Hello
I have recently encountered an issue where ReadonlyREST intermittently rejects authentication requests despite using valid credentials & correctly configured rules. 
The problem seems inconsistent sometimes authentication works fine but at other times; users are unexpectedly denied access. This happens even when there are no changes in configuration or user roles. 
I’ve checked the logs, and there are no clear error messages indicating why the failures occur. Restarting Elasticsearch and clearing the cache sometimes resolves the issue temporarily, but it eventually returns. I suspect it might be related to session handling, index permissions / a conflict with another security layer. 
Checked Could Someone Give me Advice in Issue with Kibana Authentication Using ReadOnlyREST? related to this.
Has anyone faced similar intermittent authentication failures with ReadonlyREST in Talend Training guide ? What debugging steps or configuration tweaks would you recommend?
I’d appreciate any insights on logs to check, potential causes, or solutions that have worked for others.
Thank you !! 