Collector failed to collect data – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

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Briefly, this error occurs when Elasticsearch is unable to gather the required data due to issues like insufficient permissions, network connectivity problems, or misconfiguration. To resolve this, ensure that the user has the necessary permissions to access the data. Check the network connection between the Elasticsearch cluster and the data source. Also, verify the configuration settings of the Elasticsearch collector to ensure they are correct. If the issue persists, consider restarting the Elasticsearch service or the entire cluster.

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This guide will help you check for common problems that cause the log ” collector [{}] failed to collect data ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “collector [{}] failed to collect data” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                return doCollect(convertNode(timestamp; clusterService.localNode()); interval; clusterState);
        } catch (ElasticsearchTimeoutException e) {
            logger.error("collector [{}] timed out when collecting data: {}"; name(); e.getMessage());
        } catch (Exception e) {
            logger.error((Supplier>) () -> new ParameterizedMessage("collector [{}] failed to collect data"; name()); e);
        return null;

    protected abstract Collection doCollect(MonitoringDoc.Node node; long interval; ClusterState clusterState)


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