fix disk pressure error

cdk.json

@@ -45,7 +45,8 @@
       "desiredSize": 2, 
       "minSize": 2, 
       "maxSize": 3,
-      "ebsSize": 50
+      "ebsSize": 50,
+      "ebsDeviceName": "/dev/xvda"
     },
     "existing.cluster.name": "single-new-eks-observability-accelerator",
     "existing.kubectl.rolename": "YOUR_KUBECTL_ROLE"

docs/patterns/single-new-eks-observability-accelerators/single-new-eks-gpu-opensource-observability.md

@@ -124,20 +124,23 @@ Example settings: Update the context in `cdk.json` file located in `cdk-eks-blue
       "desiredSize": 2, 
       "minSize": 2, 
       "maxSize": 3,
-      "ebsSize": 50
+      "ebsSize": 50,
+      "ebsDeviceName": "/dev/xvda"
     },
   }
 ```
 
-**Note**: insure your selected instance type is available in your region. To check that, you can run the following command (amend `Values` below as you see fit):
+**Note**: ensure your selected instance type is available in your region. To check that, you can run the following command (amend `Values` below as you see fit):
 
 ```bash
 aws ec2 describe-instance-type-offerings \
     --filters Name=instance-type,Values="g4*" \
     --query "InstanceTypeOfferings[].InstanceType" \
-    --region us-east-2
+    --region $AWS_REGION
 ```
 
+**Note**: ensure `ebsDeviceName` [reflects the name of the root device name of your AMI](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/device_naming.html).
+
 8. Once all pre-requisites are set you are ready to deploy the pipeline. Run the following command from the root of this repository to deploy the pipeline stack:
 
 ```bash

lib/single-new-eks-opensource-observability-pattern/gpu-index.ts

@@ -12,7 +12,8 @@ interface GpuNodeGroupProps {
     desiredSize: number, 
     minSize: number, 
     maxSize:number,
-    ebsSize: number
+    ebsSize: number,
+    ebsDeviceName: string
 }
 
 export default class SingleNewEksGpuOpenSourceObservabilityPattern {
@@ -113,7 +114,7 @@ function addGpuNodeGroup(gpuNodeGroupProps: GpuNodeGroupProps): blueprints.Manag
             requireImdsv2: false,
             blockDevices: [
                 {
-                    deviceName: "/dev/sda1",
+                    deviceName: gpuNodeGroupProps.ebsDeviceName,
                     volume: ec2.BlockDeviceVolume.ebs(gpuNodeGroupProps.ebsSize),
                 }
             ]