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volume recycler: Don't start a new recycler pod if one already exists.
Recycling is a long duration process and when the recycler controller is restarted in the meantime, it should not start a new recycler pod if there is one already running.
This means that the recycler pod must have deterministic name based on name of the recycled PV, we then get name conflicts when creating the pod.
Two things need to be changed:
- recycler controller and recycler plugins must pass the PV.Name to place, where the pod is created. This is most of the patch and it should be pretty straightforward.
- create recycler pod with deterministic name and check "already exists" error.
When at it, remove useless 'resourceVersion' argument and make log messages starting with lowercase.
There is an unit test to check the behavior + there is an e2e test that checks that regular recycling is not broken (it does not try to run two recycler pods in parallel as the recycler is single-threaded now).
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Updaing QoS policy to be at the pod level
Quality of Service will be derived from an entire Pod Spec, instead of being derived from resource specifications of individual resources per-container.
A Pod is `Guaranteed` iff all its containers have limits == requests for all the first-class resources (cpu, memory as of now).
A Pod is `BestEffort` iff requests & limits are not specified for any resource across all containers.
A Pod is `Burstable` otherwise.
Note: Existing pods might be more susceptible to OOM Kills on the node due to this PR! To protect pods from being OOM killed on the node, set `limits` for all resources across all containers in a pod.
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Check status of framework.CheckPodsRunningReady
Check status of framework.CheckPodsRunningReady and fail test if it's false, instead of silently
ignoring the failure.
This doesn't fix whatever is causing the pod not to start in #17523 but it does fail the test as soon as it detects the pod didn't start, instead of allowing the testing to proceed.
cc @kubernetes/sig-testing @spxtr @ixdy @kubernetes/rh-cluster-infra
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Updating CentOS image, adding heat back to the required cli tools.
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Updated the CentOS cloudimage to the latest available, and also added heat to the required list of cli tools. This is an interim step to replacing all the commands with openstackclient.
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Update AWS under the hood doc with ELB SSL annotations
Document #23495. No e2e tests or release notes needed (the other PR is already in the release docs).
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add CIDR allocator for NodeController
This PR:
* use pkg/controller/framework to watch nodes and reduce lists when allocate CIDR for node
* decouple the cidr allocation logic from monitoring status logic
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Wojciech Tyczynski
