b8fe514232
UnschedulableAndUnresolvable
This change adds an additional check in the volumebinding scheduler
plugin to handle PVC with phase ClaimLost which will allow the
scheduler to return UnschedulableAndUnresolvable during the PreFilter
stage and skip the rest of the node evaluation since the PVC is
bound to a PV that does not exist.
Without this change, the FailedScheduling error message would look like:
0/10 nodes are available: 2 node(s) had taint {node/test: true},
that the pod didn't tolerate, 6 node(s) had taint {node/unhealthy: true},
that the pod didn't tolerate, 2 pvc(s) bound to non-existent pv(s)
Which is still evaluating every single node to determine that the pod
cannot be scheduled because the PVC is bound to a non-existent PV
With this change, the FailedScheduling error message would look like:
0/10 nodes are available: 1 persistentvolumeclaim "foo" bound
to non-existent persistentvolume "bar"
Signed-off By: Yibo Zhuang <yibzhuang@gmail.com>
Kubernetes (K8s)
Kubernetes, also known as K8s, is an open source system for managing containerized applications across multiple hosts. It provides basic mechanisms for deployment, maintenance, and scaling of applications.
Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.
Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF). If your company wants to help shape the evolution of technologies that are container-packaged, dynamically scheduled, and microservices-oriented, consider joining the CNCF. For details about who's involved and how Kubernetes plays a role, read the CNCF announcement.
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Try our interactive tutorial.
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The community repository hosts all information about building Kubernetes from source, how to contribute code and documentation, who to contact about what, etc.
If you want to build Kubernetes right away there are two options:
You have a working Go environment.
mkdir -p $GOPATH/src/k8s.io
cd $GOPATH/src/k8s.io
git clone https://github.com/kubernetes/kubernetes
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make
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git clone https://github.com/kubernetes/kubernetes
cd kubernetes
make quick-release
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