Azure proxy host is unknown. – Elasticsearch Error How To Solve Related Issues

Azure proxy host is unknown. – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up  which can resolve issues causing many errors 


This guide will help you check for common problems that cause the log “Azure proxy host is unknown.” 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: repositories, azure, repository-azure, plugins.

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 discover the cause of many errors and provides suitable actionable recommendations (free tool that requires no installation). 

Log Context

Log”Azure proxy host is unknown.”classname  is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

proxy = null;
  } else {
  try {
  proxy = new Proxy(proxyType; new InetSocketAddress(InetAddress.getByName(proxyHost); proxyPort));
  } catch (final UnknownHostException e) {
  throw new SettingsException("Azure proxy host is unknown."; e);
  this.locationMode = LocationMode.PRIMARY_ONLY;

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Invalid hostname for server: local -views 592,561 ,score 123 Remote host closed connection during handshake during web service communicaiton -views   359,280,score 77

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