add compatibility if rrdinfo doesn't work as expected

1 files changed, 17 insertions, 3 deletions

diff --git a/inc/html.inc.php b/inc/html.inc.php
index 6ab84d9..c524e46 100644
--- a/inc/html.inc.php
+++ b/inc/html.inc.php
@@ -69,11 +69,25 @@ function host_summary($hosts) {
         foreach($hosts as $host) {
                 collectd_flush(sprintf('%s/load/load', $host));
                 $rrd_info = $rrd->rrd_info($CONFIG['datadir'].'/'.$host.'/load/load.rrd');
+
+                # ignore if file does not exist
                 if (!$rrd_info)
                         continue;
-                printf('<tr><th><a href="%s/host.php?h=%s">%s</a></th><td>%.2f</td><td>%.2f</td><td>%.2f</td></tr>'."\n",
-                $CONFIG['weburl'],$host, $host,
-                $rrd_info["ds[shortterm].last_ds"], $rrd_info["ds[midterm].last_ds"], $rrd_info["ds[longterm].last_ds"]);
+
+                printf('<tr><th><a href="%s/host.php?h=%s">%s</a></th>',
+                        $CONFIG['weburl'],$host, $host);
+
+                if (isset($rrd_info['ds[shortterm].last_ds']) &&
+                        isset($rrd_info['ds[midterm].last_ds']) &&
+                        isset($rrd_info['ds[longterm].last_ds'])) {
+
+                        printf('<td>%.2f</td><td>%.2f</td><td>%.2f</td>',
+                                $rrd_info['ds[shortterm].last_ds'],
+                                $rrd_info['ds[midterm].last_ds'],
+                                $rrd_info['ds[longterm].last_ds']);
+                }
+
+                print "</tr>\n";
         }
 
         echo "</table>\n";