Failed to resolve host – How to solve this Elasticsearch error

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Failed to resolve host – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch 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. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: node.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

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

InetAddress[] hostAddresses;
 List profileBindHosts = profileSettings.bindHosts;
 try {
 hostAddresses = networkService.resolveBindHostAddresses(profileBindHosts.toArray(Strings.EMPTY_ARRAY));
 } catch (IOException e) {
 throw new BindTransportException("Failed to resolve host " + profileBindHosts; e);
 }
 if (logger.isDebugEnabled()) {
 String[] addresses = new String[hostAddresses.length];
 for (int i = 0; i < hostAddresses.length; i++) {
 addresses[i] = NetworkAddress.format(hostAddresses[i]);

 

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