();
+
+            gs.eventQueue('ci.drift_detected', current, changes.join(', '));
+        }
+    }
+})(current, previous);