What is the environmental planning and basic preparation for building a high availability cluster in Kubernetes simulation production environment

This article shows you how Kubernetes simulates the production environment to build the environmental planning and basic preparation of a high-availability cluster. The content is concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

1. Machine planning in simulated environment

II. Description of cluster environment

Operating system: CentOS7.7

Kubernetes version: 1.16.2

Docker version: 19.03

Third, cluster master and basic preparation of work nodes

1.。 Configure the hosts file

Sudo cat > > / etc/hosts/etc/rc.d/rc.local & & sudo chmod + x / etc/rc.d/rc.local

5. Shut down the system selinux

Sudo setenforce 0

Sudo sed-I's etc/sysconfig/selinux SelinuxplenforcingAccording to SELINUXAfter

Sudo sed-I's etc/selinux/config SelinuxplenforcingAccording to SELINUXAfter

6. Modify system kernel parameters

Sudo cat > / etc/sysctl.d/k8s.conf