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.
logstash --configtest --config {{logstash_config.conf}}
sudo logstash --config {{logstash_config.conf}}
sudo logstash -e 'input {} filter {} output {}'