mass pinging? stop auto-block on ping -f?

dotd · 05-19-2007, 04:04 PM

Hello,

I am trying to do some pings on several servers of mine and want them to be done as fast as possible, since my script should later run as kinda daemon. Now I am facing that problem, when I use ping -f [ips] then I get that result:

Quote:

ping: cannot flood; minimal interval, allowed for user, is 200ms

Now I wonder where I can turn of that lock that would not allow me to send more than one ping in 200ms (I got root access)?

Mara · 05-19-2007, 04:45 PM

Ping as root will allow you to make a flood. The limit seems to be internal to ping, because the protocol (and implementation) does not have such limitation.

dotd · 05-19-2007, 05:20 PM

So there is no way to do that without being root? Since basically I want to run that script - or rather sayed the script the ping would be part of - as a cronjob...

Tinkster · 05-20-2007, 01:19 AM

You could always give a non-privileged user the right to sudo ping.

But what are you trying to achieve with that ping-flood in the first
place, what is the benefit of it?

Cheers,
Tink

dotd · 05-20-2007, 03:27 AM

would be part of a monitoring script so to say (even though it would not be monitoring only, but doing lotsa stuff)

So there is no where something like:

ping_max_conn = 200

which I simply could turn off or set down to e.g.20?

Mara · 05-20-2007, 02:05 PM

For your usage fping may be better.

dotd · 05-20-2007, 02:47 PM

thx mara

tried that, still the same problem... wouldn´t ping at the rate I want it to do (even when done in round robin principle like fping does), since fping would ping about 50 hosting packages almost at once and then kinda freeze pinging only 1 further per sec as it seems... despite of that fping -f(file) would only work as root wouldn´t it? I am running the script when it´s done as a cronjob, so to say not SU but user...

Mara · 05-23-2007, 04:33 PM

Well...You can run cron jobs for root (so as root). On the other hand, it's probably not the best idea. If the pinging is needed to find out which services are on, have you considered opening/closing a connection instead of ping?

Tinkster · 05-23-2007, 06:17 PM

Quote:

Originally Posted by dotd

thx mara :) tried that, still the same problem... wouldn´t ping at the rate I want it to do (even when done in round robin principle like fping does), since fping would ping about 50 hosting packages almost at once and then kinda freeze pinging only 1 further per sec as it seems... despite of that fping -f(file) would only work as root wouldn´t it? I am running the script when it´s done as a cronjob, so to say not SU but user... :)

I still don't understand why you require ping flooding to prove that
a machine is up. What are you going to do if it isn't?

Cheers,
Tink