On Wed, Dec 24, 2014 at 01:31:14AM +0100, Jean Weisbuch wrote: > By default, a VServer has its own virtual interface with its > own statistics, its possible to share an interface with the > host but its not the default setup. Last time I checked IP isolation was still the default. Nevertheless, with network namespaces, this should work. Best, Herbert > And if vnstat runs on VServer it should work fine, as the /proc > and /sys on a VServer is "limited" compared to a normal system. > Tools relying on values not present on a VServer guest might > not work out of the box but as vnstat it reads /proc/net/dev, > it seems to be working fine. > Le 24/12/2014 01:20, Laurens Vets a écrit : > >Does that mean that each vserver keeps its own statistics? Because > >vnstat also parses that output: > > > >user@vserver:~$ strace -e trace=file vnstat -tr 2 > >execve("/usr/bin/vnstat", ["vnstat", "-tr", "2"], [/* 12 vars */]) = 0 > >access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or > >directory) > >access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or > >directory) > >open("/etc/ld.so.cache", O_RDONLY) = 3 > >access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or > >directory) > >open("/lib/x86_64-linux-gnu/libm.so.6", O_RDONLY) = 3 > >access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or > >directory) > >open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY) = 3 > >open("/home/user/.vnstatrc", O_RDONLY) = -1 ENOENT (No such file or > >directory) > >open("/etc/vnstat.conf", O_RDONLY) = 3 > >open("/proc/net/dev", O_RDONLY) = 3 > >Sampling eth0 (2 seconds average)...open("/proc/net/dev", > >O_RDONLY) = 3 > >42 packets sampled in 2 seconds > >Traffic average for eth0 > > > > rx 8 kbit/s 10 packets/s > > tx 16 kbit/s 10 packets/s > > > >user@vserver:~$ > > > >If I can just use vnstat that's fine by me, but I was under the > >impression that these statistics were shared? > > > >On 2014-12-23 16:08, Jean Weisbuch wrote: > >>You can read how much data has transited on each network interfaces > >>inside a guest by reading : /proc/net/dev > >>You just have to take the value at first then wait some time, take > >>the new value, substract the first one to the second then divide it by > >>how long in seconds you waited between the two checks. > >> > >>If you want to check from the host, here is a script i made : > >>http://paste.debian.net/137926/ > >> > >>Le 24/12/2014 00:45, Laurens Vets a écrit : > >>>Hi list, > >>> > >>>Is it possible to monitor the bandwidth of 1 particular guest from > >>>inside that guest? > >>> > >>>Basically, I want to run vnstat inside a guest monitoring only the > >>>traffic that guest generates. Is that possible somehow?