$OpenBSD: patch-library_Icinga_Application_ApplicationBootstrap_php,v 1.5 2020/06/10 13:14:24 sthen Exp $

Use /var/www/etc/icingaweb2.

Index: library/Icinga/Application/ApplicationBootstrap.php
--- library/Icinga/Application/ApplicationBootstrap.php.orig
+++ library/Icinga/Application/ApplicationBootstrap.php
@@ -159,7 +159,7 @@ abstract class ApplicationBootstrap
             if ($configDir === false) {
                 $configDir = Platform::isWindows()
                     ? $baseDir . '/config'
-                    : '/etc/icingaweb2';
+                    : dirname($baseDir) . '/etc/icingaweb2';
             }
         }
         $canonical = realpath($configDir);
