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This article mainly introduces the example analysis of Kubernetes 1.8.4 preparation basic environment, which is very detailed and has certain reference value. Friends who are interested must read it!

This installation version is:

Kubernetes v1.8.4

Etcd v3.2.9

Calico v2.6.2

Docker v17.09.1-ce

CentOS v7.4 file system is ext4

Prepare information in advance

This tutorial will deploy the Kubernetes cluster with the following number of nodes and specifications:

IP Address

Role

CPU

Memory

10.0.0.162

Master (etcd)

one

2G

10.0.0.163

Node

one

2G

10.0.0.164

Node

one

2G

Here, master is the main control node and deployment node, and node is the working node of the application. All operations are performed by root consumers. Because my own machine configuration is limited, etcd only configures one node and is on a virtual machine with master.

First of all, make sure that the following items are ready before installation:

All nodes are interconnected to each other, and master SSH can log in to other nodes without a key.

All firewalls and SELinux are turned off

Systemctl stop firewalld & & systemctl disable firewalld & & setenforce 0 & & sed-I'/ SELINUX/s/enforcing/disabled/' / etc/selinux/config

All nodes need to set / etc/host to resolve to all hosts:

10.0.0.162 node16210.0.0.163 node16310.0.0.164 node164

Edit / lib/systemd/system/docker.service, in ExecStart=.. Add to it:

ExecStartPost=/usr/sbin/iptables-I FORWARD-s 0.0.0.0swap 0-j ACCEPTsystemctl daemon-reload & & systemctl restart docker

All nodes need to set the system parameters of / etc/sysctl.d/k8s.conf:

Cat

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