Azure Blob

The Azure Blob output plugin allows ingesting your records into Azure Blob Storage service. This connector is designed to use the Append Blob and Block Blob API.
Our plugin works with the official Azure Service and also can be configured to be used with a service emulator such as Azurite.
Azure Storage Account
Before getting started, make sure you already have an Azure Storage account. As a reference, the following link explains step-by-step how to set up your account:
​Azure Blob Storage Tutorial (Video)​
Configuration Parameters
We expose different configuration properties. The following table lists all the options available, and the next section has specific configuration details for the official service or the emulator.
Key
Description
default
account_name
Azure Storage account name. This configuration property is mandatory
​
shared_key
Specify the Azure Storage Shared Key to authenticate against the service. This configuration property is mandatory.
​
container_name
Name of the container that will contain the blobs. This configuration property is mandatory
​
blob_type
Specify the desired blob type. Fluent Bit supports appendblob and blockblob.
appendblob
auto_create_container
If container_name does not exist in the remote service, enabling this option will handle the exception and auto-create the container.
on
path
Optional path to store your blobs. If your blob name is myblob, you can specify sub-directories where to store it using path, so setting path to /logs/kubernetes will store your blob in /logs/kubernetes/myblob.
​
emulator_mode
If you want to send data to an Azure emulator service like Azurite, enable this option so the plugin will format the requests to the expected format.
off
endpoint
If you are using an emulator, this option allows you to specify the absolute HTTP address of such service. e.g: http://127.0.0.1:10000.
​
tls
Enable or disable TLS encryption. Note that Azure service requires this to be turned on.
off
Getting Started
As mentioned above, you can either deliver records to the official service or an emulator. Below we have an example for each use case.
Configuration for Azure Storage Service
The following configuration example generates a random message with a custom tag:
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[SERVICE]
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    flush     1
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    log_level info
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​
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[INPUT]
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    name      dummy
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    dummy     {"name": "Fluent Bit", "year": 2020}
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    samples   1
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    tag       var.log.containers.app-default-96cbdef2340.log
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​
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[OUTPUT]
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    name                  azure_blob
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    match                 *
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    account_name          YOUR_ACCOUNT_NAME
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    shared_key            YOUR_SHARED_KEY
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    path                  kubernetes
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    container_name        logs
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    auto_create_container on
19
    tls                   on
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After you run the configuration file above, you will be able to query the data using the Azure Storage Explorer. The example above will generate the following content in the explorer:
Configuring and using Azure Emulator: Azurite
Install and run Azurite
The quickest way to get started is to install Azurite using npm:
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$ npm install -g azurite
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then run the service:
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$ azurite
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Azurite Blob service is starting at http://127.0.0.1:10000
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Azurite Blob service is successfully listening at http://127.0.0.1:10000
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Azurite Queue service is starting at http://127.0.0.1:10001
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Azurite Queue service is successfully listening at http://127.0.0.1:10001
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Configuring Fluent Bit for Azurite
​Azurite comes with a default account_name and shared_key, so make sure to use the specific values provided in the example below (do an exact copy/paste):
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[SERVICE]
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    flush     1
3
    log_level info
4
​
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[INPUT]
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    name      dummy
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    dummy     {"name": "Fluent Bit", "year": 2020}
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    samples   1
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    tag       var.log.containers.app-default-96cbdef2340.log
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​
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[OUTPUT]
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    name                  azure_blob
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    match                 *
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    account_name          devstoreaccount1
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    shared_key            Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==
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    path                  kubernetes
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    container_name        logs
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    auto_create_container on
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    tls                   off
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    emulator_mode         on
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    endpoint              http://127.0.0.1:10000
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after running that Fluent Bit configuration you will see the data flowing into Azurite:
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$ azurite
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Azurite Blob service is starting at http://127.0.0.1:10000
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Azurite Blob service is successfully listening at http://127.0.0.1:10000
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Azurite Queue service is starting at http://127.0.0.1:10001
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Azurite Queue service is successfully listening at http://127.0.0.1:10001
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127.0.0.1 - - [03/Sep/2020:17:40:03 +0000] "GET /devstoreaccount1/logs?restype=container HTTP/1.1" 404 -
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127.0.0.1 - - [03/Sep/2020:17:40:03 +0000] "PUT /devstoreaccount1/logs?restype=container HTTP/1.1" 201 -
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127.0.0.1 - - [03/Sep/2020:17:40:03 +0000] "PUT /devstoreaccount1/logs/kubernetes/var.log.containers.app-default-96cbdef2340.log?comp=appendblock HTTP/1.1" 404 -
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127.0.0.1 - - [03/Sep/2020:17:40:03 +0000] "PUT /devstoreaccount1/logs/kubernetes/var.log.containers.app-default-96cbdef2340.log HTTP/1.1" 201 -
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127.0.0.1 - - [03/Sep/2020:17:40:04 +0000] "PUT /devstoreaccount1/logs/kubernetes/var.log.containers.app-default-96cbdef2340.log?comp=appendblock HTTP/1.1" 201 -
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Contents

Azure Storage Account

Configuration Parameters

Getting Started

Configuration for Azure Storage Service

Configuring and using Azure Emulator: Azurite