Elasticsearch
The elasticsearch input plugin handles both Elasticsearch and OpenSearch Bulk API requests.
Configuration Parameters
The plugin supports the following configuration parameters:
Key | Description | Default value |
---|---|---|
buffer_max_size | Set the maximum size of buffer. | 4M |
buffer_chunk_size | Set the buffer chunk size. | 512K |
tag_key | Specify a key name for extracting as a tag. |
|
meta_key | Specify a key name for meta information. | "@meta" |
hostname | Specify hostname or FQDN. This parameter can be used for "sniffing" (auto-discovery of) cluster node information. | "localhost" |
version | Specify Elasticsearch server version. This parameter is effective for checking a version of Elasticsearch/OpenSearch server version. | "8.0.0" |
Note: The Elasticsearch cluster uses "sniffing" to optimize the connections between its cluster and clients. Elasticsearch can build its cluster and dynamically generate a connection list which is called "sniffing". The hostname
will be used for sniffing information and this is handled by the sniffing endpoint.
Getting Started
In order to start performing the checks, you can run the plugin from the command line or through the configuration file:
Command Line
From the command line you can configure Fluent Bit to handle Bulk API requests with the following options:
Configuration File
In your main configuration file append the following Input & Output sections:
As described above, the plugin will handle ingested Bulk API requests. For large bulk ingestions, you may have to increase buffer size with buffer_max_size and buffer_chunk_size parameters:
Ingesting from beats series
Ingesting from beats series agents is also supported. For example, Filebeats, Metricbeat, and Winlogbeat are able to ingest their collected data through this plugin.
Note that Fluent Bit's node information is returning as Elasticsearch 8.0.0.
So, users have to specify the following configurations on their beats configurations:
For large log ingestion on these beat plugins, users might have to configure rate limiting on those beats plugins when Fluent Bit indicates that the application is exceeding the size limit for HTTP requests:
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