Importing your csv into elasticsearch using logstash

Matheus Lúcio
2 min readMar 22, 2021

A simple model to import your csv into elasticsearch using logstash

First Step

Certify if you have logstash in your machine, or download here https://www.elastic.co/pt/downloads/logstash

Second Step

You need to see the logstash.conf file and its structure, and adapt it if necessary.

input {
file {
path => "cities.csv"
start_position => "beginning"
}
}
filter {
csv {
separator => ","
columns => ["LatD", "LatM", "LatS", "NS", "LonD", "LonM", "LonS", "EW", "City", "State"]
}
}
output {
elasticsearch {
hosts => ["localhost:9200"]
index => "cities"
}
}

Input

The input section is about your file and respective configurations, in this case only setting the start position for the logstash start reading. Sometimes in path need to put real path like “D:/PATH/TO/YOUR/CITIES/cities.csv”.

Filter

The filter section is about your file structure, and the separation of columns and values. And have de mutate additional parameters, to mutate your data, in this case we using strip to remove whitespaces after and before any word, and removing dumb columns (“path”, “host”, “message”).

Output

The output section is to set your index (the collection to save the data) and your host destiny (address to elasticsearch).

More about config file

See more at https://www.elastic.co/guide/en/logstash/master/configuration-file-structure.html

Third Step

Now is ready to run the simple command logstash -f logstash.conf and the magic starts! Do you need to wait the process (maybe to take a time :D)…

Kibana showing your data

See in kibana your data after import:

All data

And Filtering

Enjoy the ELK stack !

Check the github for this project

https://github.com/fenxlol/elastic-logstash-csv-importer-sample-elk

Credits

Me @mathzdev Matheus’s Linkedin to create this simple tuto, and @WilsonLucas Wilson’s Linkedin for teach me about logstash. My website https://mathz.dev

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Matheus Lúcio

Senior Full Stack Developer, with experience and knowledge in Cloud Computing. Specialist in Software Engineering and Architecture. https://mathz.dev