OpenSearch Best Practices

OpenSearch scripts can place heavy loads on clusters if they are not written carefully. It is a best practice to limit the type of..

Adaptive replica selection is a process that prevents a distressed OpenSearch node from delaying the response to queries. To enable it...

OpenSearch cluster shard rebalancing and allocation are often confused with each other. If cluster shard rebalancing isn't enabled, then...

By default, OpenSearch expensive queries are allowed to run. By setting search.allow_expensive_queries to false, you can prevent users...

It's possible to reduce the risk of accidental deletion of indices by preventing OpenSearch wildcard use for destructive operations. To...

OpenSearch carries out "bootstrap checks" to ensure that important settings have been set correctly. If any of these fail, ES won't start.

OpenSearch can be configured to prevent memory swapping on its host machine by adding bootstrap memory_lock true. If bootstrap checks...

An OpenSearch read-only delete block can be applied automatically by the cluster because of a disk space issue. It can be applied manually...

File descriptors are required to keep track of all the files OpenSearch has open at any given time, as well as all network...

Script regex is disabled in OpenSearch by default, but you can decide to enable it. Regex must be used with care in painless scripts...