Shulou(Shulou.com)06/02 Report--

Foreword:

During the previous deployment, I saw a lot of online tutorials, most of which were not in the wrong direction, but after many practical verification, I found that some errors could not be avoided, so organize a summary of deployment:

Preparatory work:

The topology of this deployment is 1masterquarter 2node node, and the preparation includes all the devices:

A) turn off the firewall of each node and set it to power on and off

Systemctl stop firewalld

Systemctl disable firewalld

B) shut down the system selinux

Setenforce 0

Sed-I's etc/selinux/config for Eng.

C) close swap

Swapoff-a closes swapon-a turns on

Top to see if swap is 0

/ etc/fastb comment out swap permanent shutdown

D) Hostname and hosts configuration

Hostnamectl set-hostname master (centos7 sets hostname)

Cat / etc/hosts

172.16.32.10 master.tdr.com master

172.16.32.11 node01.tdr.com node01

172.16.32.12 node02.tdr.com node02

E) transfer bridged IPv4 traffic to the chain of iptables

Net.bridge.bridge-nf-call-ip6tables = 1

Net.bridge.bridge-nf-call-iptables = 1

Net.ipv4.ip_forward = 1

Execute: modprobe br_netfilter

Sysctl-p / etc/sysctl.d/k8s.conf

1.docker installation and deployment

First configure the yum source and use the aliyun source for yum

Wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo-O / etc/yum.repos.d/docker-ce.repo

Yum makecache fast

Yum repolist, check the source.

Yum list docker-ce.x86_64-- showduplicates | sort-r check the docker version you want to install. I have 18.03.1-ce installed here.

Yum install-y-setopt=obsoletes=0 18.03.1.ce-1.el7.centos

Start docker and boot:

Systemctl start docker

Systemctl enable docker

Iptabels-nvL

Verify that the default policy (pllicy) of the Foward chain in the iptables filter table is ACCEPT, because the Node and pod communication of k8s requires the FORWARD chain.

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