This change is to promote local storage capacity isolation feature to GA
At the same time, to allow rootless system disable this feature due to
unable to get root fs, this change introduced a new kubelet config
"localStorageCapacityIsolation". By default it is set to true. For
rootless systems, they can set this configuration to false to disable
the feature. Once it is set, user cannot set ephemeral-storage
request/limit because capacity and allocatable will not be set.
Change-Id: I48a52e737c6a09e9131454db6ad31247b56c000a
This PR focus on utils in scheduler. When to patch pod status or delete pod,
it is better to use an inherited context.
Although this do not take a big effect in preventing goroutine leak, but it is a best practice
Signed-off-by: kerthcet <kerthcet@gmail.com>
Move to use testing PodWrapper where applicable to
reduce duplicating pod creation code and shorten
number of lines.
Adding additional wrapper functions in PodWrapper
to ensure it covers all pod spec under tests.
Signed-off-by: Yibo Zhuang <yibzhuang@gmail.com>
All invokers of GetNonzeroRequestForResource in k/k are either setting
the resource name to CPU/Memory or are checking if the requested
resource name is scalar after the invocation.
Thus, it's unnecessary to check for scalar resource name again.
In the worst case, GetNonzeroRequestForResource returns non-zero
resource quantity which can be ignored by an invoker by running
IsResourceName helpers afterwards.
- replace error with NodeToStatusMap in Preempt() signature
- eliminate podPreemptor interface and expose its functions statelessly
- move logic in scheduler.go#preempt to generic_scheduler.go#Preempt()
- move extender related API from pkg/scheduler/api to pkg/scheduler/apis/extender/v1
- alias extenderv1 to pkg/scheduler/apis/extender/v1
- use NodeScore and NodeScoreList in non-extender logic
With the alpha scheduling queue we move pods from unschedulable to
active on certain events without a backoff. As a result we can cause
starvation issues if high priority pods are in the unschedulable queue.
Implement a backoff mechanism for pods being moved to active.
Closes#56721
