Top 50 Elasticsearch Interview Questions and Answers

Explain in brief about Elasticsearch? Elasticsearch Apache Lucene search engine is a database that stores retrieve and manages document-oriented and semi-structured data. It provides real-time search and analytics for structured…

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Elasticsearch QUERY Parameters Examples with Explanation

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Elasticsearch-ELK Errors and Solutions Database

Elastic Search Error – Node is started with node.data=false, but has shard data Elastic Search Error – max virtual memory areas vm.max_map_count [65530] is too low, increase to at least…

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ElasticSearch Error – filebeat – filebeat.yml – did not find expected key

Errors Solutions Check filebeat.yml: Only one file beat output is supported …check #output.elasticsearch is comments

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ElasticSearch Error – filebeat – filebeat.yml – more than one namespace configured accessing ‘output’

Errors Answer Check output.logstash in filebeat.yml: should be uncommented.

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ElasticSearch Error – this can cause resize pauses and prevents mlockall from locking the entire heap

Error Message Solutions Setting the parameter -Xms to the same value of -Xmx in /etc/elasticsearch/jvm.options solved the problem 🙂 Thanks

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Elasticsearch Command Lines and their Usage Guide

elasticsearch elasticsearch-certgen elasticsearch-certutil elasticsearch-cli elasticsearch-croneval elasticsearch-env elasticsearch-env-from-file elasticsearch-keystore elasticsearch-migrate elasticsearch-node elasticsearch-plugin elasticsearch-saml-metadata elasticsearch-setup-passwords elasticsearch-shard elasticsearch-sql-cli elasticsearch-sql-cli-7.6.0.jar elasticsearch-syskeygen elasticsearch-users x-pack-env x-pack-security-env x-pack-watcher-env

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