Fix OutOfMemoryError

✅ Solution

OutOfMemoryError in Elasticsearch within an ELK stack typically arises from insufficient heap space allocated to the JVM or excessive memory consumption by queries and aggregations. Increase the JVM heap size (ES_JAVA_OPTS="-Xms<size> -Xmx<size>") in elasticsearch.yml, adjusting <size> based on available RAM and workload. Also, optimize complex queries and aggregations to reduce memory footprint.