Re: [Vserver] Wiki : HowTo graph vserver usage with cacti

From: GarconDuMonde <>
Date: Fri 16 Dec 2005 - 00:44:00 GMT
Message-ID: <>

Hash: SHA1


Grzegorz Nosek wrote:
>>the /proc/virtual/<xid>/* contains a bunch of useful
>>information, but for an efficient monitoring system some
>>faster communication methods should be considered ...
>>let me know if there is real demand, and somebody is
>>willing to do the userspace part .. we could then go for
>>netlink or relayfs ...

> I'm interested in monitoring the hell out of the vservers (cpu %,
> loadavg, tokens, memory, network traffic, processes, disk i/o, you
> name it) so I'd be willing to help (please note I haven't used neither
> netlink nor relayfs yet but you learn all your life, don't you?)

me also! i really don't know that much about kernel stuff at all, and it's not
highest on my list of priorities to learn at the moment, but i am keen to
"monitor the hell out of the vservers" (what a great phrase!), ultimately on a
number of different physical hosts. currently, the only monitoring tool i really
have experience with is munin, but cacti has been highly recommended to me, so
i'm very happy to learn it and then try to help get it as good as possible for
vserver usage.

> I have a little patch to collect per-server disk usage stats (somewhat
> like /proc/diskstats) but I dropped it from my kernels during the
> recent debugging frenzy and I'm a bit reluctant to apply it again - a
> bit too intrusive for my taste and I don't know whether it's SMP-safe
> really. If anybody is interested, feel free to drop me a note.

err, did you patch the kernel to collect the usage stats? as i said, i know zero
about kernel stuff, really, but would have thought that hte more patches to the
kernel, the more insecure; and that it would be better to monitor from some
other method.

anyway, hope i can help in some way, hope i dont' slow things down by being stupid.

- --

love and solidarity,


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