Az wrote: > Hari Sekhon wrote: >> Indeed, that would be ok too, since then you can disable the host >> check and rely entirely on service checks so you get all the service >> checks. >> >> Almost as good. Of course it won't say host down, but it will say ping >> failed so you can tell from that. >> >> Another down side is that it will pollute your web interface with >> loads of trivial services, whereas it nice at the moment when all you >> see is the intended service. >> >> It would kind of spoil the web interface in my opinion. >> >> I think I will just wait for this to be done at the developer side, so >> that it is part of the normal configuration options. > You may also find that it will blow out your service check execution > times if you use a ping (service) check of, say, 5 packets @ 1 second > apart. It doesnt sound like much but if you have a large number of hosts > it *might* cause you problems. >
I can most definitely say that it won't. A typical ICMP packet is 64 bytes, all headers included. If you're thinking about load issues, 99% of the time check_icmp, /bin/ping and other ping-like programs use are spent waiting for data from the host being pinged. 0.8% of the time is spent by the system setting up the stack and creating memory pages for the program, and 0.2% is spent sending packets, calculating response-times and things like that. I can imagine that this will cause problems if you're monitoring tens of thousands of hosts, but if you do that without a robust clustering solution or some insanely beefy hardware and network line you'll be toast anyways. check_http, or any other plugin that generally fetches >1KiB of data, possibly decrypts it, and parses a bit of text to be able to return a result are easily a hundred times heavier on both systemload and network traffic than ping checks. -- Andreas Ericsson [EMAIL PROTECTED] OP5 AB www.op5.se Tel: +46 8-230225 Fax: +46 8-230231 ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null