Alias aliasName doesn t exist – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.14-8.9

Briefly, this error occurs when you’re trying to perform an operation on an Elasticsearch alias that doesn’t exist. The aliasName you’re referring to is not recognized by Elasticsearch. To resolve this issue, you can either create the alias if it doesn’t exist or ensure you’re using the correct alias name. Also, check for any typographical errors in the alias name. If the alias was deleted, you might need to recreate it. Always ensure that the alias exists before performing operations on it.

This guide will help you check for common problems that cause the log ” alias [” + aliasName + “] doesn’t exist ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: alias, metadata, cluster.

Log Context

Log “alias [” + aliasName + “] doesn’t exist” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public DataStreamMetadata withRemovedAlias(String aliasName; String dataStreamName; boolean mustExist) {
 ImmutableOpenMap.Builder dataStreamAliases = ImmutableOpenMap.builder(this.dataStreamAliases);  DataStreamAlias existing = dataStreamAliases.get(aliasName);
 if (mustExist && existing == null) {
 throw new ResourceNotFoundException("alias [" + aliasName + "] doesn't exist");
 } else if (existing == null) {
 return this;
 DataStreamAlias copy = existing.removeDataStream(dataStreamName);
 if (copy == existing) {


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