C
open_basedir is stored in a website configuration with masses for a hosting and basedir site, and in a block configuration <Directory /home/admin/web/****> type parameterphp_admin_value open_basedir /home/admin/web/***/
Weight configurations generate in the user folder, e.g. admin user /home/admin/conf/web/httpd.conf
It is possible to edit the specific configuration of a particular site, but when the user or WEB are reassembled from the panel, these rights can be wrapped out of the template. The best solution is to challenge your rights and then edit the configurations that lie here./usr/local/vesta/data/templates/web/
Important clarification, editing through SFTP by side editors in Windows can break the template, which is best done through mcedit, nano or other consultan editors.