Automatic merge from submit-queue.
add readOnly use case to raw block device proposal
This PR is an addendum to the #1265 to dictate the behavior of the container runtime for read-only devices as specified in the PVCVolumeSource. The precedence already exists for filesystems thus having a consistent behavior for the user. UC9 was added to illustrate the usage.
Automatic merge from submit-queue.
removed deprecated munge script instructions
There is no `hack/update-munge-docs.sh` script. Documentation should not refer to it.
Automatic merge from submit-queue.
Remove Disk Allocatable Evictions
After https://github.com/kubernetes/kubernetes/issues/52336, which uncovered a bug in disk accounting, I have struggled to see why ephemeral-storage allocatable evictions are necessary.
For CPU and Memory allocatable, enforcing allocatable through cgroups provides protection from being starved of compute resources by user pods.
However, for ephemeral-storage it seems that the node-level enforcement mechanisms are able to prevent the node from running out of disk, and thus prevent impact to system daemons.
Additionally, memory usage metrics read from cgroups or statfs are far more reliable than an aggregation of `du` calls which may be collected at different times (as https://github.com/kubernetes/kubernetes/issues/52336 demonstrated).
(As a side note, we should read from the /kubepods cgroup to determine allocatable memory usage)
We should still keep the scheduling aspects of node allocatable for ephemeral storage, as this allows for proper accounting. But I would like to remove enforcement of node allocatable for ephemeral storage.
cc @dchen1107 @derekwaynecarr @jingxu97 @vishh @saad-ali
@kubernetes/sig-node-proposals
Automatic merge from submit-queue.
Update ResourceQuota design doc
**What this PR does:**
1. Update the admission_control_resource_quota.md according to @derekwaynecarr 's PR [Ability to do object count quota for all namespaced resources #54320](https://github.com/kubernetes/kubernetes/pull/54320)
2. fix two nil links
Automatic merge from submit-queue.
Add a contributor cheatsheet
This started as a list of resources I would check on every day, sort of like a portal page from the 90s meets the kubectl cheat sheet. Then I started to ask around what URLs people use day-to-day and then people asked for a copy, so I figured it wouldn't be a bad thing to share:
Contrib-ex discussion and proposal: https://groups.google.com/forum/#!topic/kubernetes-wg-contribex/-azSwMpLsZE
I think this still needs a few things to be useful to more people, perhaps someone with front end experience can make it shiny, in the meantime setting it as your new tab page in the browser has been working for me.
Ryan
Kubernetes Submit Queue
Erin A Boyd
Dr. Stefan Schimanski
Tim Hockin
yanting
Phinoceslee
wangxinxu
xuhuilong
陈宏
Gin
Xingcai Zhang
guineveresaenger
Jorge O. Castro