Elasticsearch: Difference between revisions
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*[https://docs.oracle.com/cd/E13150_01/jrockit_jvm/jrockit/geninfo/diagnos/garbage_collect.html Garbage collect] | *[https://docs.oracle.com/cd/E13150_01/jrockit_jvm/jrockit/geninfo/diagnos/garbage_collect.html Garbage collect] | ||
*[https://sematext.com/blog/java-garbage-collection/#how-does-java-garbage-collection-work Garbage collection] | *[https://sematext.com/blog/java-garbage-collection/#how-does-java-garbage-collection-work Garbage collection] | ||
*[https://opster.com/guides/elasticsearch/capacity-planning/elasticsearch-heap-size-usage/ Elasticsearch Heap Size Usage and JVM Garbage Collection] | |||
=Monitoring elasticsearch= | =Monitoring elasticsearch= | ||
Revision as of 08:47, 23 August 2023
Links
Documentation
Configuration
Heap
Garbage collection
Monitoring elasticsearch
Things to monitor
heap size
- node jvm.mem.heap_used_percent
garbage collection
Something like
node.jvm.uptime_in_millis/node.jvm.gc.collectors.young.collection_count
- How to monitor Elasticsearch performance
- Top 10 Elasticsearch Metrics to Monitor
- Performance metrics to monitor
- Heap Size Usage
Query the web interface
- 'cluster': 'http://localhost:9200/_cluster/stats',
- 'nodes' : 'http://localhost:9200/_nodes/stats',
- 'indices': 'http://localhost:9200/_stats',
- 'health' : 'http://localhost:9200/_cluster/health'
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
and look for unassigned shards
