<ul><li>To prevent BufferOverflowError when getting logs from Kafka/in_tail and facing connection issues to OpenSearch/ElasticSearch, you can customize Fluentd buffer in the output.</li><li>Set flush_mode to 'interval', flush_interval to a custom time, and overflow_action to 'block' to handle buffer overflow.</li><li>Configure retry_max_interval to set the maximum interval for retries and retry_randomize to false for a randomized interval.</li><li>For buffering, set chunk_limit_size to a specified value in megabytes to control the size of each chunk.</li></ul>

How to prevent BufferOverflowError

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