Load-test rig: k6 swarm script + in-cluster target drone

manifests/loadtest/k6-script.yaml

@@ -0,0 +1,38 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: loadtest
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: k6-script
+  namespace: loadtest
+data:
+  test.js: |
+    // Generic load generator. Configured by env:
+    //   TARGET_URL  - full URL to hit
+    //   VUS         - virtual users per pod (default 20)
+    //   DURATION    - k6 duration string (default "60s")
+    import http from 'k6/http';
+    import { check, sleep } from 'k6';
+
+    const target = __ENV.TARGET_URL || 'http://example.com';
+    const vus = parseInt(__ENV.VUS || '20');
+    const duration = __ENV.DURATION || '60s';
+
+    export const options = {
+      stages: [
+        { duration: '10s', target: vus },
+        { duration: duration, target: vus },
+        { duration: '5s', target: 0 },
+      ],
+      thresholds: { http_req_failed: ['rate<0.01'] },
+      noConnectionReuse: false,
+    };
+
+    export default function () {
+      const res = http.get(target, { timeout: '10s' });
+      check(res, { 'status 2xx/3xx': (r) => r.status < 300 });
+      sleep(1 / vus * 10);
+    }