- Reduce event spam during a volume operation error. ([#89796](https://github.com/kubernetes/kubernetes/pull/89796), [@msau42](https://github.com/msau42)) [SIG Storage]


# v1.18.0

[Documentation](https://docs.k8s.io)

## Downloads for v1.18.0

- Apiserver adds two new metrics `etcd_requests_total` and `etcd_request_errors_total` that allow users to monitor requests to etcd storage, split by operation and resource type. ([#117222](https://github.com/kubernetes/kubernetes/pull/117222), [@iyear](https://github.com/iyear)) [SIG API Machinery]

- github.com/google/cadvisor: [8450c56 → v0.37.0](https://github.com/google/cadvisor/compare/8450c56...v0.37.0)
- github.com/json-iterator/go: [v1.1.9 → v1.1.10](https://github.com/json-iterator/go/compare/v1.1.9...v1.1.10)
- github.com/opencontainers/go-digest: [v1.0.0-rc1 → v1.0.0](https://github.com/opencontainers/go-digest/compare/v1.0.0-rc1...v1.0.0)

pkg net/http, type Transport struct, ReadBufferSize int
pkg net/http, type Transport struct, WriteBufferSize int
pkg net, method (*DNSConfigError) Unwrap() error
pkg net, method (*OpError) Unwrap() error
pkg net, type DNSError struct, IsNotFound bool
pkg net, type ListenConfig struct, KeepAlive time.Duration
pkg net/url, method (*Error) Unwrap() error
pkg os/exec, method (*Cmd) String() string

- For raw block CSI volumes on Kubernetes, kubelet was incorrectly calling CSI NodeStageVolume for every single "map" (i.e. raw block "mount") operation for a volume already attached to the node. This PR ensures it is only called once per volume per node. ([#112403](https://github.com/kubernetes/kubernetes/pull/112403), [@akankshakumari393](https://github.com/akankshakumari393)) [SIG Storage]

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pkg net, type MX struct
pkg net, type MX struct, Host string
pkg net, type MX struct, Pref uint16
pkg net, type OpError struct
pkg net, type OpError struct, Addr Addr
pkg net, type OpError struct, Err error
pkg net, type OpError struct, Net string
pkg net, type OpError struct, Op string
pkg net, type PacketConn interface { Close, LocalAddr, ReadFrom, SetDeadline, SetReadDeadline, SetWriteDeadline, WriteTo }