Bump
On 01/18/2017 05:16 PM, Francesco Romani wrote: > Hi all, > > > oVirt[1] developer here. Since few weeks I'm proposing patches[2] to > collectd to make it possible to use it in oVirt > > to monitor hosts and vms instead of the current, custom-built oVirt > solution. > > > For accouting purposes, oVirt tracks some total values. For example, we > track and record the total bytes received or > > sent through one network interface, or the total amount of bytes read > from or written to a disk. > > Libvirt returns those totals, example provided below. > > > collectd, however, exports most of the values we need to trackl as > DERIVE type, so we get changes since last value > (https://collectd.org/wiki/index.php/Data_source) > > If neither the client nor the collectd are ever restarted, we can track > the changes, so it is good; but in general oVirt needs a way to be sure > and safe it has the correct > > total (e.g. total bytes through one network interface - if_octets). > > > I had a quick look at the docs and to the existing plugins without much > luck; apologies if I missed something obvious, in that case > > a like to the Fine Manual would be much appreciated :) > > > Thanks and bests, > > > +++ > > > [1] http://www.ovirt.org/ > > [2] https://github.com/collectd/collectd/pull/2103 > > > > +++ > > > (virsh -r domstats, libvirt 2.0.0 - but the concept applies to old APIs > as well > > Example output > > > Domain: 'a2' > state.state=1 > state.reason=1 > cpu.time=35069893576 > cpu.user=4360000000 > cpu.system=4000000000 > balloon.current=4194304 > balloon.maximum=4194304 > vcpu.current=2 > vcpu.maximum=16 > vcpu.0.state=1 > vcpu.0.time=18910000000 > vcpu.0.wait=0 > vcpu.1.state=1 > vcpu.1.time=13630000000 > vcpu.1.wait=0 > net.count=1 > net.0.name=vnet0 > net.0.rx.bytes=65752 > net.0.rx.pkts=413 > net.0.rx.errs=0 > net.0.rx.drop=0 > net.0.tx.bytes=23554 > net.0.tx.pkts=289 > net.0.tx.errs=0 > net.0.tx.drop=0 > block.count=2 > block.0.name=hdc > block.0.path=[expunged] > block.0.rd.reqs=33146 > block.0.rd.bytes=275919200 > block.0.rd.times=787752279 > block.0.wr.reqs=0 > block.0.wr.bytes=0 > block.0.wr.times=0 > block.0.fl.reqs=0 > block.0.fl.times=0 > block.0.allocation=0 > block.0.capacity=1469054976 > block.0.physical=1469059072 > block.1.name=vda > block.1.path=[expunged] > block.1.rd.reqs=129 > block.1.rd.bytes=3215872 > block.1.rd.times=138113797 > block.1.wr.reqs=0 > block.1.wr.bytes=0 > block.1.wr.times=0 > block.1.fl.reqs=0 > block.1.fl.times=0 > block.1.allocation=0 > block.1.capacity=21474836480 > block.1.physical=16777216 > > -- Francesco Romani Red Hat Engineering Virtualization R & D IRC: fromani _______________________________________________ collectd mailing list [email protected] https://mailman.verplant.org/listinfo/collectd
