Elasticsearch module

This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.

This is the elasticsearch module.

When you run the module, it performs a few tasks under the hood:

  • Sets the default paths to the log files (but don’t worry, you can override the defaults)
  • Makes sure each multiline log event gets sent as a single event
  • Uses ingest node to parse and process the log lines, shaping the data into a structure suitable for visualizing in Kibana

Read the quick start to learn how to set up and run modules.

Compatibility

The Elasticsearch module is compatible with Elasticsearch 6.2 and newer.

Configure the module

You can further refine the behavior of the elasticsearch module by specifying variable settings in the modules.d/elasticsearch.yml file, or overriding settings at the command line.

Variable settings

Each fileset has separate variable settings for configuring the behavior of the module. If you don’t specify variable settings, the elasticsearch module uses the defaults.

For more information, see Configure variable settings. Also see Override input settings.

When you specify a setting at the command line, remember to prefix the setting with the module name, for example, elasticsearch.server.var.paths instead of server.var.paths.

server log fileset settings

var.paths

An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.

Example config:

  server:
    enabled: true
    var.paths:
      - /var/log/elasticsearch/*.log          # Plain text logs
      - /var/log/elasticsearch/*_server.json  # JSON logs

If you’re running against Elasticsearch >= 7.0.0, configure the var.paths setting to point to JSON logs. Otherwise, configure it to point to plain text logs.

gc log fileset settings

var.paths

An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.

Example config:

  gc:
    var.paths:
      - /var/log/elasticsearch/gc.log.[0-9]*
      - /var/log/elasticsearch/gc.log

audit log fileset settings

var.paths

An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.

Example config:

  audit:
    var.paths:
      - /var/log/elasticsearch/*_access.log  # Plain text logs
      - /var/log/elasticsearch/*_audit.json  # JSON logs

If you’re running against Elasticsearch >= 7.0.0, configure the var.paths setting to point to JSON logs. Otherwise, configure it to point to plain text logs.

slowlog log fileset settings

var.paths

An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.

Example config:

  slowlog:
    var.paths:
      - /var/log/elasticsearch/*_index_search_slowlog.log     # Plain text logs
      - /var/log/elasticsearch/*_index_indexing_slowlog.log   # Plain text logs
      - /var/log/elasticsearch/*_index_search_slowlog.json    # JSON logs
      - /var/log/elasticsearch/*_index_indexing_slowlog.json  # JSON logs

If you’re running against Elasticsearch >= 7.0.0, configure the var.paths setting to point to JSON logs. Otherwise, configure it to point to plain text logs.

deprecation log fileset settings

var.paths

An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.

Example config:

  deprecation:
    var.paths:
      - /var/log/elasticsearch/*_deprecation.log   # Plain text logs
      - /var/log/elasticsearch/*_deprecation.json  # JSON logs

If you’re running against Elasticsearch >= 7.0.0, configure the var.paths setting to point to JSON logs. Otherwise, configure it to point to plain text logs.

Timezone support

This module parses logs that don’t contain timezone information. For these logs, Filebeat reads the local timezone and uses it when parsing to convert the timestamp to UTC. The timezone to be used for parsing is included in the event in the event.timezone field.

To disable this conversion, the event.timezone field can be removed with the drop_fields processor.

If logs are originated from systems or applications with a different timezone to the local one, the event.timezone field can be overwritten with the original timezone using the add_fields processor.

See Processors for information about specifying processors in your config.

Fields

For a description of each field in the module, see the exported fields section.