Package: ganglia-web
The following ganglia packages are installed: ganglia:~# dpkg -l|grep ganglia ii ganglia-modules-linux 1.3.6-2 amd64 Ganglia extra modules for Linux (IO, filesystems, multicpu) ii ganglia-monitor 3.6.0-7+b1 amd64 cluster monitoring toolkit - node daemon ii ganglia-monitor-python 3.6.0-7 all cluster monitoring toolkit - python modules ii ganglia-webfrontend 3.6.1-3 all cluster monitoring toolkit - web front-end ii libganglia1 3.6.0-7+b1 amd64 cluster monitoring toolkit - shared libraries After dist-upgrading from Debian 8 to Debian 9, the ganglia web interface is not working anymore, it just shows this error message. === START-OF-MESSAGE === Sorry, you do not have access to this resource. "); } try { $dwoo = new Dwoo($conf['dwoo_compiled_dir'], $conf['dwoo_cache_dir']); } catch (Exception $e) { print " There was an error initializing the Dwoo PHP Templating Engine: ". $e->getMessage() . " The compile directory should be owned and writable by the apache user. "; exit; } # Useful for addons. $GHOME = "."; if ($context == "meta" or $context == "control") { $title = "$self ${conf['meta_designator']} Report"; include_once "./header.php"; include_once "./meta_view.php"; } else if ($context == "tree") { $title = "$self ${conf['meta_designator']} Tree"; include_once "./header.php"; include_once "./grid_tree.php"; } else if ($context == "cluster" or $context == "cluster-summary") { if (preg_match('/cluster/i', $clustername)) $title = "$clustername Report"; else $title = "$clustername Cluster Report"; include_once "./header.php"; include_once "./cluster_view.php"; } else if ($context == "physical") { $title = "$clustername Physical View"; include_once "./header.php"; include_once "./physical_view.php"; } else if ($context == "node") { $title = "$hostname Node View"; include_once "./header.php"; include_once "./show_node.php"; } else if ($context == "host") { $title = "$hostname Host Report"; include_once "./header.php"; include_once "./host_view.php"; } else if ($context == "views") { $title = "$viewname view"; include_once "./header.php"; include_once "./views_view.php"; } else if ($context == "compare_hosts") { $title = "Compare Hosts"; include_once "./header.php"; include_once "./compare_hosts.php"; } else if ($context == "decompose_graph") { $title = "Decompose graph"; include_once "./header.php"; include_once "./decompose_graph.php"; } else { $title = "Unknown Context"; print "Unknown Context Error: Have you specified a host but not a cluster?."; } include_once "./footer.php"; ?> ==== END === When searching the web, there where some hints towards a permission problem, but changing the permissions did not help. I also purged and reinstalled ganglia-web and the apache, but it did not help. Do you have any suggests for debugging this issue ?