Failed to resolve host – How to solve related issues

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Failed to resolve host – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Failed to resolve host ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: bulk.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

{{mpg_logstarted}}

Log “failed to resolve host {}” classname is BulkUdpService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 
        InetAddress hostAddressX;
        try {
            hostAddressX = networkService.resolveBindHostAddress(host);
        } catch (IOException e) {
            logger.warn("failed to resolve host {}"; e; host);
            return;
        }
        final InetAddress hostAddress = hostAddressX;

        PortsRange portsRange = new PortsRange(port);




 

Run the Check-Up to get a customized report like this:

Analyze your cluster