Can not convert to transport address skipping – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to convert a given address to a transport address, which is necessary for node-to-node communication. This could be due to an incorrect IP address or hostname in the configuration file. To resolve this issue, you can verify the IP addresses or hostnames in your Elasticsearch configuration file. Ensure they are correct and reachable. Also, check your network settings and firewall rules to ensure they are not blocking the communication. If you’re using a cluster, ensure all nodes have the same transport module settings.

This guide will help you check for common problems that cause the log ” can not convert [{}] to transport address. skipping. [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: azure, plugins, discovery-azure-classic, discovery.

Log Context

Log “can not convert [{}] to transport address. skipping. [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                    for (TransportAddress address : addresses) {
                        logger.trace("adding {}; transport_address {}"; networkAddress; address);
                } catch (Exception e) {
                    logger.warn("can not convert [{}] to transport address. skipping. [{}]"; networkAddress; e.getMessage());

        logger.debug("{} addresses added"; dynamicHosts.size());