--- doc/install/linux/install.pl	2018/06/10 00:59:11	1.43
+++ doc/install/linux/install.pl	2018/06/20 12:12:39	1.45
@@ -75,7 +75,7 @@ if (!open(LOG,">>loncapa_install.log"))
           &mt('Stopping execution.')."\n";
     exit;
 } else {
-    print LOG '$Id: install.pl,v 1.43 2018/06/10 00:59:11 raeburn Exp $'."\n";
+    print LOG '$Id: install.pl,v 1.45 2018/06/20 12:12:39 raeburn Exp $'."\n";
 }
 
 #
@@ -564,7 +564,15 @@ sub chkconfig {
         my $version = $1;
         @runlevels = qw/2 3 4 5/;
         @norunlevels = qw/0 1 6/;
-        $checker_bin = '/usr/sbin/sysv-rc-conf';
+        if (($distro =~ /^ubuntu/) && ($version <= 16)) {
+            $checker_bin = '/usr/sbin/sysv-rc-conf';
+        } else {
+            $uses_systemctl{'ntp'} = 1;
+            $uses_systemctl{'mysql'} = 1;
+            $uses_systemctl{'apache'} = 1;
+            $uses_systemctl{'memcached'} = 1;
+            $uses_systemctl{'cups'} = 1;
+        }
         $daemon{'mysql'}  = 'mysql';
         $daemon{'apache'} = 'apache2';
         $daemon{'ntp'}    = 'ntp';
@@ -1522,7 +1530,7 @@ if ($callsub{'firewall'}) {
 }
 
 if ($callsub{'stopsrvcs'}) {
-    &kill_extra_services($distro,$recommended->{'stopsrvcs'});
+    &kill_extra_services($distro,$recommended->{'stopsrvcs'},$uses_systemctl);
 } else {
     &print_and_log(&mt('Skipping stopping unnecessary service ([_1] daemons).',"'cups','memcached'")."\n");
 }
@@ -1709,7 +1717,7 @@ END
 }
 
 sub kill_extra_services {
-    my ($distro,$stopsrvcs) = @_;
+    my ($distro,$stopsrvcs,$uses_systemctl) = @_;
     if (ref($stopsrvcs) eq 'HASH') {
         my @stopping = sort(keys(%{$stopsrvcs}));
         if (@stopping) {
@@ -1740,8 +1748,19 @@ sub kill_extra_services {
                         }
                     }
 	            &print_and_log(&mt('Removing [_1] from startup.',$service)."\n");
-                    if ($distro =~ /^(debian|ubuntu)/) {
-                        &print_and_log(`update-rc.d -f $daemon remove`);
+                    if ($distro =~ /^(?:debian|ubuntu)(\d+)/) {
+                        my $version = $1;
+                        if (($distro =~ /^ubuntu/) && ($version > 16)) {
+                            if (ref($uses_systemctl) eq 'HASH') {
+                                if ($uses_systemctl->{$service}) {
+                                    if (`systemctl is-enabled $service`) {
+                                        &print_and_log(`systemctl disable $service`);
+                                    }
+                                }
+                            }
+                        } else {
+                            &print_and_log(`update-rc.d -f $daemon remove`);
+                        }
                     } else {
                         if (ref($uses_systemctl) eq 'HASH') {
                             if ($uses_systemctl->{$service}) {
@@ -1807,8 +1826,8 @@ sub setup_mysql_permissions {
         }
     }
     if ($usesauth) {
-        @mysql_commands = ("INSERT user (Host, User, ssl_cipher, x509_issuer, x509_subject) VALUES('localhost','www','','','')",
-                         "ALTER USER 'www'\@'localhost' IDENTIFIED BY 'localhostkey'");
+        @mysql_commands = ("INSERT user (Host, User, ssl_cipher, x509_issuer, x509_subject, authentication_string) VALUES('localhost','www','','','','')",
+                         "ALTER USER 'www'\@'localhost' IDENTIFIED WITH mysql_native_password BY 'localhostkey'");
     } elsif ($hasauthcol) {
         @mysql_commands = ("INSERT user (Host, User, Password, ssl_cipher, x509_issuer, x509_subject, authentication_string) VALUES('localhost','www',password('localhostkey'),'','','','');");
     } else {
@@ -1863,7 +1882,7 @@ INSERT db (Host,Db,User,Select_priv,Inse
             }
         }
         if ($got_passwd) {
-            my (@newpass_cmds) = &new_mysql_rootpasswd($newmysqlpass);
+            my (@newpass_cmds) = &new_mysql_rootpasswd($newmysqlpass,$usesauth);
             push(@mysql_commands,@newpass_cmds);
         } else {
             print_and_log(&mt('Failed to get MySQL root password from user input.')."\n");
@@ -1872,7 +1891,6 @@ INSERT db (Host,Db,User,Select_priv,Inse
             if (@mysql_commands) {
                 foreach my $cmd (@mysql_commands) {
                     $dbh->do($cmd) || print $dbh->errstr."\n";
-
                 }
             }
             if (@mysql_lc_commands) {
@@ -1896,7 +1914,7 @@ INSERT db (Host,Db,User,Select_priv,Inse
 sub new_mysql_rootpasswd {
     my ($currmysqlpass,$usesauth) = @_;
     if ($usesauth) {
-        return ("ALTER USER 'root'\@'localhost' IDENTIFIED BY '$currmysqlpass'",
+        return ("ALTER USER 'root'\@'localhost' IDENTIFIED WITH mysql_native_password BY '$currmysqlpass'",
                 "FLUSH PRIVILEGES;");
     } else {
         return ("SET PASSWORD FOR 'root'\@'localhost'=PASSWORD('$currmysqlpass')",