Discovery-file Failed to parse transport address from – 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 analyzes 2 JSON files to detect many errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Discovery-file Failed to parse transport address from ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: discovery, discovery-file, hosts and plugins.

Log Context

Log “[discovery-file] Failed to parse transport address from [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         for (final String host : hostsList) {
            try {
                discoNodes.addAll(resolveDiscoveryNodes(host; 1; transportService;
                    () -> UNICAST_HOST_PREFIX + nodeIdGenerator.incrementAndGet() + "#"));
            } catch (IllegalArgumentException e) {
                logger.warn((Supplier>) () -> new ParameterizedMessage("[discovery-file] Failed to parse transport address from [{}]";
                                                                            host); e);


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