Started – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch successfully starts a node or a shard. It’s not an error message but an informational message indicating that a node or shard has been started successfully. If you see this message frequently, it might indicate that your nodes or shards are frequently going down and coming back up. To resolve this, you should investigate the root cause of the instability. This could be due to hardware issues, network problems, or configuration errors. Ensure your system has adequate resources and your OpenSearch configuration is correct.

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

Log Context

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

            writePortsFile("transport"; transport.boundAddress());
            HttpServerTransport http = injector.getInstance(HttpServerTransport.class);
            writePortsFile("http"; http.boundAddress());

        pluginsService.filterPlugins(ClusterPlugin.class).forEach(plugin -> plugin.onNodeStarted(clusterService.localNode()));

        return this;


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