kubeadm config print init-defaults [flags]
此命令打印对象，例如用于'kubeadm init'的默认init配置。
选项
--component-configs stringSlice
组件配置API对象的逗号分隔列表，以打印其默认值。可用值：[KubeProxyConfiguration KubeletConfiguration]。如果未设置此标志，则不会打印任何组件配置。
-h，--help
初始化默认值的帮助
官网:https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm-init/
https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta2
kubeadm1.13+ 支持的configuration types：
apiVersion: kubeadm.k8s.io/v1beta1 kind: InitConfiguration apiVersion: kubeadm.k8s.io/v1beta1 kind: ClusterConfiguration apiVersion: kubelet.config.k8s.io/v1beta1 kind: KubeletConfiguration apiVersion: kubeproxy.config.k8s.io/v1alpha1 kind: KubeProxyConfiguration apiVersion: kubeadm.k8s.io/v1beta1 kind: JoinConfiguration
不带参数
[root@hadoop01 linyouyi]# kubeadm config print init-defaults
apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
- system:bootstrappers:kubeadm:default-node-token
token: abcdef.0123456789abcdef
ttl: 24h0m0s
usages:
- signing
- authentication
kind: InitConfiguration
localAPIEndpoint:
advertiseAddress: 1.2.3.4
bindPort: 6443
nodeRegistration:
criSocket: /var/run/dockershim.sock
name: hadoop01
taints:
- effect: NoSchedule
key: node-role.kubernetes.io/master
---
apiServer:
timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.16.0
networking:
dnsDomain: cluster.local
serviceSubnet: 10.96.0.0/12
scheduler: {}
KubeletConfiguration
[root@hadoop01 linyouyi]# kubeadm config print init-defaults --component-configs KubeletConfiguration
apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
- system:bootstrappers:kubeadm:default-node-token
token: abcdef.0123456789abcdef
ttl: 24h0m0s
usages:
- signing
- authentication
kind: InitConfiguration
localAPIEndpoint:
advertiseAddress: 1.2.3.4
bindPort: 6443
nodeRegistration:
criSocket: /var/run/dockershim.sock
name: hadoop01
taints:
- effect: NoSchedule
key: node-role.kubernetes.io/master
---
apiServer:
timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.16.0
networking:
dnsDomain: cluster.local
serviceSubnet: 10.96.0.0/12
scheduler: {}
---
address: 0.0.0.0
apiVersion: kubelet.config.k8s.io/v1beta1
authentication:
anonymous:
enabled: false
webhook:
cacheTTL: 2m0s
enabled: true
x509:
clientCAFile: /etc/kubernetes/pki/ca.crt
authorization:
mode: Webhook
webhook:
cacheAuthorizedTTL: 5m0s
cacheUnauthorizedTTL: 30s
cgroupDriver: cgroupfs
cgroupsPerQOS: true
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
configMapAndSecretChangeDetectionStrategy: Watch
containerLogMaxFiles: 5
containerLogMaxSize: 10Mi
contentType: application/vnd.kubernetes.protobuf
cpuCFSQuota: true
cpuCFSQuotaPeriod: 100ms
cpuManagerPolicy: none
cpuManagerReconcilePeriod: 10s
enableControllerAttachDetach: true
enableDebuggingHandlers: true
enforceNodeAllocatable:
- pods
eventBurst: 10
eventRecordQPS: 5
evictionHard:
imagefs.available: 15%
memory.available: 100Mi
nodefs.available: 10%
nodefs.inodesFree: 5%
evictionPressureTransitionPeriod: 5m0s
failSwapOn: true
fileCheckFrequency: 20s
hairpinMode: promiscuous-bridge
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 20s
imageGCHighThresholdPercent: 85
imageGCLowThresholdPercent: 80
imageMinimumGCAge: 2m0s
iptablesDropBit: 15
iptablesMasqueradeBit: 14
kind: KubeletConfiguration
kubeAPIBurst: 10
kubeAPIQPS: 5
makeIPTablesUtilChains: true
maxOpenFiles: 1000000
maxPods: 110
nodeLeaseDurationSeconds: 40
nodeStatusReportFrequency: 1m0s
nodeStatusUpdateFrequency: 10s
oomScoreAdj: -999
podPidsLimit: -1
port: 10250
registryBurst: 10
registryPullQPS: 5
resolvConf: /etc/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 2m0s
serializeImagePulls: true
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 4h0m0s
syncFrequency: 1m0s
topologyManagerPolicy: none
volumeStatsAggPeriod: 1m0s
KubeProxyConfiguration
[root@hadoop01 linyouyi]# kubeadm config print init-defaults --component-configs KubeProxyConfiguration
apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
- system:bootstrappers:kubeadm:default-node-token
token: abcdef.0123456789abcdef
ttl: 24h0m0s
usages:
- signing
- authentication
kind: InitConfiguration
localAPIEndpoint:
advertiseAddress: 1.2.3.4
bindPort: 6443
nodeRegistration:
criSocket: /var/run/dockershim.sock
name: hadoop01
taints:
- effect: NoSchedule
key: node-role.kubernetes.io/master
---
apiServer:
timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.16.0
networking:
dnsDomain: cluster.local
serviceSubnet: 10.96.0.0/12
scheduler: {}
---
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
clientConnection:
acceptContentTypes: ""
burst: 10
contentType: application/vnd.kubernetes.protobuf
kubeconfig: /var/lib/kube-proxy/kubeconfig.conf
qps: 5
clusterCIDR: ""
configSyncPeriod: 15m0s
conntrack:
maxPerCore: 32768
min: 131072
tcpCloseWaitTimeout: 1h0m0s
tcpEstablishedTimeout: 24h0m0s
enableProfiling: false
healthzBindAddress: 0.0.0.0:10256
hostnameOverride: ""
iptables:
masqueradeAll: false
masqueradeBit: 14
minSyncPeriod: 0s
syncPeriod: 30s
ipvs:
excludeCIDRs: null
minSyncPeriod: 0s
scheduler: ""
strictARP: false
syncPeriod: 30s
kind: KubeProxyConfiguration
metricsBindAddress: 127.0.0.1:10249
mode: ""
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""
udpIdleTimeout: 250ms
winkernel:
enableDSR: false
networkName: ""
sourceVip: ""
https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta2
这是单个YAML文件的完整填充示例，其中包含在kubeadm init运行期间要使用的多种配置类型。
apiVersion: kubeadm.k8s.io/v1beta2
kind: InitConfiguration
bootstrapTokens:
- token: "9a08jv.c0izixklcxtmnze7"
description: "kubeadm bootstrap token"
ttl: "24h"
- token: "783bde.3f89s0fje9f38fhf"
description: "another bootstrap token"
usages:
- authentication
- signing
groups:
- system:bootstrappers:kubeadm:default-node-token
nodeRegistration:
name: "ec2-10-100-0-1"
criSocket: "/var/run/dockershim.sock"
taints:
- key: "kubeadmNode"
value: "master"
effect: "NoSchedule"
kubeletExtraArgs:
cgroup-driver: "cgroupfs"
ignorePreflightErrors:
- IsPrivilegedUser
localAPIEndpoint:
advertiseAddress: "10.100.0.1"
bindPort: 6443
certificateKey: "e6a2eb8581237ab72a4f494f30285ec12a9694d750b9785706a83bfcbbbd2204"
---
apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
etcd:
# one of local or external
local:
imageRepository: "k8s.gcr.io"
imageTag: "3.2.24"
dataDir: "/var/lib/etcd"
extraArgs:
listen-client-urls: "http://10.100.0.1:2379"
serverCertSANs:
- "ec2-10-100-0-1.compute-1.amazonaws.com"
peerCertSANs:
- "10.100.0.1"
# external:
# endpoints:
# - "10.100.0.1:2379"
# - "10.100.0.2:2379"
# caFile: "/etcd/kubernetes/pki/etcd/etcd-ca.crt"
# certFile: "/etcd/kubernetes/pki/etcd/etcd.crt"
# keyFile: "/etcd/kubernetes/pki/etcd/etcd.key"
networking:
serviceSubnet: "10.96.0.0/12"
podSubnet: "10.100.0.1/24"
dnsDomain: "cluster.local"
kubernetesVersion: "v1.12.0"
controlPlaneEndpoint: "10.100.0.1:6443"
apiServer:
extraArgs:
authorization-mode: "Node,RBAC"
extraVolumes:
- name: "some-volume"
hostPath: "/etc/some-path"
mountPath: "/etc/some-pod-path"
readOnly: false
pathType: File
certSANs:
- "10.100.1.1"
- "ec2-10-100-0-1.compute-1.amazonaws.com"
timeoutForControlPlane: 4m0s
controllerManager:
extraArgs:
"node-cidr-mask-size": "20"
extraVolumes:
- name: "some-volume"
hostPath: "/etc/some-path"
mountPath: "/etc/some-pod-path"
readOnly: false
pathType: File
scheduler:
extraArgs:
address: "10.100.0.1"
extraVolumes:
- name: "some-volume"
hostPath: "/etc/some-path"
mountPath: "/etc/some-pod-path"
readOnly: false
pathType: File
certificatesDir: "/etc/kubernetes/pki"
imageRepository: "k8s.gcr.io"
useHyperKubeImage: false
clusterName: "example-cluster"
---
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
# kubelet specific options here
---
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
# kube-proxy specific options here