Fix Grafana dashboard restart workload detection

scripts/grafana-dashboards

@@ -23,6 +23,7 @@ apply_dashboards() {
     local file
     local base
     local name
+    local grafana_workload=""
 
     if ! command -v kubectl >/dev/null 2>&1; then
         echo "kubectl is required." >&2
@@ -46,7 +47,25 @@ apply_dashboards() {
     done < <(list_dashboards)
 
     echo "Restarting Grafana so the sidecar reloads dashboards..."
-    kubectl --kubeconfig "$KUBECONFIG_PATH" -n "$NAMESPACE" rollout restart deployment/prometheus-stack-grafana
+    if kubectl --kubeconfig "$KUBECONFIG_PATH" -n "$NAMESPACE" get deployment prometheus-stack-grafana >/dev/null 2>&1; then
+        grafana_workload="deployment/prometheus-stack-grafana"
+    elif kubectl --kubeconfig "$KUBECONFIG_PATH" -n "$NAMESPACE" get statefulset prometheus-stack-grafana >/dev/null 2>&1; then
+        grafana_workload="statefulset/prometheus-stack-grafana"
+    else
+        grafana_workload="$(
+            kubectl --kubeconfig "$KUBECONFIG_PATH" -n "$NAMESPACE" get deployment,statefulset \
+                -l app.kubernetes.io/name=grafana \
+                -o name 2>/dev/null | head -n 1
+        )"
+    fi
+
+    if [ -z "$grafana_workload" ]; then
+        echo "Grafana workload was not found in namespace ${NAMESPACE}; dashboards were applied but Grafana was not restarted." >&2
+        echo "Check with: kubectl -n ${NAMESPACE} get deploy,sts | grep grafana" >&2
+        return 1
+    fi
+
+    kubectl --kubeconfig "$KUBECONFIG_PATH" -n "$NAMESPACE" rollout restart "$grafana_workload"
 }
 
 case "${1:-list}" in