Pod FailedScheduling

执行Kubectl describe得到的错误信息：

  

#kubectl describe pod etcd-test-1000 --namespace=docker--test

Name:                etcd-test-1000

Namespace:        docker--test

Node:                /

Labels:                

Status:                Pending

IP:                

Controllers:        

Containers:

etcd-test-74000:

Image:        192.168.0.76:5000/etcd:2.2.1

Port:        

Command:

/usr/local/bin/etcd

-data-dir

/var/etcd/data

-listen-client-urls

http://127.0.0.1:2379,http://127.0.0.1:4001

-advertise-client-urls

http://127.0.0.1:2379,http://127.0.0.1:4001

-initial-cluster-token

skydns-etcd

QoS Tier:

memory:        Burstable

cpu:        Burstable

Requests:

cpu:        1500m

memory:        50Mi

Environment Variables:

No volumes.

Events:

FirstSeen        LastSeen        Count        From                        SubobjectPath        Type                Reason                        Message

---------        --------        -----        ----                        -------------        --------        ------                        -------

2h                16s                558        {default-scheduler }                        Warning                FailedScheduling        pod (etcd-test-1000) failed to fit in any node

fit failure on node (kube-node79): Node didn't have enough resource: CPU, requested: 1500, used: 1500, capacity: 2000

  

  

  

日志里的错误信息：

Mar 6 14:31:30 kube-master74 kube-scheduler: I0306 14:31:30.155364 20546 event.go:211] Event(api.ObjectReference{Kind:"Pod", Namespace:"docker--test", Name:"etcd-test-1000", UID:"c0cfe539-0220-11e7-b425-525400eb78bc", APIVersion:"v1", ResourceVersion:"5077469", FieldPath:""}): type: 'Warning' reason: 'FailedScheduling' pod (etcd-test-1000) failed to fit in any node

Mar 6 14:31:30 kube-master74 kube-scheduler: fit failure on node (kube-node79): Node didn't have enough resource: CPU, requested: 1500, used: 1500, capacity: 2000

Mar 6 14:31:38 kube-master74 kube-scheduler: E0306 14:31:38.159416 20546 factory.go:355] Error scheduling docker--test etcd-test-1000: pod (etcd-test-1000) failed to fit in any node

Mar 6 14:31:38 kube-master74 kube-scheduler: fit failure on node (kube-node79): Node didn't have enough resource: CPU, requested: 1500, used: 1500, capacity: 2000

Mar 6 14:31:38 kube-master74 kube-scheduler: ; retrying

  

  

代码分析：

plugin/pkg/scheduler/algorithm/predicates/predicates.go

PodFitsResources

  

plugin/pkg/scheduler/schedulercache/node_info.go

addPod

calculateResource