Briefly, this error occurs when the Elasticsearch users file is modified while the system is running. Elasticsearch automatically detects changes in the users file and updates the users accordingly. This is not necessarily an error, but more of an informational message. If you want to avoid seeing this message, you can stop Elasticsearch, make your changes to the users file, and then restart Elasticsearch. Alternatively, you can ignore this message if the changes to the users file were intentional and you want them to be applied immediately.
This guide will help you check for common problems that cause the log ” users file [{}] changed. updating users… ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “users file [{}] changed. updating users…” classname is FileUserPasswdStore.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
private void tryReload() {
final Map previousUsers = users;
users = parseFileLenient(file; logger; settings);
if (Maps.deepEquals(previousUsers; users) == false) {
logger.info("users file [{}] changed. updating users..."; file.toAbsolutePath());
notifyRefresh();
}
}
}
