Shulou(Shulou.com)06/03 Report--

Several official Kubernetes deployment methods

Minikube

Minikube is a tool that can quickly run a single point of Kubernetes locally, try Kubernetes or be used by daily development users. Cannot be used in a production environment.

Official address: https://kubernetes.io/docs/setup/minikube/

Kubeadm

Kubeadm is also a tool that provides kubeadm init and kubeadm join for rapid deployment of Kubernetes clusters.

Official address: https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm/

Binary packet

Download the released binaries from the official version, deploy each component manually, and form a Kubernetes cluster.

Summary:

When deploying Kubernetes clusters in a production environment, only Kubeadm and binary packages are optional. Kubeadm lowers the deployment threshold, but shields a lot of details, so it is difficult to troubleshoot problems encountered. We use binaries to deploy Kubernetes clusters here, and I also recommend that you use this method. Although manual deployment is troublesome, you can learn a lot of working principles, which is more conducive to later maintenance.

Software environment

Software version

Operating system CentOS7.5_x64

Docker 18-ce

Kubernetes 1.12

Server role

Role IP component

K8s-master 10.1.1.206 kube-apiserver,kube-controller-manager,kube-scheduler,etcd

K8s-node1 10.1.1.207 kubelet,kube-proxy,docker,flannel,etcd

K8s-node2 10.1.1.208 kubelet,kube-proxy,docker,flannel,etcd

Architecture diagram

Deploy Etcd clusters

To generate a self-signed certificate using cfssl, download the cfssl tool first:

Cat cfssl.sh

#! / bin/bash

Wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64

Wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64

Wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64

Chmod + x cfssl_linux-amd64 cfssljson_linux-amd64 cfssl-certinfo_linux-amd64

Mv cfssl_linux-amd64 / usr/local/bin/cfssl

Mv cfssljson_linux-amd64 / usr/local/bin/cfssljson

Mv cfssl-certinfo_linux-amd64 / usr/bin/cfssl-certinfo

1.1 generate certificates

Cat etcd-cert.sh

# create the following three files:

#! / bin/bash

Cat > ca-config.json

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