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

CentOS-7 install Kubernetes-1.12.1

Label: CentOS-7- installation Kubernetes-1.12.1

Environment description:

System: CentOS-7 4.19.0-1.el7.elrepo.x86_64

Kubernetes:Kubernetes-1.12.1

Construct one master and one node

Prerequisites (to be executed on each server): 1. Enable iptables forwarding

Xian uses the command cat / proc/sys/net/bridge/bridge-nf-call-iptables to check whether the value is 1. If it is 1, the following steps do not need to be performed, otherwise, continue with the following steps to enable the relevant functions.

1.1 modify the file

Sed-I 7recover9sCompact 0Accord1Accord g / usr/lib/sysctl.d/00-system.conf

1.2 load netfilter module (you can use the lsmod | grep netfilter command to see if the module is loaded)

Modprobe br_netfilter

2.1.3 make the changes effective

Sysctl-p / usr/lib/sysctl.d/00-system.conf2. Turn off Swap swap space

2.1 modify the file

Echo 'vm.swappiness = 0' > > / usr/lib/sysctl.d/00-system.conf

2.2 make the changes effective

Sysctl-p / usr/lib/sysctl.d/00-system.conf

2.3 turn off swap

Swapoff-a

2.4 comment out the mount code for swap in the "/ etc/fstab" file (turn off boot auto mount)

Before change: / dev/mapper/cl-swap defaults 0 0 after change: # / dev/mapper/cl-swap defaults 0 03. Add hosts to ensure that the hostname resolution is normal echo-e '192.168.2.168 node1.ztpt.com\ n192.168.2.162 node2.ztpt.com\ n192.168.2.170 node3.ztpt.com' > > / etc/hosts4. Shut down iptables, selinux and firewalld services [root@node1] # getenforce Disabled [root@node1] # systemctl status firewalld ● firewalld.service-firewalld-dynamic firewall daemon Loaded: loaded (/ usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled) Active: inactive (dead) Docs: man:firewalld (1) [root@node1 ~] # systemctl status iptables ● iptables.service-IPv4 firewall with iptables Loaded: loaded (/ usr/lib/systemd/system/iptables.service; disabled) Vendor preset: disabled) Active: inactive (dead) 5. All three servers need to install docker, kubelet, kubectl and kubeladm to install Docker-CE (see https://blog.51cto.com/wangxiaoke/2174103)

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

Installation dependency

Sudo yum install-y yum-utils device-mapper-persistent-data lvm2

Install docker-ce

Yum install-y docker-ce

Set the docker service to boot

Systemctl enable docker.service

Set docker-registry-mirrors address (Aliyun provides free mirroring service)

Sudo tee / etc/docker/daemon.json

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