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

scripts/loadtest.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+# Spawn a k6 load swarm against a target.
+# Usage: ./scripts/loadtest.sh <target-url> [pods] [vus-per-pod] [duration]
+# Example: ./scripts/loadtest.sh https://staging.example.com 20 50 5m
+#   -> 20 pods x 50 virtual users = 1000 concurrent requests, 5 minutes
+set -euo pipefail
+
+TARGET=${1:?usage: loadtest.sh <target-url> [pods] [vus-per-pod] [duration]}
+PODS=${2:-20}
+VUS=${3:-20}
+DURATION=${4:-60s}
+NAME="loadtest-$(date +%s)"
+
+kubectl -n loadtest apply -f - <<EOF
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: $NAME
+spec:
+  parallelism: $PODS
+  completions: $PODS
+  ttlSecondsAfterFinished: 300
+  template:
+    spec:
+      restartPolicy: Never
+      containers:
+        - name: k6
+          image: grafana/k6:1.4.0
+          command: ["k6", "run", "/scripts/test.js"]
+          env:
+            - {name: TARGET_URL, value: "$TARGET"}
+            - {name: VUS, value: "$VUS"}
+            - {name: DURATION, value: "$DURATION"}
+          resources:
+            requests: {cpu: 100m, memory: 128Mi}
+            limits: {memory: 256Mi}
+          volumeMounts:
+            - {name: scripts, mountPath: /scripts}
+      volumes:
+        - name: scripts
+          configMap: {name: k6-script}
+EOF
+
+echo "Swarm '$NAME' launched: $PODS pods x $VUS vus for $DURATION against $TARGET"
+echo "Watch:  kubectl -n loadtest get pods -w"
+echo "Logs:   kubectl -n loadtest logs -f job/$NAME --all-pods=true --tail=5"
+echo "Stop:   kubectl -n loadtest delete job $NAME"