[root@k8s-master ~]# kubeadm init --config=init-config.yaml
W0615 09:09:02.736872 10425 configset.go:202] WARNING: kubeadm cannot validate component configs for API groups[kubelet.config.k8s.io kubeproxy.config.k8s.io][init] Using Kubernetes version: v1.18.0
[preflight] Running pre-flight checks
[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'[kubelet-start] Writing kubelet environment file with flags to file"/var/lib/kubelet/kubeadm-flags.env"[kubelet-start] Writing kubelet configuration to file"/var/lib/kubelet/config.yaml"[kubelet-start] Starting the kubelet
[certs] Using certificateDir folder "/etc/kubernetes/pki"[certs] Generating "ca" certificate and key
[certs] Generating "apiserver" certificate and key
[certs] apiserver serving cert is signed for DNS names [k8s-master kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local] and IPs [10.96.0.1 192.168.93.101][certs] Generating "apiserver-kubelet-client" certificate and key
[certs] Generating "front-proxy-ca" certificate and key
[certs] Generating "front-proxy-client" certificate and key
[certs] Generating "etcd/ca" certificate and key
[certs] Generating "etcd/server" certificate and key
[certs] etcd/server serving cert is signed for DNS names [k8s-master localhost] and IPs [192.168.93.101 127.0.0.1 ::1][certs] Generating "etcd/peer" certificate and key
[certs] etcd/peer serving cert is signed for DNS names [k8s-master localhost] and IPs [192.168.93.101 127.0.0.1 ::1][certs] Generating "etcd/healthcheck-client" certificate and key
[certs] Generating "apiserver-etcd-client" certificate and key
[certs] Generating "sa" key and public key
[kubeconfig] Using kubeconfig folder "/etc/kubernetes"[kubeconfig] Writing "admin.conf" kubeconfig file[kubeconfig] Writing "kubelet.conf" kubeconfig file[kubeconfig] Writing "controller-manager.conf" kubeconfig file[kubeconfig] Writing "scheduler.conf" kubeconfig file[control-plane] Using manifest folder "/etc/kubernetes/manifests"[control-plane] Creating static Pod manifest for"kube-apiserver"[control-plane] Creating static Pod manifest for"kube-controller-manager"
W0615 09:09:04.854021 10425 manifests.go:225] the default kube-apiserver authorization-mode is "Node,RBAC"; using "Node,RBAC"[control-plane] Creating static Pod manifest for"kube-scheduler"
W0615 09:09:04.854832 10425 manifests.go:225] the default kube-apiserver authorization-mode is "Node,RBAC"; using "Node,RBAC"[etcd] Creating static Pod manifest forlocal etcd in"/etc/kubernetes/manifests"[wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory "/etc/kubernetes/manifests". This can take up to 4m0s
[apiclient] All control plane components are healthy after 15.502401 seconds
[upload-config] Storing the configuration used in ConfigMap "kubeadm-config"in the "kube-system" Namespace
[kubelet] Creating a ConfigMap "kubelet-config-1.18"in namespace kube-system with the configuration for the kubelets in the cluster
[upload-certs] Skipping phase. Please see --upload-certs
[mark-control-plane] Marking the node k8s-master as control-plane by adding the label "node-role.kubernetes.io/master=''"[mark-control-plane] Marking the node k8s-master as control-plane by adding the taints [node-role.kubernetes.io/master:NoSchedule][bootstrap-token] Using token: abcdef.0123456789abcdef
[bootstrap-token] Configuring bootstrap tokens, cluster-info ConfigMap, RBAC Roles
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to get nodes
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate credentials
[bootstrap-token] configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token
[bootstrap-token] configured RBAC rules to allow certificate rotation for all node client certificates in the cluster
[bootstrap-token] Creating the "cluster-info" ConfigMap in the "kube-public" namespace
[kubelet-finalize] Updating "/etc/kubernetes/kubelet.conf" to point to a rotatable kubelet client certificate and key
[addons] Applied essential addon: CoreDNS
[addons] Applied essential addon: kube-proxy
###################################################################
Your Kubernetes control-plane has initialized successfully!###################################################################
To start using your cluster, you need to run the following as a regular user:
###################################################################mkdir-p$HOME/.kube
sudocp-i /etc/kubernetes/admin.conf $HOME/.kube/config
sudochown$(id-u):$(id-g)$HOME/.kube/config
###################################################################
You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
https://kubernetes.io/docs/concepts/cluster-administration/addons/
Then you can join any number of worker nodes by running the following on each as root:
###################################################################
kubeadm join192.168.93.101:6443 --token abcdef.0123456789abcdef \
--discovery-token-ca-cert-hash sha256:6e241cac434bff98306479bddda1fc912eda3d3f56f73a23373977fef40d5082
###################################################################
[root@k8s-node01 ~]# kubeadm join 192.168.93.101:6443 --token abcdef.0123456789abcdef \> --discovery-token-ca-cert-hash sha256:6e241cac434bff98306479bddda1fc912eda3d3f56f73a23373977fef40d5082
W0615 09:17:57.223102 9376 join.go:346][preflight] WARNING: JoinControlPane.controlPlane settings will be ignored when control-plane flag is not set.
[preflight] Running pre-flight checks
[preflight] Reading configuration from the cluster...
[preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'[kubelet-start] Downloading configuration for the kubelet from the "kubelet-config-1.18" ConfigMap in the kube-system namespace
[kubelet-start] Writing kubelet configuration to file"/var/lib/kubelet/config.yaml"[kubelet-start] Writing kubelet environment file with flags to file"/var/lib/kubelet/kubeadm-flags.env"[kubelet-start] Starting the kubelet
[kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap...
This node has joined the cluster:
* Certificate signing request was sent to apiserver and a response was received.
* The Kubelet was informed of the new secure connection details.
Run 'kubectl get nodes' on the control-plane to see this nodejoin the cluster.
[root@k8s-node02 ~]# kubeadm join 192.168.93.101:6443 --token abcdef.0123456789abcdef \> --discovery-token-ca-cert-hash sha256:6e241cac434bff98306479bddda1fc912eda3d3f56f73a23373977fef40d5082
W0615 09:18:01.227038 19243 join.go:346][preflight] WARNING: JoinControlPane.controlPlane settings will be ignored when control-plane flag is not set.
[preflight] Running pre-flight checks
[preflight] Reading configuration from the cluster...
[preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'[kubelet-start] Downloading configuration for the kubelet from the "kubelet-config-1.18" ConfigMap in the kube-system namespace
[kubelet-start] Writing kubelet configuration to file"/var/lib/kubelet/config.yaml"[kubelet-start] Writing kubelet environment file with flags to file"/var/lib/kubelet/kubeadm-flags.env"[kubelet-start] Starting the kubelet
[kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap...
This node has joined the cluster:
* Certificate signing request was sent to apiserver and a response was received.
* The Kubelet was informed of the new secure connection details.
Run 'kubectl get nodes' on the control-plane to see this nodejoin the cluster.
[root@k8s-master ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
k8s-master NotReady master 11m v1.18.0
k8s-node01 NotReady <none> 2m22s v1.18.0
k8s-node02 NotReady <none> 2m18s v1.18.0
[root@k8s-master ~]# kubectl apply -f kube-flannel.yaml
namespace/kube-flannel created
clusterrole.rbac.authorization.k8s.io/flannel created
clusterrolebinding.rbac.authorization.k8s.io/flannel created
serviceaccount/flannel created
configmap/kube-flannel-cfg created
daemonset.apps/kube-flannel-ds created
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