Pod in pending state due to Insufficient CPU
On my GCE Kubernetes cluster I can no longer create pods.
Warning FailedScheduling pod (www.caveconditions.com-f1be467e31c7b00bc983fbe5efdbb8eb-438ef) failed to fit in any node
fit failure on node (gke-prod-cluster-default-pool-b39c7f0c-c0ug): Insufficient CPU
Looking at the allocated stats of that node
Non-terminated Pods: (8 in total)
Namespace Name CPU Requests CPU Limits Memory Requests Memory Limits
--------- ---- ------------ ---------- --------------- -------------
default dev.caveconditions.com-n80z8 100m (10%) 0 (0%) 0 (0%) 0 (0%)
default lamp-cnmrc 100m (10%) 0 (0%) 0 (0%) 0 (0%)
default mongo-2-h59ly 200m (20%) 0 (0%) 0 (0%) 0 (0%)
default www.caveconditions.com-tl7pa 100m (10%) 0 (0%) 0 (0%) 0 (0%)
kube-system fluentd-cloud-logging-gke-prod-cluster-default-pool-b39c7f0c-c0ug 100m (10%) 0 (0%) 200Mi (5%) 200Mi (5%)
kube-system kube-dns-v17-qp5la 110m (11%) 110m (11%) 120Mi (3%) 220Mi (5%)
kube-system kube-proxy-gke-prod-cluster-default-pool-b39c7f0c-c0ug 100m (10%) 0 (0%) 0 (0%) 0 (0%)
kube-system kubernetes-dashboard-v1.1.0-orphh 100m (10%) 100m (10%) 50Mi (1%) 50Mi (1%)
Allocated resources:
(Total limits may be over 100%, i.e., overcommitted. More info: http://releases.k8s.io/HEAD/docs/user-guide/compute-resources.md)
CPU Requests CPU Limits Memory Requests Memory Limits
------------ ---------- --------------- -------------
910m (91%) 210m (21%) 370Mi (9%) 470Mi (12%)
Sure I have 91% allocated and can not fit another 10% into it. But is it not possible to over commit resources?
The usage of the server is at about 10% CPU average
Would be a shame if I can not use more ressources.
Yes, the overcommit is currently not supported. It's in planned improvements http://kubernetes.io/docs/user-guide/compute-resources. Related issue on github: https://github.com/kubernetes/kubernetes/issues/168
ps: in theory you can define custom node capacity, but I not sure.
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