Elasticsearch

Elasticsearch destination plugin

Elasticsearch is a search and analytics engine that is commonly used to store and analyze large volumes of machine-generated data, such as logs, metrics, and other telemetry data. The Elasticsearch destination plugin in Calyptia Core lets you integrate your telemetry data with Elasticsearch, enabling you to store, search, and visualize your data using Elasticsearch's powerful indexing and querying capabilities.

With the Elasticsearch destination plugin, you can configure your Calyptia Core pipeline to output your telemetry data to Elasticsearch.

This plugin provides a flexible and configurable way to transmit your data to Elasticsearch, letting you to customize the indexing settings, document mappings, and other attributes of your data to suit your specific needs.

Configuration parameters

The Elasticsearch destination plugin provides these configuration parameters.

General

Key	Description
Host	IP address or hostname of the target Elasticsearch instance.
Port	TCP port of the target Elasticsearch instance.
Index	Index name.
Logstash format	Enable Logstash format compatibility.

Security and TLS

Key	Description
TLS	Enable or disable TLS/SSL support.
TLS Certificate Validation	Turn TLS/SSL certificate validation on or off. TLS must be on for this setting to be enabled.
TLS Debug Level	Set TLS debug verbosity level. Accepts these values: 0 (No debug), 1 (Error), 2 (State change), 3 (Informational), 4 (Verbose).
CA Certificate File Path	Absolute path to CA certificate file.
Certificate File Path	Absolute path to certificate file.
Private key File Path	Absolute path to private key file.
Private Key Path Password	Optional password for tls.key_file file.
TLS SNI Hostname Extension	Hostname to be used for TLS SNI extension.

Advanced

Key	Description
Replace Dots	When enabled, replace field name dots with underscore, required by versions of Elasticsearch.
Type	Type Name.
Suppress Type Name	If true, mapping types are removed. for v7.0.0 or later.
Buffer Size	Specify the buffer size used to read the response from the Elasticsearch HTTP service. Use this option for debugging purposes where it's required to read full responses. Response size grows depending of the number of records inserted. To set an unlimited amount of memory set this value to false, otherwise the value must be according to the Unit Size specification.
Path	Elasticsearch accepts new data on HTTP query path /_bulk. But it is also possible to serve Elasticsearch behind a reverse proxy on a sub path. This option defines such path on the fluent-bit side. It adds only a path prefix in the indexing HTTP POST URI.
Pipeline	Newer versions of Elasticsearch allows to setup filters called pipelines. This option allows to define which pipeline the database should use. For performance reasons is strongly suggested to do parsing and filtering on Fluent Bit side, avoid pipelines.
Generate ID	When enabled, generate _id for outgoing records. This prevents duplicate records when retrying ES.
Write Operation	Operation to use to write in bulk requests.
ID Key	If set, _id will be the value of the key from incoming record.
Replace Dots	Use current time for index generation instead of message record.
Logstash Prefix	When Logstash_Format is enabled, the Index name is composed using a prefix and the date. For example, if Logstash_Prefix is equal to mydata, your index will become mydata-YYYY.MM.DD. The last string appended belongs to the date when the data is being generated.
Logstash Prefix Key	When included: the value in the record that belongs to the key will be looked up and over-write the Logstash_Prefix for index generation. If the key/value is not found in the record then the Logstash_Prefix option will act as a fallback. Nested keys are supported through record accessor pattern.
Logstash Date Format	Time format (based on strftime) to generate the second part of the Index name.
Time Key	When Logstash_Format is enabled, each record will get a new timestamp field. The Time_Key property defines the name of that field.
Time Key Format	When Logstash_Format is enabled, this property defines the format of the timestamp.
Time Key Nanos	When Logstash_Format is enabled, enabling this property sends nanosecond precision timestamps.
Include Tag Key	When enabled, it append the Tag name to the record.
Tag Key	When Include_Tag_key is enabled, this property defines the key name of the tag in the message.

Basic authentication

Key	Description
HTTP Username	Basic Auth Username.
HTTP Password	Basic Auth Password. Requires HTTP_User to be set.

AWS authentication

Key	Description
Enable AWS Authentication	Enable AWS Sigv4 Authentication.
AWS Region	AWS Region of your service.
AWS STS Endpoint	Custom endpoint for the AWS STS API, used with the AWS_Role_ARN option.
AWS IAM Assume Role	ARN of an IAM role to assume (ex. for cross-account access).
AWS External ID	Specify an external ID for the STS API, can be used with the aws_role_arn parameter if your role requires an external ID.

Elastic Cloud authentication

Key	Description
Elastic Cloud ID	Elastic cloud ID of the cluster to connect to.
Elastic Cloud Authentication Credentials	Elastic cloud authentication credentials.

Advanced networking

Key	Description
DNS Mode	Select the primary DNS connection type (TCP or UDP).
DNS Resolver	Select the primary DNS connection type (TCP or UDP).
Prefer IPv4	Prioritize IPv4 DNS results when trying to establish a connection.
Keepalive	Enable or disable Keepalive support.
Keepalive Idle Timeout	Set maximum time allowed for an idle Keepalive connection.
Max Connect Timeout	Set maximum time allowed to establish a connection, this time includes the TLS handshake.
Max Connect Timeout Log Error	On connection timeout, specify if it should log an error. When disabled, the timeout is logged as a debug message.
Max Keepalive Recycle	Set maximum number of times a keepalive connection can be used before it is retired.
Source Address	Specify network address to bind for data traffic.

Debugging

Key	Description
Trace Output	When enabled, print the Elasticsearch API calls to stdout (for diag only).
Trace Error	When enabled, print the Elasticsearch exception to stderr (for diag only).