A filter plugin performs intermediary processing on an event. Filters are often applied conditionally depending on the characteristics of the event.
The following filter plugins are available below. For a list of Elastic supported plugins, please consult the Support Matrix.
Plugin |
Description |
Github repository |
Calculates the age of an event by subtracting the event timestamp from the current timestamp |
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Aggregates information from several events originating with a single task |
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Performs general alterations to fields that the |
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Parses string representations of computer storage sizes, such as "123 MB" or "5.6gb", into their numeric value in bytes |
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Checks IP addresses against a list of network blocks |
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Applies or removes a cipher to an event |
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Duplicates events |
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Parses comma-separated value data into individual fields |
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Parses dates from fields to use as the Logstash timestamp for an event |
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Computationally expensive filter that removes dots from a field name |
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Extracts unstructured event data into fields using delimiters |
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Performs a standard or reverse DNS lookup |
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Drops all events |
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Calculates the elapsed time between a pair of events |
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Copies fields from previous log events in Elasticsearch to current events |
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Stores environment variables as metadata sub-fields |
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Extracts numbers from a string |
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Fingerprints fields by replacing values with a consistent hash |
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Adds geographical information about an IP address |
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Parses unstructured event data into fields |
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Provides integration with external web services/REST APIs |
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Removes special characters from a field |
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Generates a UUID and adds it to each processed event |
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Enriches events with data pre-loaded from a remote database |
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Enrich events with your database data |
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Parses JSON events |
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Serializes a field to JSON |
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Parses key-value pairs |
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Provides integration with external data in Memcached |
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Takes complex events containing a number of metrics and splits these up into multiple events, each holding a single metric |
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Aggregates metrics |
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Performs mutations on fields |
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Prunes event data based on a list of fields to blacklist or whitelist |
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Checks that specified fields stay within given size or length limits |
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Executes arbitrary Ruby code |
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Sleeps for a specified time span |
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Splits multi-line messages, strings, or arrays into distinct events |
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Parses the |
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Enriches security logs with information about the attacker’s intent |
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Throttles the number of events |
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Replaces the contents of the default message field with whatever you specify in the configuration |
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Replaces field contents based on a hash or YAML file |
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Truncates fields longer than a given length |
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Decodes URL-encoded fields |
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Parses user agent strings into fields |
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Adds a UUID to events |
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Enriches logs with device information such as brand, model, OS |
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Parses XML into fields |