Initialized – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch has successfully completed its initialization process. It’s not an error message, but rather an informational message indicating that the system is ready to receive and process requests. If you’re seeing this message frequently and unexpectedly, it might indicate that your OpenSearch instance is being restarted repeatedly. To resolve this, check your system logs for any issues causing the restarts, ensure your system has sufficient resources, and verify your OpenSearch configuration settings.

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This guide will help you check for common problems that cause the log ” initialized ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: node.

Log Context

Log “initialized” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            this.namedWriteableRegistry = namedWriteableRegistry;

            logger.debug("initializing HTTP handlers ...");
            actionModule.initRestHandlers(() -> clusterService.state().nodes());

            success = true;
        } catch (IOException ex) {
            throw new OpenSearchException("failed to bind service"; ex);
        } finally {


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