/usr/local/etc/rc.d/elasticsearch: WARNING: /usr/local/etc/elasticsearch/elasticsearch.yml is not readable.
I did the same.Before there were patched versions of Elasticsearch there was a simple patch script pushblished on the mentioned page. However, this script didn't change the config files.I can try to reinstall, but I wanted to know if there are any known issues. Maybe there is something faulty with one of the recent upgrades?
However, performing a backup within Zenarmor, uninstalling and re-installing it and then restoring the backup resolved the issue.