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egress-configuration.md

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Egress Configuration

When dotnet-monitor is used to produce artifacts such as dumps or traces, an egress provider enables the artifacts to be stored in a manner suitable for the hosting environment rather than streamed back directly.

Azure blob storage egress provider

Name Type Required Description
accountUri string true The URI of the Azure blob storage account.
containerName string true The name of the container to which the blob will be egressed. If egressing to the root container, use the "$root" sentinel value.
blobPrefix string false Optional path prefix for the artifacts to egress.
copyBufferSize string false The buffer size to use when copying data from the original artifact to the blob stream.
accountKey string false The account key used to access the Azure blob storage account; must be specified if accountKeyName is not specified.
sharedAccessSignature string false The shared access signature (SAS) used to access the Azure blob and optionally queue storage accounts; if using SAS, must be specified if sharedAccessSignatureName is not specified.
accountKeyName string false Name of the property in the Properties section that will contain the account key; must be specified if accountKey is not specified.
managedIdentityClientId string false The ClientId of the ManagedIdentity that can be used to authorize egress. Note this identity must be used by the hosting environment (such as Kubernetes) and must also have a Storage role with appropriate permissions.
sharedAccessSignatureName string false Name of the property in the Properties section that will contain the SAS token; if using SAS, must be specified if sharedAccessSignature is not specified.
queueName string false The name of the queue to which a message will be dispatched upon writing to a blob.
queueAccountUri string false The URI of the Azure queue storage account.
queueSharedAccessSignature string false (6.3+) The shared access signature (SAS) used to access the Azure queue storage account; if using SAS, must be specified if queueSharedAccessSignatureName is not specified.
queueSharedAccessSignatureName string false (6.3+) Name of the property in the Properties section that will contain the queue SAS token; if using SAS, must be specified if queueSharedAccessSignature is not specified.
metadata Dictionary<string, string> false A mapping of metadata keys to environment variable names. The values of the environment variables will be added as metadata for egressed artifacts.

Note

Starting with dotnet monitor 7.0, all built-in metadata keys are prefixed with DotnetMonitor_; to avoid metadata naming conflicts, avoid prefixing your metadata keys with DotnetMonitor_.

Example azureBlobStorage provider

JSON 
{
    "Egress": {
        "AzureBlobStorage": {
            "monitorBlob": {
                "accountUri": "https://exampleaccount.blob.core.windows.net",
                "containerName": "dotnet-monitor",
                "blobPrefix": "artifacts",
                "accountKeyName": "MonitorBlobAccountKey"
            }
        },
        "Properties": {
            "MonitorBlobAccountKey": "accountKey"
        }
    }
}
Kubernetes ConfigMap 
Egress__AzureBlobStorage__monitorBlob__accountUri: "https://exampleaccount.blob.core.windows.net"
Egress__AzureBlobStorage__monitorBlob__containerName: "dotnet-monitor"
Egress__AzureBlobStorage__monitorBlob__blobPrefix: "artifacts"
Egress__AzureBlobStorage__monitorBlob__accountKeyName: "MonitorBlobAccountKey"
Egress__Properties__MonitorBlobAccountKey: "accountKey"
Kubernetes Environment Variables 
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__accountUri
  value: "https://exampleaccount.blob.core.windows.net"
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__containerName
  value: "dotnet-monitor"
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__blobPrefix
  value: "artifacts"
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__accountKeyName
  value: "MonitorBlobAccountKey"
- name: DotnetMonitor_Egress__Properties__MonitorBlobAccountKey
  value: "accountKey"

Example azureBlobStorage provider with queue

JSON 
{
    "Egress": {
        "AzureBlobStorage": {
            "monitorBlob": {
                "accountUri": "https://exampleaccount.blob.core.windows.net",
                "containerName": "dotnet-monitor",
                "blobPrefix": "artifacts",
                "accountKeyName": "MonitorBlobAccountKey",
                "queueAccountUri": "https://exampleaccount.queue.core.windows.net",
                "queueName": "dotnet-monitor-queue"
            }
        },
        "Properties": {
            "MonitorBlobAccountKey": "accountKey"
        }
    }
}
Kubernetes ConfigMap 
Egress__AzureBlobStorage__monitorBlob__accountUri: "https://exampleaccount.blob.core.windows.net"
Egress__AzureBlobStorage__monitorBlob__containerName: "dotnet-monitor"
Egress__AzureBlobStorage__monitorBlob__blobPrefix: "artifacts"
Egress__AzureBlobStorage__monitorBlob__accountKeyName: "MonitorBlobAccountKey"
Egress__AzureBlobStorage__monitorBlob__queueAccountUri: "https://exampleaccount.queue.core.windows.net"
Egress__AzureBlobStorage__monitorBlob__queueName: "dotnet-monitor-queue"
Egress__Properties__MonitorBlobAccountKey: "accountKey"
Kubernetes Environment Variables 
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__accountUri
  value: "https://exampleaccount.blob.core.windows.net"
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__containerName
  value: "dotnet-monitor"
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__blobPrefix
  value: "artifacts"
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__accountKeyName
  value: "MonitorBlobAccountKey"
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__queueAccountUri
  value: "https://exampleaccount.queue.core.windows.net"
- name: DotnetMonitor_Egress__AzureBlobStorage__monitorBlob__queueName
  value: "dotnet-monitor-queue"
- name: DotnetMonitor_Egress__Properties__MonitorBlobAccountKey
  value: "accountKey"

azureBlobStorage Queue Message Format

The Queue Message's payload will be the blob name (<BlobPrefix>/<ArtifactName>; using the above example with an artifact named mydump.dmp, this would be artifacts/mydump.dmp) that is being egressed to blob storage. This is designed to be easily integrated into an Azure Function that triggers whenever a new message is added to the queue, providing you with the contents of the artifact as a stream. See Azure Blob storage input binding for Azure Functions for an example.

(8.0+) S3 storage egress provider

Name Type Required Description
endpoint string false An optional endpoint of S3 storage service. Can be left empty in case of using AWS.
bucketName string true The name of the S3 Bucket to which the blob will be egressed.
accessKeyId string false The AWS AccessKeyId for IAM user to login.
secretAccessKey string false The AWS SecretAccessKey associated AccessKeyId for IAM user to login. To login by access key id the 'secretAccessKey' must be set.
awsProfileName string false The AWS profile name to be used for login.
awsProfilePath string false The AWS profile path, if profile details not stored in default path.
regionName string false A Region is a named set of AWS resources in the same geographical area. This option specifies the region to connect to. If the Endpoint is specified, this is the AuthenticationRegion; otherwise, it is the RegionEndpoint.
preSignedUrlExpiry TimeStamp? false When specified, a pre-signed url is returned after successful upload; this value specifies the amount of time the generated pre-signed url should be accessible. The value has to be between 1 minute and 1 day.
forcePathStyle bool false The boolean flag set for AWS connection configuration ForcePathStyle option.
copyBufferSize int false The buffer size to use when copying data from the original artifact to the blob stream. There is a minimum size of 5 MB which is set when the given value is lower.

Example S3 storage provider

JSON with password 
{
    "Egress": {
        "S3Storage": {
            "monitorS3Blob": {
                "endpoint": "http://localhost:9000",
                "bucketName": "myS3Bucket",
                "accessKeyId": "minioUser",
                "secretAccessKey": "mySecretPassword",
                "regionName": "us-east-1",
                "preSignedUrlExpiry" : "00:15:00",
                "copyBufferSize": 1024
            }
        }
    }
}
Kubernetes Secret 
#!/bin/sh
kubectl create secret generic my-s3-secrets \
--from-literal=Egress__S3Storage__monitorS3Blob__bucketName=myS3Bucket \
--from-literal=Egress__S3Storage__monitorS3Blob__accessKeyId=minioUser \
--from-literal=Egress__S3Storage__monitorS3Blob__secretAccessKey=mySecretPassword \
--from-literal=Egress__S3Storage__monitorS3Blob__regionName=us-east-1 \
--dry-run=client -o yaml | kubectl apply -f -

Filesystem egress provider

Name Type Description
directoryPath string The directory path to which the stream data will be egressed.
intermediateDirectoryPath string The directory path to which the stream data will initially be written; if specified, the file will then be moved/renamed to the directory specified in 'directoryPath'.

Example fileSystem provider

JSON 
{
    "Egress": {
        "FileSystem": {
            "monitorFile": {
                "directoryPath": "/artifacts",
                "intermediateDirectoryPath": "/intermediateArtifacts"
            }
        }
    }
}
Kubernetes ConfigMap 
Egress__FileSystem__monitorFile__directoryPath: "/artifacts"
Egress__FileSystem__monitorFile__intermediateDirectoryPath: "/intermediateArtifacts"
Kubernetes Environment Variables 
- name: DotnetMonitor_Egress__FileSystem__monitorFile__directoryPath
  value: "/artifacts"
- name: DotnetMonitor_Egress__FileSystem__monitorFile__intermediateDirectoryPath
  value: "/intermediateArtifacts"