On Thu, Aug 3, 2017 at 12:30 AM, <bah...@gmail.com> wrote: > Thanks a lot for the info! > > Is there any workaround ideas until 1.8? Like setting up a cronjob which > periodically checks for pending guaranteed pods and if there are some kills > other QoS pods. >
QoS isn't about whether something goes pending vs. can schedule. It's about the resource guarantees it gets when it's running. The thing you could abuse for what you want is (somewhat confusingly) called the rescheduler <https://kubernetes.io/docs/tasks/administer-cluster/guaranteed-scheduling-critical-addon-pods/>. But it will go away once priority/preemption is beta. And it itself is essentially alpha. I'd suggest to just write your own container that runs in the cluster, looks for pending pods via the Kubernetes API, and then makes a decision about killing (deleting) running pods to make room for the pending pod(s). > > > > > On Wednesday, 2 August 2017 21:56:13 UTC+2, David Oppenheimer wrote: > > On Wed, Aug 2, 2017 at 11:44 AM, Rodrigo Campos <rodr...@gmail.com> > wrote: > > The burstable pod must be reserving something also, and that reservation > (not the limit when there is idle capacity) is making it impossible to > schedule more pods. > > > > > > IIRC, burstable or guaranteed is specially relevant when eviction needs > to be done (node running oom, inode exhaustion, etc.). But it is not > relevant at all to schedule new pods (again, iirc). > > > > > > So, I don't think this can help you. Check the docs, just in case, > anyways :-) > > > > > > I think some sort of priority (like schedule pods on this namespace > before pods on some other) was an idea, but don't know what happened to it > :-) > > > > > > This is coming, currently scheduled for 1.8. Priority will be used in > deciding "who goes pending and who gets to run when there are more pod > request than cluster capacity" and also "who gets evicted when the node > runs low on resources." > > > > > > > > On Wednesday, August 2, 2017, <bah...@gmail.com> wrote: > > > > > > Yes, it is about the resources. The guaranteed pods are pending because > the resources are used up. > > > > What I expect or want to have that the pods that are not guaranteed get > terminated and resources become available when I want to spin up more > guaranteed pods. > > > > > > > > -- > > > > You received this message because you are subscribed to the Google > Groups "Kubernetes user discussion and Q&A" group. > > > > To unsubscribe from this group and stop receiving emails from it, send > an email to kubernetes-users+unsubscr...@googlegroups.com. > > > > To post to this group, send email to kubernetes-users@googlegroups.com. > > > > Visit this group at https://groups.google.com/group/kubernetes-users. > > > > For more options, visit https://groups.google.com/d/optout. > > > > > > > > > > > > > > > > > > -- > > > > You received this message because you are subscribed to the Google > Groups "Kubernetes user discussion and Q&A" group. > > > > To unsubscribe from this group and stop receiving emails from it, send > an email to kubernetes-use...@googlegroups.com. > > > > To post to this group, send email to kubernet...@googlegroups.com. > > > > Visit this group at https://groups.google.com/group/kubernetes-users. > > > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Kubernetes user discussion and Q&A" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to kubernetes-users+unsubscr...@googlegroups.com. > To post to this group, send email to kubernetes-users@googlegroups.com. > Visit this group at https://groups.google.com/group/kubernetes-users. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Kubernetes user discussion and Q&A" group. To unsubscribe from this group and stop receiving emails from it, send an email to kubernetes-users+unsubscr...@googlegroups.com. To post to this group, send email to kubernetes-users@googlegroups.com. Visit this group at https://groups.google.com/group/kubernetes-users. For more options, visit https://groups.google.com/d/optout.
