Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.
Try OpsGPT now for step-by-step guidance and tailored insights into your OpenSearch operation.
Briefly, this error occurs when OpenSearch cannot find or connect to the specified host. This could be due to incorrect hostname, network issues, or the host being down. To resolve this, first, verify the hostname is correct. If it is, check your network connection and ensure it’s stable. If the network is fine, check if the host server is up and running. If it’s down, you’ll need to restart it. If the issue persists, you may need to check your DNS settings or firewall rules that might be blocking the connection.
For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.
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 OpenSearch concepts: .
Log Context
Log “Failed to resolve host” class name is TcpTransport.java. We extracted the following from OpenSearch source code for those seeking an in-depth context :
InetAddress[] hostAddresses; ListprofileBindHosts = 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]);
