Elasticsearch Persistent Settings - A Short Guide with Examples

Elasticsearch Persistent

By Opster Team

Updated: Mar 21, 2023

| 1 min read

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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

Trying to update state on non-existing task

Failed to reassign persistent tasks

Persistent task with id and allocation id failed to create

The task with id was found but it has a different allocation id status is not updated

Attempt to complete task with id in the state

Task failed with an exception

Un-assigning persistent tasks

Unable to start allocated task

Fatal error registering persistent task

Notification for task with id failed

Persistent task id failed

The task wasn t found status is not updated

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