--- doc/install/linux/install.pl	2013/01/06 23:04:07	1.24
+++ doc/install/linux/install.pl	2016/08/28 16:15:53	1.39
@@ -72,7 +72,7 @@ if (!open(LOG,">>loncapa_install.log"))
           &mt('Stopping execution.')."\n";
     exit;
 } else {
-    print LOG '$Id: install.pl,v 1.24 2013/01/06 23:04:07 raeburn Exp $'."\n";
+    print LOG '$Id: install.pl,v 1.39 2016/08/28 16:15:53 raeburn Exp $'."\n";
 }
 
 #
@@ -330,6 +330,16 @@ sub check_locale {
             print &mt('Failed to open: [_1], default locale not checked.',
                       '/etc/sysconfig/i18n');
         }
+    } elsif ($distro =~ /^(?:rhes|centos|scientific)(\d+)/) {
+        if ($1 >= 7) {
+            if (!open($fh,"</etc/locale.conf")) {
+                print &mt('Failed to open: [_1], default locale not checked.',
+                          '/etc/locale.conf');
+            }
+        } elsif (!open($fh,"</etc/sysconfig/i18n")) {
+            print &mt('Failed to open: [_1], default locale not checked.',
+                      '/etc/sysconfig/i18n');
+        }
     } else {
         if (!open($fh,"</etc/sysconfig/i18n")) {
             print &mt('Failed to open: [_1], default locale not checked.',
@@ -339,13 +349,15 @@ sub check_locale {
     my @data = <$fh>;
     chomp(@data);
     foreach my $item (@data) {
-        if ($item =~ /^\Q$langvar\E=\"([^\"]*)\"/) {
+        if ($item =~ /^\Q$langvar\E=\"?([^\"]*)\"?/) {
             my $default = $1;
             if ($default ne 'en_US.UTF-8') {
                 if ($distro =~ /^debian/) {
-                    $command = 'dpkg-reconfigure locales';
+                    $command = 'locale-gen en_US.UTF-8'."\n".
+                               'update-locale LANG=en_US.UTF-8';
                 } elsif ($distro =~ /^ubuntu/) {
-                    $command = 'sudo set-language-env -E'; 
+                    $command = 'sudo locale-gen en_US.UTF-8'."\n".
+                               'sudo update-locale LANG=en_US.UTF-8';
                 } elsif ($distro =~ /^(suse|sles)/) {
                     $command = 'yast language'; 
                 } else {
@@ -373,8 +385,8 @@ sub check_required {
     unless ($localecmd eq '') {
         return ($distro,$gotprereqs,$localecmd);
     }
-    my ($mysqlon,$mysqlsetup,$dbh,$has_pass,$has_lcdb,%recommended,$downloadstatus,
-        $filetouse,$production,$testing,$apachefw,$tostop);
+    my ($mysqlon,$mysqlsetup,$mysqlrestart,$dbh,$has_pass,$has_lcdb,%recommended,
+        $downloadstatus,$filetouse,$production,$testing,$apachefw,$tostop,$uses_systemctl);
     my $wwwuid = &uid_of_www();
     my $wwwgid = getgrnam('www');
     if (($wwwuid eq '') || ($wwwgid eq '')) {
@@ -386,31 +398,40 @@ sub check_required {
     $mysqlon = &check_mysql_running($distro);
     if ($mysqlon) {
         my $mysql_has_wwwuser = &check_mysql_wwwuser();
-        ($mysqlsetup,$has_pass,$dbh) = 
-            &check_mysql_setup($instdir,$dsn);
-        if ($mysqlsetup eq 'noroot') {
-            $recommended{'mysqlperms'} = 1;
+        ($mysqlsetup,$has_pass,$dbh,$mysql_has_wwwuser) = 
+            &check_mysql_setup($instdir,$dsn,$distro,$mysql_has_wwwuser);
+        if ($mysqlsetup eq 'needsrestart') {
+            $mysqlrestart = '';
+            if ($distro eq 'ubuntu') {
+                $mysqlrestart = 'sudo '; 
+            }
+            $mysqlrestart .= 'service mysql restart';
+            return ($distro,$gotprereqs,$localecmd,$packagecmd,$updatecmd,$installnow,$mysqlrestart);
         } else {
-            unless ($mysql_has_wwwuser) {
+            if ($mysqlsetup eq 'noroot') {
                 $recommended{'mysqlperms'} = 1;
+            } else {
+                unless ($mysql_has_wwwuser) {
+                    $recommended{'mysqlperms'} = 1;
+                }
+            }
+            if ($dbh) {
+                $has_lcdb = &check_loncapa_mysqldb($dbh);
+            }
+            unless ($has_lcdb) {
+                $recommended{'mysql'} = 1;
             }
-        }
-        if ($dbh) {
-            $has_lcdb = &check_loncapa_mysqldb($dbh);
-        }
-        unless ($has_lcdb) {
-            $recommended{'mysql'} = 1;
         }
     }
     ($recommended{'firewall'},$apachefw) = &chkfirewall($distro);
-    ($recommended{'runlevels'},$tostop) = &chkconfig($distro,$instdir);
+    ($recommended{'runlevels'},$tostop,$uses_systemctl) = &chkconfig($distro,$instdir);
     $recommended{'apache'} = &chkapache($distro,$instdir);
     $recommended{'stopsrvcs'} = &chksrvcs($distro,$tostop);
     ($recommended{'download'},$downloadstatus,$filetouse,$production,$testing) 
         = &need_download();
     return ($distro,$gotprereqs,$localecmd,$packagecmd,$updatecmd,$installnow,
-            \%recommended,$dbh,$has_pass,$has_lcdb,$downloadstatus,
-            $filetouse,$production,$testing,$apachefw);
+            $mysqlrestart,\%recommended,$dbh,$has_pass,$has_lcdb,$downloadstatus,
+            $filetouse,$production,$testing,$apachefw,$uses_systemctl);
 }
 
 sub check_mysql_running {
@@ -427,15 +448,32 @@ sub check_mysql_running {
             $process = 'mysqld';
             $proc_owner = 'mysql';
         }
-    }
-    if ($distro =~ /^fedora(\d+)/) {
+    } elsif ($distro =~ /^fedora(\d+)/) {
         if ($1 >= 16) {
             $process = 'mysqld';
             $proc_owner = 'mysql';
             $use_systemctl = 1;
         }
+        if ($1 >= 19) {
+            $mysqldaemon ='mariadb';
+        }
+    } elsif ($distro =~ /^(?:centos|rhes|scientific)(\d+)/) {
+        if ($1 >= 7) {
+            $mysqldaemon ='mariadb';
+            $process = 'mysqld';
+            $proc_owner = 'mysql';
+            $use_systemctl = 1;
+        }
+    } elsif ($distro =~ /^sles(\d+)/) {
+        if ($1 >= 12) {
+            $use_systemctl = 1;
+        }
+    } elsif ($distro =~ /^suse(\d+)/) {
+        if ($1 >= 13) {
+            $use_systemctl = 1;
+        }
     }
-    if (open(PIPE,"ps -ef |grep $process |grep -v grep 2>&1 |")) {
+    if (open(PIPE,"ps -ef |grep $process |grep ^$proc_owner |grep -v grep 2>&1 |")) {
         my $status = <PIPE>;
         close(PIPE);
         chomp($status);
@@ -503,6 +541,20 @@ sub chkconfig {
         if ($distro =~ /^(suse|sles)9/) {
             $daemon{'apache'} = 'apache';
         }
+        if ($distro =~ /^(suse|sles)([\d\.]+)/) {
+            my $name = $1;
+            my $num = $2;
+            if ($num > 11) {
+                $uses_systemctl{'apache'} = 1;
+                if (($name eq 'sles') || ($name eq 'suse' && $num >= 13.2)) {
+                    $uses_systemctl{'mysql'} = 1;
+                    $uses_systemctl{'ntp'} = 1;
+                    $uses_systemctl{'cups'} = 1;
+                    $uses_systemctl{'memcached'} = 1;
+                    $daemon{'ntp'} = 'ntpd';
+                }
+            }
+        }
     } elsif ($distro =~ /^(?:debian|ubuntu)(\d+)/) {
         my $version = $1;
         @runlevels = qw/2 3 4 5/;
@@ -514,7 +566,7 @@ sub chkconfig {
         if (($distro =~ /^ubuntu/) && ($version <= 8)) {
             $daemon{'cups'} = 'cupsys';
         }
-    } elsif ($distro =~ /^(?:fedora)(\d+)/) {
+    } elsif ($distro =~ /^fedora(\d+)/) {
         my $version = $1;
         if ($version >= 15) {
             $uses_systemctl{'ntp'} = 1;
@@ -522,6 +574,21 @@ sub chkconfig {
         if ($version >= 16) {
             $uses_systemctl{'mysql'} = 1;
             $uses_systemctl{'apache'} = 1;
+            $uses_systemctl{'memcached'} = 1;
+            $uses_systemctl{'cups'} = 1;
+        }
+        if ($version >= 19) {
+            $daemon{'mysql'} = 'mariadb';
+        }
+    } elsif ($distro =~ /^(?:centos|rhes|scientific)(\d+)/) {
+        my $version = $1;
+        if ($version >= 7) {
+            $uses_systemctl{'ntp'} = 1;
+            $uses_systemctl{'mysql'} = 1;
+            $uses_systemctl{'apache'} = 1;
+            $uses_systemctl{'memcached'} = 1;
+            $uses_systemctl{'cups'} = 1;
+            $daemon{'mysql'} = 'mariadb';
         }
     }
     my $nocheck;
@@ -544,13 +611,18 @@ sub chkconfig {
     foreach my $type ('apache','mysql','ntp','cups','memcached') {
         my $service = $daemon{$type};
         if ($uses_systemctl{$type}) {
-            if (!-l "/etc/systemd/system/multi-user.target.wants/$service.service") {
-                $needfix{$type} = "systemctl enable $service.service";
+            if (($type eq 'memcached') || ($type eq 'cups')) {
+                if (-l "/etc/systemd/system/multi-user.target.wants/$service.service") {
+                    $tostop{$type} = 1;
+                }
+            } else {
+                if (!-l "/etc/systemd/system/multi-user.target.wants/$service.service") {
+                    $needfix{$type} = "systemctl enable $service.service";
+                }
             }
-            next;
         } else {
             my $command = $checker_bin.' --list '.$service.' 2>/dev/null';
-            if ($type eq 'cups') { 
+            if ($type eq 'cups') {
                 if ($distro =~ /^(?:debian|ubuntu)(\d+)/) {
                     my $version = $1;
                     if (($distro =~ /^ubuntu/) && ($version <= 8)) {
@@ -607,7 +679,7 @@ sub chkconfig {
             }
         }
     }
-    return (\%needfix,\%tostop);
+    return (\%needfix,\%tostop,\%uses_systemctl);
 }
 
 sub chkfirewall {
@@ -649,17 +721,47 @@ sub chkfirewall {
 sub chkapache {
     my ($distro,$instdir) = @_;
     my $fixapache = 1;
-    if ($distro =~ /^(debian|ubuntu)/) {
-        if (!-e "$instdir/debian-ubuntu/loncapa") {
+    if ($distro =~ /^(debian|ubuntu)(\d+)$/) {
+        my $distname = $1;
+        my $version = $2;
+        my ($stdconf,$stdsite);
+        if (($distname eq 'ubuntu') && ($version > 12)) {
+            $stdconf = "$instdir/debian-ubuntu/ubuntu14/loncapa_conf";
+            $stdsite = "$instdir/debian-ubuntu/ubuntu14/loncapa_sites";
+        } else {
+            $stdconf = "$instdir/debian-ubuntu/loncapa"; 
+        }
+        if (!-e $stdconf) {
             $fixapache = 0;
             print &mt('Warning: No LON-CAPA Apache configuration file found for installation check.')."\n"; 
-        } elsif ((-e "/etc/apache2/sites-available/loncapa") && (-e "$instdir/debian-ubuntu/loncapa")) {
-            if (open(PIPE, "diff --brief $instdir/debian-ubuntu/loncapa /etc/apache2/sites-available/loncapa |")) {
-                my $diffres = <PIPE>;
-                close(PIPE);
-                chomp($diffres);
-                unless ($diffres) {
-                    $fixapache = 0;
+        } else {
+            my ($configfile,$sitefile);
+            if (($distname eq 'ubuntu') && ($version > 12)) {
+                $sitefile = '/etc/apache2/sites-available/loncapa';
+                $configfile = "/etc/apache2/conf-available/loncapa";
+            } else {
+                $configfile = "/etc/apache2/sites-available/loncapa";
+            }
+            if (($configfile ne '') && (-e $configfile) && (-e $stdconf))  {
+                if (open(PIPE, "diff --brief $stdconf $configfile |")) {
+                    my $diffres = <PIPE>;
+                    close(PIPE);
+                    chomp($diffres);
+                    unless ($diffres) {
+                        $fixapache = 0;
+                    }
+                }
+            }
+            if ((!$fixapache) && ($distname eq 'ubuntu') && ($version > 12)) {
+                if (($sitefile ne '') && (-e $sitefile) && (-e $stdsite)) {
+                    if (open(PIPE, "diff --brief $stdsite $sitefile |")) {
+                        my $diffres = <PIPE>;
+                        close(PIPE);
+                        chomp($diffres);
+                        unless ($diffres) {
+                            $fixapache = 0;
+                        }
+                    }
                 }
             }
         }
@@ -705,11 +807,15 @@ sub chkapache {
     } else {
         my $configfile = 'httpd.conf';
         if ($distro =~ /^(?:centos|rhes|scientific)(\d+)$/) {
-            if ($1 > 5) {
+            if ($1 >= 7) {
+                $configfile = 'apache2.4/httpd.conf';
+            } elsif ($1 > 5) {
                 $configfile = 'new/httpd.conf';
             }
         } elsif ($distro =~ /^fedora(\d+)$/) {
-            if ($1 > 10) {
+            if ($1 > 17) {
+                $configfile = 'apache2.4/httpd.conf'; 
+            } elsif ($1 > 10) {
                 $configfile = 'new/httpd.conf';
             }
         }
@@ -855,13 +961,36 @@ sub need_download {
 }
 
 sub check_mysql_setup {
-    my ($instdir,$dsn) = @_;
+    my ($instdir,$dsn,$distro,$mysql_has_wwwuser) = @_;
     my ($mysqlsetup,$has_pass);
     my $dbh = DBI->connect($dsn,'root','',{'PrintError'=>0});
     if ($dbh) {
         $mysqlsetup = 'noroot'; 
     } elsif ($DBI::err =~ /1045/) {
         $has_pass = 1;
+    } elsif ($distro =~ /^ubuntu(\d+)$/) {
+        my $version = $1;
+        if ($1 > 12) {
+            print_and_log(&mt('Restarting mysql, please be patient')."\n");
+            if (open (PIPE, "service mysql restart 2>&1 |")) {
+                while (<PIPE>) {
+                    print $_;
+                }
+                close(PIPE);
+            }
+            unless ($mysql_has_wwwuser) {
+                $mysql_has_wwwuser = &check_mysql_wwwuser();
+            }
+            $dbh = DBI->connect($dsn,'root','',{'PrintError'=>0});
+            if ($dbh) {
+                $mysqlsetup = 'noroot';
+            } elsif ($DBI::err =~ /1045/) {
+                $has_pass = 1;
+            } else {
+                $mysqlsetup = 'needsrestart';
+                return ($mysqlsetup,$has_pass,$dbh,$mysql_has_wwwuser);
+            }
+        }
     }
     if ($has_pass) {
         print &mt('You have already set a root password for the MySQL database.')."\n";
@@ -888,11 +1017,11 @@ sub check_mysql_setup {
                 }
             }
         }
-     } elsif ($mysqlsetup ne 'noroot') {
+    } elsif ($mysqlsetup ne 'noroot') {
         print_and_log(&mt('Problem accessing MySQL.')."\n");
         $mysqlsetup = 'rootfail';
     }
-    return ($mysqlsetup,$has_pass,$dbh);
+    return ($mysqlsetup,$has_pass,$dbh,$mysql_has_wwwuser);
 }
 
 sub check_mysql_wwwuser {
@@ -1148,9 +1277,9 @@ my %prompts = &texthash(
 print "\n".&mt('Checking system status ...')."\n";
 
 my $dsn = "DBI:mysql:database=mysql";
-my ($distro,$gotprereqs,$localecmd,$packagecmd,$updatecmd,$installnow,$recommended,
-    $dbh,$has_pass,$has_lcdb,$downloadstatus,$filetouse,$production,
-    $testing,$apachefw) = &check_required($instdir,$dsn);
+my ($distro,$gotprereqs,$localecmd,$packagecmd,$updatecmd,$installnow,$mysqlrestart,
+    $recommended,$dbh,$has_pass,$has_lcdb,$downloadstatus,$filetouse,$production,
+    $testing,$apachefw,$uses_systemctl) = &check_required($instdir,$dsn);
 if ($distro eq '') {
     print "\n".&mt('Linux distribution could not be verified as a supported distribution.')."\n".
           &mt('The following are supported: [_1].',
@@ -1159,6 +1288,13 @@ if ($distro eq '') {
           &mt('Stopping execution.')."\n";
     exit;
 }
+if ($mysqlrestart) {
+    print "\n".&mt('The mysql daemon needs to be restarted using the following command:')."\n".
+          $mysqlrestart."\n\n".
+          &mt('Stopping execution of install.pl script.')."\n".
+          &mt('Please run the install.pl script again, once you have restarted mysql.')."\n";
+    exit;
+}
 if ($localecmd ne '') {
     print "\n".&mt('Although the LON-CAPA application itself is localized for a number of different languages, the default locale language for the Linux OS on which it runs should be US English.')."\n";
     print "\n".&mt('Run the following command from the command line to set the default language for your OS, and then run this LON-CAPA installation set-up script again.')."\n\n".
@@ -1186,8 +1322,8 @@ if (!$gotprereqs) {
                     exit;
                 } else {
                     ($distro,$gotprereqs,$localecmd,$packagecmd,$updatecmd,$installnow,
-                     $recommended,$dbh,$has_pass,$has_lcdb,$downloadstatus,
-                     $filetouse,$production,$testing,$apachefw) = 
+                     $mysqlrestart,$recommended,$dbh,$has_pass,$has_lcdb,$downloadstatus,
+                     $filetouse,$production,$testing,$apachefw,$uses_systemctl) = 
                      &check_required($instdir,$dsn);
                 }
             } else {
@@ -1313,7 +1449,7 @@ if ($callsub{'apache'}) {
     if ($distro =~ /^(suse|sles)/) {
         &copy_apache2_suseconf($instdir);
     } elsif ($distro =~ /^(debian|ubuntu)/) {
-        &copy_apache2_debconf($instdir);
+        &copy_apache2_debconf($instdir,$distro);
     } else {
         &copy_httpd_conf($instdir,$distro);
     }
@@ -1602,7 +1738,17 @@ sub kill_extra_services {
                     if ($distro =~ /^(debian|ubuntu)/) {
                         &print_and_log(`update-rc.d -f $daemon remove`);
                     } else {
-	                &print_and_log(`/sbin/chkconfig --del $service`);
+                        if (ref($uses_systemctl) eq 'HASH') {
+                            if ($uses_systemctl->{$service}) {
+                                if (`systemctl is-enabled $service`) {                          
+                                    &print_and_log(`systemctl disable $service`);
+                                }
+                            } else {
+                                &print_and_log(`/sbin/chkconfig --del $service`);
+                            }
+                        } else {
+	                    &print_and_log(`/sbin/chkconfig --del $service`);
+                        } 
                     }
                 }
             }
@@ -1640,8 +1786,23 @@ CREATE TABLE IF NOT EXISTS metadata (tit
 
 sub setup_mysql_permissions {
     my ($dbh,$has_pass,@mysql_lc_commands) = @_;
-    my $mysqlversion = &get_mysql_version();
-    my @mysql_commands = ("INSERT user (Host, User, Password) VALUES('localhost','www',password('localhostkey'));");
+    my ($mysqlversion,$mysqlsubver,$mysqlname) = &get_mysql_version();
+    my ($usesauth,@mysql_commands);
+    if ($mysqlname =~ /^MariaDB/i) {
+        if ($mysqlversion >= 10.2) {
+            $usesauth = 1;
+        }
+    } else {
+        if (($mysqlversion > 5.7) || (($mysqlversion == 5.7) && ($mysqlsubver > 5))) {
+            $usesauth = 1;
+        }
+    }
+    if ($usesauth) {
+        @mysql_commands = ("INSERT user (Host, User, ssl_cipher, x509_issuer, x509_subject) VALUES('localhost','www','','','')",
+                         "ALTER USER 'www'\@'localhost' IDENTIFIED BY 'localhostkey'");
+    } else {
+        @mysql_commands = ("INSERT user (Host, User, Password) VALUES('localhost','www',password('localhostkey'));");
+    }
     if ($mysqlversion < 4) {
         push (@mysql_commands,"
 INSERT db (Host,Db,User,Select_priv,Insert_priv,Update_priv,Delete_priv,Create_priv,Drop_priv,Grant_priv,References_priv,Index_priv,Alter_priv) VALUES('localhost','loncapa','www','Y','Y','Y','Y','Y','Y','N','Y','Y','Y')");
@@ -1722,23 +1883,28 @@ INSERT db (Host,Db,User,Select_priv,Inse
 }
 
 sub new_mysql_rootpasswd {
-    my ($currmysqlpass) = @_;
-    return ("SET PASSWORD FOR 'root'\@'localhost'=PASSWORD('$currmysqlpass')",
-            "FLUSH PRIVILEGES;");
+    my ($currmysqlpass,$usesauth) = @_;
+    if ($usesauth) {
+        return ("ALTER USER 'root'\@'localhost' IDENTIFIED BY '$currmysqlpass'",
+                "FLUSH PRIVILEGES;");
+    } else {
+        return ("SET PASSWORD FOR 'root'\@'localhost'=PASSWORD('$currmysqlpass')",
+                "FLUSH PRIVILEGES;");
+    }
 }
 
 sub get_mysql_version {
-    my $version;
+    my ($version,$subversion,$name);
     if (open(PIPE," mysql -V |")) {
         my $info = <PIPE>;
         chomp($info);
         close(PIPE);
-        ($version) = ($info =~ /(\d+\.\d+)\.\d+,/);  
+        ($version,$subversion,$name) = ($info =~ /(\d+\.\d+)\.(\d+)\-?(\w*),/);
     } else {
         print &mt('Could not determine which version of MySQL is installed.').
               "\n";
     }
-    return $version;
+    return ($version,$subversion,$name);
 }
 
 ###########################################################
@@ -1752,11 +1918,15 @@ sub copy_httpd_conf {
     my ($instdir,$distro) = @_;
     my $configfile = 'httpd.conf';
     if ($distro =~ /^(?:centos|rhes|scientific)(\d+)$/) {
-        if ($1 > 5) {
+        if ($1 >= 7) {
+            $configfile = 'apache2.4/httpd.conf';
+        } elsif ($1 > 5) {
             $configfile = 'new/httpd.conf';
         }
     } elsif ($distro =~ /^fedora(\d+)$/) {
-        if ($1 > 10) {
+        if ($1 > 17) {
+            $configfile = 'apache2.4/httpd.conf';
+        } elsif ($1 > 10) {
             $configfile = 'new/httpd.conf';
         }
     }
@@ -1776,19 +1946,7 @@ sub copy_httpd_conf {
 #########################################################
 
 sub copy_apache2_debconf {
-    my ($instdir) = @_;
-    print_and_log(&mt('Copying loncapa [_1] config file to [_2] and pointing [_3] to it from sites-enabled.',"'apache2'","'/etc/apache2/sites-available'","'000-default symlink'")."\n");
-    my $apache2_sites_enabled_dir = '/etc/apache2/sites-enabled';
-    my $apache2_sites_available_dir = '/etc/apache2/sites-available';
-    if (-l "$apache2_sites_enabled_dir/000-default") {
-        unlink("$apache2_sites_enabled_dir/000-default");
-    }
-    if (-e "$apache2_sites_available_dir/loncapa") {
-        copy("$apache2_sites_available_dir/loncapa","$apache2_sites_available_dir/loncapa.original");
-    }
-    copy("$instdir/debian-ubuntu/loncapa","$apache2_sites_available_dir/loncapa");
-    chmod(0444,"$apache2_sites_available_dir/loncapa");
-    symlink("$apache2_sites_available_dir/loncapa","$apache2_sites_enabled_dir/000-default");
+    my ($instdir,$distro) = @_;
     my $apache2_mods_enabled_dir = '/etc/apache2/mods-enabled';
     my $apache2_mods_available_dir = '/etc/apache2/mods-available';
     foreach my $module ('headers.load','expires.load') {
@@ -1797,6 +1955,47 @@ sub copy_apache2_debconf {
             print_and_log(&mt('Enabling "[_1]" Apache module.',$module)."\n");
         }
     }
+    my $apache2_sites_enabled_dir = '/etc/apache2/sites-enabled';
+    my $apache2_sites_available_dir = '/etc/apache2/sites-available';
+    my $defaultconfig = "$apache2_sites_enabled_dir/000-default";
+    my ($distname,$version);
+    if ($distro =~ /^(debian|ubuntu)(\d+)$/) {
+        $distname = $1;
+        $version = $2;
+    }
+    if (($distname eq 'ubuntu') && ($version > 12)) {
+        $defaultconfig = "$apache2_sites_enabled_dir/000-default.conf";
+    }
+    if (-l $defaultconfig) {
+        unlink($defaultconfig);
+    }
+    if (($distname eq 'ubuntu') && ($version > 12)) {
+        print_and_log(&mt('Copying loncapa [_1] config file to [_2] and pointing [_3] to it from conf-enabled.',"'apache2'","'/etc/apache2/conf-available'","'loncapa.conf symlink'")."\n");
+        my $apache2_conf_enabled_dir = '/etc/apache2/conf-enabled';
+        my $apache2_conf_available_dir = '/etc/apache2/conf-available';
+        if (-e "$apache2_conf_available_dir/loncapa") {
+            copy("$apache2_conf_available_dir/loncapa","$apache2_conf_available_dir/loncapa.original");
+        }
+        my $defaultconf = $apache2_conf_enabled_dir.'/loncapa.conf';
+        copy("$instdir/debian-ubuntu/ubuntu14/loncapa_conf","$apache2_conf_available_dir/loncapa");
+        chmod(0444,"$apache2_conf_available_dir/loncapa");
+        if (-l $defaultconf) {
+            unlink($defaultconf);
+        }
+        symlink("$apache2_conf_available_dir/loncapa","$defaultconf");
+        print_and_log(&mt('Copying loncapa [_1] site file to [_2] and pointing [_3] to it from sites-enabled.',"'apache2'","'/etc/apache2/sites-available'","'000-default.conf symlink'")."\n");
+        copy("$instdir/debian-ubuntu/ubuntu14/loncapa_site","$apache2_sites_available_dir/loncapa");
+        chmod(0444,"$apache2_sites_available_dir/loncapa");
+        symlink("$apache2_sites_available_dir/loncapa","$defaultconfig");
+    } else {
+        print_and_log(&mt('Copying loncapa [_1] config file to [_2] and pointing [_3] to it from sites-enabled.',"'apache2'","'/etc/apache2/sites-available'","'000-default symlink'")."\n");
+        if (-e "$apache2_sites_available_dir/loncapa") {
+            copy("$apache2_sites_available_dir/loncapa","$apache2_sites_available_dir/loncapa.original");
+        }
+        copy("$instdir/debian-ubuntu/loncapa","$apache2_sites_available_dir/loncapa");
+        chmod(0444,"$apache2_sites_available_dir/loncapa");
+        symlink("$apache2_sites_available_dir/loncapa","$apache2_sites_enabled_dir/000-default");
+    }
     print_and_log("\n");
 }