tldr/pages/common/logstash.md

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# logstash
> An Elasticsearch ETL (extract, transform and load) tool.
> Commonly used to load data from various sources (such as databases and log files) into Elasticsearch.
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> More information: <https://www.elastic.co/products/logstash>.
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- Check validity of a logstash configuration:
`logstash --configtest --config {{logstash_config.conf}}`
- Run logstash using configuration:
`sudo logstash --config {{logstash_config.conf}}`
- Run logstash with the most basic inline configuration string:
`sudo logstash -e 'input {} filter {} output {}'`