Elasticsearch

Links

• http://jprante.github.io/2012/11/28/Elasticsearch-Java-Virtual-Machine-settings-explained.html
• https://www.elastic.co/blog/a-heap-of-trouble

Monitoring elasticsearch

• How to monitor Elasticsearch performance
• Top 10 Elasticsearch Metrics to Monitor
• Performance metrics to monitor
• Heap Size Usage

Installing Elasticsearch

On Debian

deb https://artifacts.elastic.co/packages/oss-6.x/apt stable main

packages is called elasticsearch-oss now?

Terminology

shards

"blocks" of index data distributed over the nodes

Percolation

https://spinscale.de/posts/2021-09-15-understanding-elasticsearch-percolate-query.html

FAQ

Status is yellow

• Yellow cluster status explained

and look for unassigned shards