scripts not run when SNMP cannot contact the host?

[sejtam]

I have a host from which I obtain some statistics via a cron'ed scp.
I then read that using a local script. I have no SNMP access to that host.

cacti refuses to graph this host apparently because before it runs the scripts it ping/snmp don't give results.

is there any way to override this?

[frosty]

I have the same problem, have you found a solution yet?

[TheWitness]

In version 0.8.6c, simply make sure that the snmp community for that host is blank. This will resolve your problem.

TheWitness

[frosty]

No, it doesn't as far as I can tell, unless you want to create two different cacti-devices for the same host. This since I'm running both SNMP-queries and for example packet-loss(ping) measuring by an external script.

As it is now the packet-loss measuring script will not be executed if the host does not answer an SNMP-query. Therefor I will never see 100% loss in my graphs.

[Jansa]

I use cmd.php as a poller and I removed the (!$host_down) checks. This way I force my system to run the external scripts (availability and packet loss checks). Now I can also control if I want to use unknown values in responce time but at the same time I can raise the packet loss to 100% and availability to 0%. Works for me but I don't yet know about the side effects.

[molshoop]

Where did you disable the host-down check?

[gandalf]

molshoop, I'm afraid, but it is possible that this post is about a backlevel cacti version. I suppose you do have problems with the Downed Host Detection, do you? Please tell us more details about this. There have already been LOTS of posts on this subject; so searching the forums may yield good results.
As a starting point, set Downed Host Detection to SNMP - Reliable.
Reinhard