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This article will explain in detail how to build K8S in CentOS. The content of the article is of high quality. Therefore, Xiaobian shares it with you as a reference. I hope you have a certain understanding of relevant knowledge after reading this article.

Environment:

Operating System: Win10

Virtual machine: virtual box

Linux distribution: CentOS7

Linux kernel (viewed with uname -r): 3.10.0-957.el7.x86_64

ip(master) for communication between master and node nodes: 192.168.99.104

II. Install docker-ce 18.09.9 (all machines)

All machines with k8s installed need docker installed, the command is as follows:

#Tools required to install docker yum install -y yum-utils device-mapper-persistent-data lvm2 #Configure Alibaba Cloud docker source yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo #Specify docker-ce yum install -y docker-ce-18.09.9-3.el7 #Start docker systemctl enable docker && systemctl start docker

III. Set k8s environmental preparation conditions (all machines)

K8s installation of the machine needs 2 CPU and 2g memory above, this is simple, in the virtual machine inside the configuration can be. Then execute the following script to prepare. This step is required for all k8s installed machines.

#close firewall systemctl disable firewall systemctl stop firewall #close selinux #temporarily disable selinux setenforce 0 #permanently close modify/etc/sysconfig/selinux file settings sed -i 's/SELINUX=permissive/SELINUX=disabled/'/etc/sysconfig/selinux sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config #disable swap partition swapoff -a #permanently disable, Open/etc/fstab and comment out swap. sed -i 's/.* swap.*/#&/ ' /etc/fstab #modify kernel parameter cat

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