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+Guide#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 > -- Imesh Gunaratne Technical Lead, WSO2 Committer & PPMC Member, Apache Stratos
