# 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.
> More information: <https://www.elastic.co/products/logstash>.

- 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 {}'`