When setting the "Search in" parameter to "Everything" in Solr Search for CentOs/RedHat 6, no results are returned. However, when setting the parameter to "File names only", the search is successful.
The following error might appear in the Portal server Apache log:
PHP Notice: Undefined index: KW_VALUE in /usr/etc/portal/PORTAL/libs/PORTAL.obj.php on line *****, referer: http://**.**.***.**/PORTAL/SEARCHRESULTS.php?tmpl=browse.tmpl.html
Unfortunately, we no longer support CentOs/RedHat 6 or PHP 5. Please, update the Operating System to CentOs/RedHat 7 with PHP 7 installed.