地址：https://godoc.org/k8s.io/kubernetes/pkg/kubelet/apis/config#KubeletConfiguration
type KubeletConfiguration struct {
metav1.TypeMeta
// staticPodPath is the path to the directory containing local (static) pods to
// run, or the path to a single static pod file.
StaticPodPath string
// syncFrequency is the max period between synchronizing running
// containers and config
SyncFrequency metav1.Duration
// fileCheckFrequency is the duration between checking config files for
// new data
FileCheckFrequency metav1.Duration
// httpCheckFrequency is the duration between checking http for new data
HTTPCheckFrequency metav1.Duration
// staticPodURL is the URL for accessing static pods to run
StaticPodURL string
// staticPodURLHeader is a map of slices with HTTP headers to use when accessing the podURL
StaticPodURLHeader map[string][]string
// address is the IP address for the Kubelet to serve on (set to 0.0.0.0
// for all interfaces)
Address string
// port is the port for the Kubelet to serve on.
Port int32
// readOnlyPort is the read-only port for the Kubelet to serve on with
// no authentication/authorization (set to 0 to disable)
ReadOnlyPort int32
// tlsCertFile is the file containing x509 Certificate for HTTPS. (CA cert,
// if any, concatenated after server cert). If tlsCertFile and
// tlsPrivateKeyFile are not provided, a self-signed certificate
// and key are generated for the public address and saved to the directory
// passed to the Kubelet's --cert-dir flag.
TLSCertFile string
// tlsPrivateKeyFile is the file containing x509 private key matching tlsCertFile
TLSPrivateKeyFile string
// TLSCipherSuites is the list of allowed cipher suites for the server.
// Values are from tls package constants (https://golang.org/pkg/crypto/tls/#pkg-constants).
TLSCipherSuites []string
// TLSMinVersion is the minimum TLS version supported.
// Values are from tls package constants (https://golang.org/pkg/crypto/tls/#pkg-constants).
TLSMinVersion string
// rotateCertificates enables client certificate rotation. The Kubelet will request a
// new certificate from the certificates.k8s.io API. This requires an approver to approve the
// certificate signing requests. The RotateKubeletClientCertificate feature
// must be enabled.
RotateCertificates bool
// serverTLSBootstrap enables server certificate bootstrap. Instead of self
// signing a serving certificate, the Kubelet will request a certificate from
// the certificates.k8s.io API. This requires an approver to approve the
// certificate signing requests. The RotateKubeletServerCertificate feature
// must be enabled.
ServerTLSBootstrap bool
// authentication specifies how requests to the Kubelet's server are authenticated
Authentication KubeletAuthentication
// authorization specifies how requests to the Kubelet's server are authorized
Authorization KubeletAuthorization
// registryPullQPS is the limit of registry pulls per second.
// Set to 0 for no limit.
RegistryPullQPS int32
// registryBurst is the maximum size of bursty pulls, temporarily allows
// pulls to burst to this number, while still not exceeding registryPullQPS.
// Only used if registryPullQPS > 0.
RegistryBurst int32
// eventRecordQPS is the maximum event creations per second. If 0, there
// is no limit enforced.
EventRecordQPS int32
// eventBurst is the maximum size of a burst of event creations, temporarily
// allows event creations to burst to this number, while still not exceeding
// eventRecordQPS. Only used if eventRecordQPS > 0.
EventBurst int32
// enableDebuggingHandlers enables server endpoints for log collection
// and local running of containers and commands
EnableDebuggingHandlers bool
// enableContentionProfiling enables lock contention profiling, if enableDebuggingHandlers is true.
EnableContentionProfiling bool
// healthzPort is the port of the localhost healthz endpoint (set to 0 to disable)
HealthzPort int32
// healthzBindAddress is the IP address for the healthz server to serve on
HealthzBindAddress string
// oomScoreAdj is The oom-score-adj value for kubelet process. Values
// must be within the range [-1000, 1000].
OOMScoreAdj int32
// clusterDomain is the DNS domain for this cluster. If set, kubelet will
// configure all containers to search this domain in addition to the
// host's search domains.
ClusterDomain string
// clusterDNS is a list of IP addresses for a cluster DNS server. If set,
// kubelet will configure all containers to use this for DNS resolution
// instead of the host's DNS servers.
ClusterDNS []string
// streamingConnectionIdleTimeout is the maximum time a streaming connection
// can be idle before the connection is automatically closed.
StreamingConnectionIdleTimeout metav1.Duration
// nodeStatusUpdateFrequency is the frequency that kubelet computes node
// status. If node lease feature is not enabled, it is also the frequency that
// kubelet posts node status to master. In that case, be cautious when
// changing the constant, it must work with nodeMonitorGracePeriod in nodecontroller.
NodeStatusUpdateFrequency metav1.Duration
// nodeStatusReportFrequency is the frequency that kubelet posts node
// status to master if node status does not change. Kubelet will ignore this
// frequency and post node status immediately if any change is detected. It is
// only used when node lease feature is enabled.
NodeStatusReportFrequency metav1.Duration
// nodeLeaseDurationSeconds is the duration the Kubelet will set on its corresponding Lease.
NodeLeaseDurationSeconds int32
// imageMinimumGCAge is the minimum age for an unused image before it is
// garbage collected.
ImageMinimumGCAge metav1.Duration
// imageGCHighThresholdPercent is the percent of disk usage after which
// image garbage collection is always run. The percent is calculated as
// this field value out of 100.
ImageGCHighThresholdPercent int32
// imageGCLowThresholdPercent is the percent of disk usage before which
// image garbage collection is never run. Lowest disk usage to garbage
// collect to. The percent is calculated as this field value out of 100.
ImageGCLowThresholdPercent int32
// How frequently to calculate and cache volume disk usage for all pods
VolumeStatsAggPeriod metav1.Duration
// KubeletCgroups is the absolute name of cgroups to isolate the kubelet in
KubeletCgroups string
// SystemCgroups is absolute name of cgroups in which to place
// all non-kernel processes that are not already in a container. Empty
// for no container. Rolling back the flag requires a reboot.
SystemCgroups string
// CgroupRoot is the root cgroup to use for pods.
// If CgroupsPerQOS is enabled, this is the root of the QoS cgroup hierarchy.
CgroupRoot string
// Enable QoS based Cgroup hierarchy: top level cgroups for QoS Classes
// And all Burstable and BestEffort pods are brought up under their
// specific top level QoS cgroup.
CgroupsPerQOS bool
// driver that the kubelet uses to manipulate cgroups on the host (cgroupfs or systemd)
CgroupDriver string
// CPUManagerPolicy is the name of the policy to use.
// Requires the CPUManager feature gate to be enabled.
CPUManagerPolicy string
// CPU Manager reconciliation period.
// Requires the CPUManager feature gate to be enabled.
CPUManagerReconcilePeriod metav1.Duration
// TopologyManagerPolicy is the name of the policy to use.
// Policies other than "none" require the TopologyManager feature gate to be enabled.
TopologyManagerPolicy string
// Map of QoS resource reservation percentages (memory only for now).
// Requires the QOSReserved feature gate to be enabled.
QOSReserved map[string]string
// runtimeRequestTimeout is the timeout for all runtime requests except long running
// requests - pull, logs, exec and attach.
RuntimeRequestTimeout metav1.Duration
// hairpinMode specifies how the Kubelet should configure the container
// bridge for hairpin packets.
// Setting this flag allows endpoints in a Service to loadbalance back to
// themselves if they should try to access their own Service. Values:
// "promiscuous-bridge": make the container bridge promiscuous.
// "hairpin-veth": set the hairpin flag on container veth interfaces.
// "none": do nothing.
// Generally, one must set --hairpin-mode=hairpin-veth to achieve hairpin NAT,
// because promiscuous-bridge assumes the existence of a container bridge named cbr0.
HairpinMode string
// maxPods is the number of pods that can run on this Kubelet.
MaxPods int32
// The CIDR to use for pod IP addresses, only used in standalone mode.
// In cluster mode, this is obtained from the master.
PodCIDR string
// The maximum number of processes per pod. If -1, the kubelet defaults to the node allocatable pid capacity.
PodPidsLimit int64
// ResolverConfig is the resolver configuration file used as the basis
// for the container DNS resolution configuration.
ResolverConfig string
// cpuCFSQuota enables CPU CFS quota enforcement for containers that
// specify CPU limits
CPUCFSQuota bool
// CPUCFSQuotaPeriod sets the CPU CFS quota period value, cpu.cfs_period_us, defaults to 100ms
CPUCFSQuotaPeriod metav1.Duration
// maxOpenFiles is Number of files that can be opened by Kubelet process.
MaxOpenFiles int64
// contentType is contentType of requests sent to apiserver.
ContentType string
// kubeAPIQPS is the QPS to use while talking with kubernetes apiserver
KubeAPIQPS int32
// kubeAPIBurst is the burst to allow while talking with kubernetes
// apiserver
KubeAPIBurst int32
// serializeImagePulls when enabled, tells the Kubelet to pull images one at a time.
SerializeImagePulls bool
// Map of signal names to quantities that defines hard eviction thresholds. For example: {"memory.available": "300Mi"}.
EvictionHard map[string]string
// Map of signal names to quantities that defines soft eviction thresholds. For example: {"memory.available": "300Mi"}.
EvictionSoft map[string]string
// Map of signal names to quantities that defines grace periods for each soft eviction signal. For example: {"memory.available": "30s"}.
EvictionSoftGracePeriod map[string]string
// Duration for which the kubelet has to wait before transitioning out of an eviction pressure condition.
EvictionPressureTransitionPeriod metav1.Duration
// Maximum allowed grace period (in seconds) to use when terminating pods in response to a soft eviction threshold being met.
EvictionMaxPodGracePeriod int32
// Map of signal names to quantities that defines minimum reclaims, which describe the minimum
// amount of a given resource the kubelet will reclaim when performing a pod eviction while
// that resource is under pressure. For example: {"imagefs.available": "2Gi"}
EvictionMinimumReclaim map[string]string
// podsPerCore is the maximum number of pods per core. Cannot exceed MaxPods.
// If 0, this field is ignored.
PodsPerCore int32
// enableControllerAttachDetach enables the Attach/Detach controller to
// manage attachment/detachment of volumes scheduled to this node, and
// disables kubelet from executing any attach/detach operations
EnableControllerAttachDetach bool
// protectKernelDefaults, if true, causes the Kubelet to error if kernel
// flags are not as it expects. Otherwise the Kubelet will attempt to modify
// kernel flags to match its expectation.
ProtectKernelDefaults bool
// If true, Kubelet ensures a set of iptables rules are present on host.
// These rules will serve as utility for various components, e.g. kube-proxy.
// The rules will be created based on IPTablesMasqueradeBit and IPTablesDropBit.
MakeIPTablesUtilChains bool
// iptablesMasqueradeBit is the bit of the iptables fwmark space to mark for SNAT
// Values must be within the range [0, 31]. Must be different from other mark bits.
// Warning: Please match the value of the corresponding parameter in kube-proxy.
// TODO: clean up IPTablesMasqueradeBit in kube-proxy
IPTablesMasqueradeBit int32
// iptablesDropBit is the bit of the iptables fwmark space to mark for dropping packets.
// Values must be within the range [0, 31]. Must be different from other mark bits.
IPTablesDropBit int32
// featureGates is a map of feature names to bools that enable or disable alpha/experimental
// features. This field modifies piecemeal the built-in default values from
// "k8s.io/kubernetes/pkg/features/kube_features.go".
FeatureGates map[string]bool
// Tells the Kubelet to fail to start if swap is enabled on the node.
FailSwapOn bool
// A quantity defines the maximum size of the container log file before it is rotated. For example: "5Mi" or "256Ki".
ContainerLogMaxSize string
// Maximum number of container log files that can be present for a container.
ContainerLogMaxFiles int32
// ConfigMapAndSecretChangeDetectionStrategy is a mode in which config map and secret managers are running.
ConfigMapAndSecretChangeDetectionStrategy ResourceChangeDetectionStrategy
// A comma separated whitelist of unsafe sysctls or sysctl patterns (ending in *).
// Unsafe sysctl groups are kernel.shm*, kernel.msg*, kernel.sem, fs.mqueue.*, and net.*.
// These sysctls are namespaced but not allowed by default. For example: "kernel.msg*,net.ipv4.route.min_pmtu"
// +optional
AllowedUnsafeSysctls []string
// A set of ResourceName=ResourceQuantity (e.g. cpu=200m,memory=150G,pid=100) pairs
// that describe resources reserved for non-kubernetes components.
// Currently only cpu and memory are supported.
// See http://kubernetes.io/docs/user-guide/compute-resources for more detail.
SystemReserved map[string]string
// A set of ResourceName=ResourceQuantity (e.g. cpu=200m,memory=150G,pid=100) pairs
// that describe resources reserved for kubernetes system components.
// Currently cpu, memory and local ephemeral storage for root file system are supported.
// See http://kubernetes.io/docs/user-guide/compute-resources for more detail.
KubeReserved map[string]string
// This flag helps kubelet identify absolute name of top level cgroup used to enforce `SystemReserved` compute resource reservation for OS system daemons.
// Refer to [Node Allocatable](https://git.k8s.io/community/contributors/design-proposals/node/node-allocatable.md) doc for more information.
SystemReservedCgroup string
// This flag helps kubelet identify absolute name of top level cgroup used to enforce `KubeReserved` compute resource reservation for Kubernetes node system daemons.
// Refer to [Node Allocatable](https://git.k8s.io/community/contributors/design-proposals/node/node-allocatable.md) doc for more information.
KubeReservedCgroup string
// This flag specifies the various Node Allocatable enforcements that Kubelet needs to perform.
// This flag accepts a list of options. Acceptable options are `pods`, `system-reserved` & `kube-reserved`.
// Refer to [Node Allocatable](https://git.k8s.io/community/contributors/design-proposals/node/node-allocatable.md) doc for more information.
EnforceNodeAllocatable []string
}