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Installation of ELK

Installation of ELK

Vivek Atwal's photo
Vivek Atwal
·

2 min read

Install Java

sudo apt install default-jre -y              # version 2:1.11-72
sudo apt install openjdk-8-jre-headless -y

Download Official Java Installation guide

Elasticsearch

Elasticsearch is available for different platforms Elasticsearch Kibana Logstash . If you are looking for a particular version of elasticsearch find here , In this article, we will go ahead with ELK 7.10 for Ubuntu.

  1. Download and run elasticsearch
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.10.0-linux-x86_64.tar.gz
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tar -xzf elasticsearch-7.10.0-linux-x86_64.tar.gz
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cd elasticsearch-7.10.1/
  1. Start elasticsearch
./bin/elasticsearch
  1. Once elasticsearch is started, Let's test by hitting localhost:9200

Kibana

  1. Download and unzip kibana
wget https://artifacts.elastic.co/downloads/kibana/kibana-7.10.0-linux-x86_64.tar.gz
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tar -xzf kibana-7.10.0-linux-x86_64.tar.gz
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cd kibana-7.10.0-linux-x86_64/
  1. start kibana
./bin/kibana

Tips

  • To run elasticsearch as a daemon in the background ./bin/elasticsearch -d -p pid and to shut down Elasticsearch, kill the process ID recorded in the PID file: pkill -F pid

What few commands to check on starting elasticsearch

  • Getting information about clusters and nodes

      GET _API/parameter

  • GET info about cluster

      GET _cluster/health

  • Get info about nodes in a cluster

      GET _nodes/stats

Uploading data to elasticsearch

This code can be used to generate ndjson from json for fast insertion of data in elasticsearch for experiments

Json to ndjson
jq -c -r ".[]" input.json | while read line; do echo '{"index":{}}'; echo $line; done > bulk.json
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curl -XPOST localhost:9200/your_index/your_type/_bulk -H "Content-Type: application/x-ndjson" --data-binary @bulk.json
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elasticsearch