2019SE419 / scheduler

custom scheduler run on k8s

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Custom Scheduler

Init

请使用goproxy

go mod init
go mod download #(or go mod vendor)
go build

predicates & priorities

type predicateFunc func(node *v1.Node, pod *v1.Pod) bool
type priorityFunc func(node *v1.Node, pod *v1.Pod) int

type Scheduler struct {
   clientset  *kubernetes.Clientset
   podQueue   chan *v1.Pod
   nodeLister listersv1.NodeLister
   predicates []predicateFunc
   priorities []priorityFunc
}

predicates和priorities均为两个数组,分别注册相应的函数,以供后续调用。其中具体的函数格式详见predicateFunc or priorityFunc,写好相应格式的函数后即可置入其中,如果你的predicateFunc需要获取相关node的参数,请使用client进行调用,官网有详尽的文档。

submit process

docker build -t ty0207/custom-scheduler .
docker push ty0207/custom-scheduler
# in cluster
vim /scheduler/deployment/deployment.yaml # 修改版本
kubectl apply -f deployment.yaml
# now you can test your workload

测试正确性的相关配置文件在/scheduler/deployment,建议给镜像打上版本,容易回退。一些固定操作已经做好,参考自官方文档

The architecture forked from banzaicloud

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custom scheduler run on k8s


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