Installing kubernetes master on Ubuntu 16.04
To install master on Ubuntu 16.04, lets start by installing docker.
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apt-get update apt-get install -y docker.io |
Now install kubeadm
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apt-get update && apt-get install -y apt-transport-https curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - cat <<EOF >/etc/apt/sources.list.d/kubernetes.list deb http://apt.kubernetes.io/ kubernetes-xenial main EOF apt-get update apt-get install -y kubelet kubeadm kubectl |
You can create kubernetes master by running kubeadmin init command.
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root@doc1:~# kubeadm init [kubeadm] WARNING: kubeadm is in beta, please do not use it for production clusters. [init] Using Kubernetes version: v1.8.5 [init] Using Authorization modes: [Node RBAC] [preflight] Running pre-flight checks [kubeadm] WARNING: starting in 1.8, tokens expire after 24 hours by default (if you require a non-expiring token use --token-ttl 0) [certificates] Generated ca certificate and key. [certificates] Generated apiserver certificate and key. [certificates] apiserver serving cert is signed for DNS names [doc1.elitetechs.com kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local] and IPs [10.96.0.1 45.32.210.20] [certificates] Generated apiserver-kubelet-client certificate and key. [certificates] Generated sa key and public key. [certificates] Generated front-proxy-ca certificate and key. [certificates] Generated front-proxy-client certificate and key. [certificates] Valid certificates and keys now exist in "/etc/kubernetes/pki" [kubeconfig] Wrote KubeConfig file to disk: "admin.conf" [kubeconfig] Wrote KubeConfig file to disk: "kubelet.conf" [kubeconfig] Wrote KubeConfig file to disk: "controller-manager.conf" [kubeconfig] Wrote KubeConfig file to disk: "scheduler.conf" [controlplane] Wrote Static Pod manifest for component kube-apiserver to "/etc/kubernetes/manifests/kube-apiserver.yaml" [controlplane] Wrote Static Pod manifest for component kube-controller-manager to "/etc/kubernetes/manifests/kube-controller-manager.yaml" [controlplane] Wrote Static Pod manifest for component kube-scheduler to "/etc/kubernetes/manifests/kube-scheduler.yaml" [etcd] Wrote Static Pod manifest for a local etcd instance to "/etc/kubernetes/manifests/etcd.yaml" [init] Waiting for the kubelet to boot up the control plane as Static Pods from directory "/etc/kubernetes/manifests" [init] This often takes around a minute; or longer if the control plane images have to be pulled. [apiclient] All control plane components are healthy after 48.004158 seconds [uploadconfig] Storing the configuration used in ConfigMap "kubeadm-config" in the "kube-system" Namespace [markmaster] Will mark node doc1.elitetechs.com as master by adding a label and a taint [markmaster] Master doc1.elitetechs.com tainted and labelled with key/value: node-role.kubernetes.io/master="" [bootstraptoken] Using token: cfeeef.e7a85b6b4a55936c [bootstraptoken] Configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate credentials [bootstraptoken] Configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token [bootstraptoken] Configured RBAC rules to allow certificate rotation for all node client certificates in the cluster [bootstraptoken] Creating the "cluster-info" ConfigMap in the "kube-public" namespace [addons] Applied essential addon: kube-dns [addons] Applied essential addon: kube-proxy Your Kubernetes master has initialized successfully! To start using your cluster, you need to run (as a regular user): mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(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: http://kubernetes.io/docs/admin/addons/ You can now join any number of machines by running the following on each node as root: kubeadm join --token cfeeef.e7a85b6b4a55936c 45.32.210.20:6443 --discovery-token-ca-cert-hash sha256:68540be50b8436e5d08c097ec9328b61398d8dd5a9a7449a1e55520b88d423f3 root@doc1:~# |