adding tls cert creation and updating num workers in hf notebook

Author: Fiona-Waters

demo-notebooks/additional-demos/hf_interactive.ipynb

@@ -89,7 +89,8 @@
    "source": [
     "# Create our cluster and submit\n",
     "# The SDK will try to find the name of your default local queue based on the annotation \"kueue.x-k8s.io/default-queue\": \"true\" unless you specify the local queue manually below\n",
-    "cluster = Cluster(ClusterConfiguration(name='hfgputest', \n",
+    "cluster_name= \"hfgputest\"\n",
+    "cluster = Cluster(ClusterConfiguration(name=cluster_name, \n",
     "                                       head_gpus=1, # For GPU enabled workloads set the head_gpus and num_gpus\n",
     "                                       num_gpus=1,\n",
     "                                       num_workers=1,\n",
@@ -287,6 +288,27 @@
     "ray_cluster_uri = cluster.cluster_uri()"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "64d65c3c",
+   "metadata": {},
+   "source": [
+    "Now we can connect directly to our Ray cluster via the Ray python client:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "60276d86",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from codeflare_sdk import generate_cert\n",
+    "# Create required TLS cert and export the environment variables to enable TLS\n",
+    "generate_cert.generate_tls_cert(cluster_name, cluster.config.namespace)\n",
+    "generate_cert.export_env(cluster_name, cluster.config.namespace)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "44dba6a0-8275-4726-8911-6b6ec467b6a3",
@@ -432,7 +454,7 @@
     "\n",
     "    ray_trainer = TorchTrainer(\n",
     "        train_func,\n",
-    "        scaling_config=ScalingConfig(num_workers=3, use_gpu=True),\n",
+    "        scaling_config=ScalingConfig(num_workers=2, use_gpu=True),\n",
     "        # Configure persistent storage that is accessible across \n",
     "        # all worker nodes.\n",
     "        # Uncomment and update the RunConfig below to include your storage details.\n",