- When pleg channel is full, events are now discarded and count is recorded ([#72709](https://github.com/kubernetes/kubernetes/pull/72709), [@changyaowei](https://github.com/changyaowei))
- Fixed the unexpected `NotReady` status when Node's iops is full if the runtime is dockershim. ([#74389](https://github.com/kubernetes/kubernetes/pull/74389), [@answer1991](https://github.com/answer1991))

- Fixed an issue that could cause the kubelet to incorrectly run concurrent pod reconciliation loops and crash. ([#89055](https://github.com/kubernetes/kubernetes/pull/89055), [@tedyu](https://github.com/tedyu)) [SIG Node]

- DaemonSet controller is now using backoff algorithm to avoid hot loops fighting with kubelet on pod recreation when a particular DaemonSet is misconfigured. ([#65309](https://github.com/kubernetes/kubernetes/pull/65309), [@tnozicka](https://github.com/tnozicka))

  fix some problems, eg with HostPorts. ([#94474](https://github.com/kubernetes/kubernetes/pull/94474), [@danwinship](https://github.com/danwinship)) [SIG Network and Node]
- Increase maximum IOPS of AWS EBS io1 volume to current maximum (64,000). ([#90014](https://github.com/kubernetes/kubernetes/pull/90014), [@jacobmarble](https://github.com/jacobmarble))

## 1.9 Release Notes

## WARNING: etcd backup strongly recommended

Before updating to 1.9, you are strongly recommended to back up your etcd data. Consult the installation procedure you are using (kargo, kops, kube-up, kube-aws, kubeadm etc) for specific advice.

- Fixed an issue that could cause the kubelet to incorrectly run concurrent pod reconciliation loops and crash. ([#89055](https://github.com/kubernetes/kubernetes/pull/89055), [@tedyu](https://github.com/tedyu)) [SIG Node]

- Fixed an issue that could cause the kubelet to incorrectly run concurrent pod reconciliation loops and crash. ([#89055](https://github.com/kubernetes/kubernetes/pull/89055), [@tedyu](https://github.com/tedyu)) [SIG Node]

eck" "crypto/internal/fips140deps/byteorder" "errors" "math/bits" ) const ( // _W is the size in bits of our limbs. _W = bits.UintSize // _S is the size in bytes of our limbs. _S = _W / 8 ) // Note: These functions make many loops over all the words in a Nat. // These loops used to be in assembly, invisible to -race, -asan, and -msan, // but now they are in Go and incur significant overhead in those modes. // To bring the old performance back, we mark all functions that loop // over Nat words with...

- Fixed an issue that could cause the kubelet to incorrectly run concurrent pod reconciliation loops and crash. ([#89055](https://github.com/kubernetes/kubernetes/pull/89055), [@tedyu](https://github.com/tedyu)) [SIG Node]

eck" "crypto/internal/fips140deps/byteorder" "errors" "math/bits" ) const ( // _W is the size in bits of our limbs. _W = bits.UintSize // _S is the size in bytes of our limbs. _S = _W / 8 ) // Note: These functions make many loops over all the words in a Nat. // These loops used to be in assembly, invisible to -race, -asan, and -msan, // but now they are in Go and incur significant overhead in those modes. // To bring the old performance back, we mark all functions that loop // over Nat words with...