A good point Shaheed! I think we could use quota information if the quota is reached before reaching the configured maximum. May be not the other way around.
On Fri, Apr 10, 2015 at 10:41 PM, Shaheedur Haque (shahhaqu) < [email protected]> wrote: > I see that jclouds seems to expose the quota information, so I do agree > this would be good to have. Initially, it could be based on say #CPUs and > then maybe additional checks on memory and disk and so on… > > > > WDYT? > > > > *From:* Reka Thirunavukkarasu [mailto:[email protected]] > *Sent:* 10 April 2015 06:37 > *To:* dev > *Subject:* Re: Quotas and Stratos > > > > Hi Shaheed, > > AFAIK, autoscaler will strict to the min/max specified. We don't currently > have the way of identifying whether actual IaaS has enough quota. If one > partition failed as it is exhausted with the resources, then autoscaler can > try to switch to next partition. However, I'm not sure whether we support > this now. But this would be a nice to have feature. So that autoscaler > won't blindly create instances in the exhausted partition all the time. > > As a workaround, we can configure the min/max to satisfy the actual IaaS > level resources. So that we can assume that the autoscaler will not create > the instances beyond the limit. > > FYI: If the autoscaler move an instance to terminating list, then the > member which is being terminated will not be counted into the currently > available instances. So, whenever autoscaler failed terminate an instance, > then autoscaler can keep on creating new instances in order to satisfy the > min/max as the terminating instance will not be counted. > > > > Thanks, > > Reka > > > > On Fri, Apr 10, 2015 at 9:57 AM, Shaheedur Haque (shahhaqu) < > [email protected]> wrote: > > Hi all, > > > > The IaaS will typically have a quota mechanism, e.g. for virtual CPUs. > What does Stratos do to enforce this, e.g. what happens when the autoscaler > would like to push beyond the configured limit? > > > > Thanks, Shaheed > > > > P.S. Apologies if this has been asked before, but I cannot find a > searchable archive for this mailer…or a newsgroup. > > > > > -- > > Reka Thirunavukkarasu > Senior Software Engineer, > WSO2, Inc.:http://wso2.com, > > Mobile: +94776442007 > > > -- Imesh Gunaratne Technical Lead, WSO2 Committer & PMC Member, Apache Stratos
