Check default route ping even if it is missing in DNS.

1 files changed, 10 insertions, 2 deletions

diff --git a/sitesummary-nodes b/sitesummary-nodes
index e31e4f9..e9506a8 100755
--- a/sitesummary-nodes
+++ b/sitesummary-nodes
@@ -86,6 +86,15 @@ sub get_default_route {
     return undef;
 }
 
+# Get an IP address, try to resolve it in DNS , and return the IP
+# address if no DNS reverse entry was found.
+sub get_dnsnameorip {
+    my $ipaddr = shift;
+    my $resolved;
+    $resolved = gethostbyaddr(inet_aton($ipaddr), AF_INET);
+    return $resolved || $ipaddr;
+}
+
 sub is_munin_client {
     my $hostid = shift;
     return is_pkg_installed($hostid, "munin-node");
@@ -187,8 +196,7 @@ sub generate_nagios_config {
         # Only check laptops that have the nagios tools installed
         next if is_laptop($hostid) && ! $remote;
 
-        my $defaultroute = gethostbyaddr(inet_aton(get_default_route($hostid)),
-                                         AF_INET);
+        my $defaultroute = get_dnsnameorip(get_default_route($hostid));
 
         # Also check default route host
         if (defined $defaultroute && !exists $hosts{$defaultroute}) {