Could not read realm realmType realmName role mappings file

Could not read realm realmType realmName role mappings file – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

Briefly, this error occurs when Elasticsearch cannot read the role mappings file for a specific realm. This could be due to incorrect file permissions, a missing file, or a corrupted file. To resolve this issue, you can check if the file exists and is in the correct location, ensure the Elasticsearch process has the necessary permissions to read the file, and verify the file’s integrity. If the file is corrupted, you may need to restore it from a backup.

This guide will help you check for common problems that cause the log ” could not read realm [” + realmType + “/” + realmName + “] role mappings file [ ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “could not read realm [” + realmType + “/” + realmName + “] role mappings file [” class name is DnRoleMapper.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 Map> normalizedMap = dnToRoles.entrySet().stream().collect(Collectors.toMap(
 entry -> entry.getKey().toNormalizedString();
 entry -> Collections.unmodifiableList(new ArrayList<>(entry.getValue()))));
 return unmodifiableMap(normalizedMap);
 } catch (IOException | SettingsException e) {
 throw new ElasticsearchException("could not read realm [" + realmType + "/" + realmName + "] role mappings file [" +
 path.toAbsolutePath() + "]"; e);
 }
 }  int mappingsCount() {