BTW, we are experimenting with a patch whose intent is to make the memory/CPU stats collection pluggable. We would definitely be interested in pushing this upstream - once we have something working.
On Wednesday 28 May 2014 22:37:32 Imesh Gunaratne wrote: > Great! Thanks for the clarification Chris! > > I just noted following from Docker's article on collecting metrics in LXCs: > "Docker will take care of this, or at least expose hooks to make it more > straightforward. It is one of the reasons why we repeat over and over > “Docker is not production ready yet”" > > On Wed, May 28, 2014 at 9:01 PM, chris snow <chsnow...@gmail.com> wrote: > > Thanks for the confirmation Nirmal. > > > > On Wed, May 28, 2014 at 3:20 PM, Nirmal Fernando <nirmal070...@gmail.com> > > > > wrote: > > > On Wed, May 28, 2014 at 4:49 PM, chris snow <chsnow...@gmail.com> wrote: > > >> Hi Imesh, > > >> > > >> The autoscale policy relates to the cartridge, but on LXC you aren't > > >> monitoring the cartridge value, instead you are monitoring the host. > > >> If the load average hits a threshold because the host is presumably > > >> under duress so the last thing you will want to do is spawn more LXC > > >> instances on the host? > > > > > > Correct! > > > > > >> Cheers, > > >> > > >> Chris > > >> > > >> > > >> > > >> On Wed, May 28, 2014 at 11:16 AM, Imesh Gunaratne <im...@apache.org> > > >> > > >> wrote: > > >> > Hi Chris, > > >> > > > >> > Thanks for the quick response. > > >> > Right, I still don't get why we cannot adjust the threshold values > > >> > and > > >> > fix > > >> > it. > > >> > > > >> > Thanks > > >> > > > >> > > > >> > On Wed, May 28, 2014 at 11:37 AM, chris snow <chsnow...@gmail.com> > > >> > > > >> > wrote: > > >> >> Hi Imesh, > > >> >> > > >> >> I haven't looked into this in any more detail. All I have done is > > >> >> removed > > >> >> those parameters from my auto scaling policy. > > >> >> > > >> >> Many thanks, > > >> >> Chris > > >> >> > > >> >> On 28 May 2014 05:58, "Imesh Gunaratne" <im...@apache.org> wrote: > > >> >>> Hi Chris, > > >> >>> > > >> >>> Were you able to check the memory consumption and load average > > > > values > > > > >> >>> sent to Autoscaler by any chance? > > >> >>> > > >> >>> Thanks > > >> >>> > > >> >>> > > >> >>> On Mon, May 26, 2014 at 6:31 PM, chris snow <chsnow...@gmail.com> > > >> >>> > > >> >>> wrote: > > >> >>>> Hi Lahiru, > > >> >>>> > > >> >>>> It looks like there's some good info here [1]. However, as a > > >> >>>> first > > >> >>>> step, I was wondering whether we should add a note to the wiki to > > >> >>>> recommend not using the memory consumption or load average > > > > parameters > > > > >> >>>> for docker/lxc guests [2]? > > >> >>>> > > >> >>>> Cheers, > > >> >>>> > > >> >>>> Chris > > >> >>>> > > >> >>>> --- > > >> >>>> [1] > > > > http://blog.docker.io/2013/10/gathering-lxc-docker-containers-metrics/ > > > > >> >>>> [2 > > > > https://cwiki.apache.org/confluence/display/STRATOS/4.0.0+Auto-scaling+Gui > > de#id-4.0.0Auto-scalingGuide-memoryConsumptio> > > >> >>>> On Mon, May 26, 2014 at 1:24 PM, Lahiru Sandaruwan < > > > > lahi...@wso2.com> > > > > >> >>>> wrote: > > >> >>>> > Hi Chis. > > >> >>>> > > > >> >>>> > > > >> >>>> > On Mon, May 26, 2014 at 5:27 PM, chris snow <chsnow...@gmail.com > > >> >>>> > > > >> >>>> > wrote: > > >> >>>> >> Hi Guys, > > >> >>>> >> > > >> >>>> >> I noticed on my stratos+openstack+docker installation that > > > > stratos > > > > >> >>>> >> was > > >> >>>> >> getting into a cycle trying to spawn new instances. > > >> >>>> >> > > >> >>>> >> I think this is because load average (and probably memory > > >> >>>> >> consumption) > > >> >>>> >> on lxc/docker instances is the same value as for the host [1]. > > >> >>>> >> > > >> >>>> >> Question: Am I correct in thinking that load average and memory > > >> >>>> >> consumption autoscaling parameters aren't a good idea for > > >> >>>> >> docker > > >> >>>> >> guests? > > >> >>>> > > > >> >>>> > Is there a way to find out the load average and memory > > > > consumption > > > > >> >>>> > of > > >> >>>> > the > > >> >>>> > guest? > > >> >>>> > > > >> >>>> > I think the proper solution is to customize/fix Cartridge agent > > >> >>>> > find > > >> >>>> > out > > >> >>>> > relevant values in these type of environments and publish stats > > > > to > > > > >> >>>> > CEP. > > >> >>>> > > > >> >>>> > Thanks. > > >> >>>> > > > >> >>>> >> Many thanks, > > >> >>>> >> > > >> >>>> >> Chris > > >> >>>> >> > > >> >>>> >> --- > > >> >>>> >> [1] > > > > http://unix.stackexchange.com/questions/132021/is-a-lxc-docker-guest-load-> > > > average-the-same-as-the-hosts-load-average> > > >> >>>> > -- > > >> >>>> > -- > > >> >>>> > Lahiru Sandaruwan > > >> >>>> > Committer and PMC member, Apache Stratos, > > >> >>>> > Senior Software Engineer, > > >> >>>> > WSO2 Inc., http://wso2.com > > >> >>>> > lean.enterprise.middleware > > >> >>>> > > > >> >>>> > email: lahi...@wso2.com cell: (+94) 773 325 954 > > >> >>>> > blog: http://lahiruwrites.blogspot.com/ > > >> >>>> > twitter: http://twitter.com/lahirus > > > > >> >>>> > linked-in: > > http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 > > > > >> >>>> -- > > >> >>>> Check out my professional profile and connect with me on LinkedIn. > > >> >>>> http://lnkd.in/cw5k69 > > >> >>> > > >> >>> -- > > >> >>> Imesh Gunaratne > > >> >>> > > >> >>> Technical Lead, WSO2 > > >> >>> Committer & PPMC Member, Apache Stratos > > >> > > > >> > -- > > >> > Imesh Gunaratne > > >> > > > >> > Technical Lead, WSO2 > > >> > Committer & PPMC Member, Apache Stratos > > >> > > >> -- > > >> Check out my professional profile and connect with me on LinkedIn. > > >> http://lnkd.in/cw5k69 > > > > > > -- > > > Best Regards, > > > Nirmal > > > > > > Nirmal Fernando. > > > PPMC Member & Committer of Apache Stratos, > > > > > > Senior Software Engineer, WSO2 Inc. > > > > > > Blog: http://nirmalfdo.blogspot.com/ > > > > -- > > Check out my professional profile and connect with me on LinkedIn. > > http://lnkd.in/cw5k69
