Opster Team
Last updated: Mar 30, 2021
| 1 min readIn addition to reading this guide, we recommend you run the Elasticsearch Health Check-Up. It will detect issues and improve your Elasticsearch performance by analyzing your shard sizes, threadpools, memory, snapshots, disk watermarks and more.The Elasticsearch Check-Up is free and requires no installation.
Overview
In Elasticsearch, persistent refers to cluster settings that persist across cluster restarts. This setting is used in Cluster Update API calls. Persistent settings can also be configured in the elasticsearch.yml file.
Examples
## enable shard routing PUT /_cluster/settings { "persistent" : { "cluster.routing.allocation.enable" : "all" } } ## enable rebalancing of shards PUT /_cluster/settings { "persistent" : { "cluster.routing.rebalance.enable" : "all" } } ## limit the heap size for fielddata PUT /_cluster/settings { "persistent" : { “indices.breaker.fielddata.limit”: "30%" } }
Related log errors to this ES concept
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