diff --git a/lib/Munin/Plugin/Pgsql.pm b/lib/Munin/Plugin/Pgsql.pm
index 93c18c0c4..276d6564e 100644
--- a/lib/Munin/Plugin/Pgsql.pm
+++ b/lib/Munin/Plugin/Pgsql.pm
@@ -328,8 +328,8 @@ sub Config {
         }
         print "$l.min $self->{graphmin}\n" if (defined $self->{graphmin});
         print "$l.max $self->{graphmax}\n" if (defined $self->{graphmax});
-        print "$l.warning $self->{warning}\n" if (defined $self->{warning});
-        print "$l.critical $self->{critical}\n" if (defined $self->{critical});
+        $self->print_warning_critical("warning", $l);
+        $self->print_warning_critical("critical", $l);
         $firstrow = 0;
     }
 }
@@ -629,4 +629,15 @@ sub wildcard_parameter {
     die "Wildcard base not found in called filename!\n";
 }
 
+sub print_warning_critical {
+    my ($self, $type, $key) = @_;
+    # enable overriding plugin default warning and critical with key specific env variables in plugin-conf.d
+    if (defined $ENV{$key."_".$type}) {
+        print "$key.$type ".$ENV{$key."_".$type}."\n";
+    }
+    elsif (defined $self->{$type}) {
+        print "$key.$type $self->{$type}\n";
+    }
+}
+
 1;
diff --git a/plugins/node.d/postgres_connections_ b/plugins/node.d/postgres_connections_
index f20f6b154..51c682cdc 100755
--- a/plugins/node.d/postgres_connections_
+++ b/plugins/node.d/postgres_connections_
@@ -35,6 +35,9 @@ database configuration.
 Example :
   [postgres_pg91_*]
   env.PGPORT 5432
+  # warn when total connections reaches 900 and crit when we are at 1000, adjust according to your max connections
+  env.total_warning :900
+  env.total_critical :1000
   [postgres_pg92_*]
   env.PGPORT 5432
 
@@ -139,16 +142,29 @@ my $pg = Munin::Plugin::Pgsql->new(
     wildcardfilter => " AND datname=?",
     paramdatabase  => 1,
     configquery    => [
-        "VALUES ('active','Active'),('waiting','Waiting for lock'),('idle','Idle'),('idletransaction','Idle in transaction'),('unknown','Unknown')",
+        "VALUES ('active','Active'),('waiting','Waiting for lock'),('idle','Idle'),('idletransaction','Idle in transaction'),('unknown','Unknown'),('total', 'Total')",
         [
             8.1,
-            "SELECT 'active','Active' UNION ALL SELECT 'idle','Idle' UNION ALL SELECT 'idletransaction','Idle in transaction' UNION ALL SELECT 'unknown','Unknown'",
+            "SELECT 'active','Active' UNION ALL SELECT 'idle','Idle' UNION ALL SELECT 'idletransaction','Idle in transaction' UNION ALL SELECT 'unknown','Unknown' UNION ALL SELECT 'total','Total'" ,
         ],
     ],
     suggestquery =>
         "SELECT datname FROM pg_database WHERE datallowconn AND NOT datistemplate AND NOT datname='postgres' UNION ALL SELECT 'ALL' ORDER BY 1",
-    graphdraw => 'AREA',
-    stack => 1,
+    graphdraw => ['AREA', 'STACK', 'STACK','STACK','STACK','LINE1'],
+    postprocess => \&CountTotal,
+
 );
 
+sub CountTotal {
+    my $pgresult = shift;
+    my $total = 0;
+    my $result = [];
+    foreach my $row (@$pgresult) {
+        $total += $row->[1];
+        push(@{$result}, $row);
+    }
+    push(@$result, ["total", $total]);
+    return $result;
+}
+
 $pg->Process();