My Tech Memories

Yassine LASRI

Yassine LASRI

2 followers

Welcome to my Hashnode blog where i post some of my finding in tech world, mostly interested by topics related to data analytics, observability and cyber security. I like share my experience on ELK

Quick use case : Splitt big index into daily indexes with _reindex API

Jan 10, 20212 min read

Let's suppose you have a large timeseries index that holds multiple days, months or years of data and you want to split it into daily, weekly or...

Quick use case : Splitt big index into daily indexes with _reindex API

Quick use case : remove daily indices older than 90 days with ILM

Jan 8, 20213 min read

In this short post i will not dive into considerations on why i use daily indices instead of using a global ILM policy that will rollover and organize...

Quick use case : remove daily indices older than 90 days with ILM

Quick use case : clean index mapping with reindexing data

Jan 7, 20214 min read

By mistake i added some documents to my elasticsearch index without providing an explicit mapping, elasticsearch did the job and add a default mapping...

Quick use case : clean index mapping with reindexing data

Quick use case : Remove a field from a batch of documents in elasticsearch index

Jan 6, 20212 min read

I have an index that holds some inventory data from network devices, and tried to update these documents using logstash with other attributes from...

Quick use case : Remove a field from a batch of documents in elasticsearch index

Quick use case : Denormalizing data with logstash

Dec 30, 20203 min read

If you want to load the following data into elasticsearch, you will need to make some changes so you can create interesting tranforms and...

Quick use case : Denormalizing data with logstash

Radar Chart Example in Kibana with Vega

Dec 23, 20209 min read

Vega declarative grammar is a powerful way to visualize your data. Since Kibana 6.2, you can build rich Vega and Vega-Lite visualizations with your...

Radar Chart Example in Kibana with Vega