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

Environment description

System:

Centos 7.5

Cluster:

Master1 192.168.214.88

Master2 192.168.214.89

Master3 192.168.214.90

Etcd1 192.168.214.200

Etcd2 192.168.214.201

Etcd3 192.168.214.202

Node1 192.168.214.203

Node2 192.168.214.204

Node3 192.168.214.205

Each node component

Master: binary installation kube-apiserver,kube-scheduler,kube-config-manager (three important components on master), kubectl (command line tool)

Note: the functions of kube-scheduler, kube-controller-manager and kube-apiserver are closely related; at the same time, only one kube-scheduler and kube-controller-manager process is working. If you run more than one, you need to elect a leader.

Etcd: source binary installation, elect leader

Node: installing flannel,kubelet,kube-proxy,docker-ce

Haproxy: configuring the tcp proxy haroxy component

Software version information

Kubernetes:1.12.2

Etcd:3.2.22

Docker-ce:18.06

Flannel:0.9.1

Haproxy:1.5.18

Preparatory work

All nodes turn off the firewall

Systemctl stop firewalld & & systemctl disable firewalld

All nodes turn off selinux

Sed-I "s/SELINUX=.*/SELINUX=disabled/g" / etc/selinux/config & & setenforce 0

Configure yum source to facilitate installation of kubernetes components

Yum install-y epel-releasevim / etc/yum.repos.d/kubernetes.repo [kubernetes] name=Kubernetesbaseurl= http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64enabled=1gpgcheck=0repo_gpgcheck=0gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg

Host orientation to communicate with cluster hostname

Vim / etc/hostsmaster1 192.168.214.88 master1master2 192.168.214.89 master2etcd1 192.168.214.200 etcd1etcd2 192.168.214.201 etcd2etcd3 192.168.214.202 etcd3node1 192.168.214.203 node1node2 192.168.214.204 node2

Master1 generates secret key and sets secret-free login to other nodes in the cluster.

Ssh-keygen ssh-copy-id-I / root/.ssh/id_rsa.pub master2ssh-copy-id-I / root/.ssh/id_rsa.pub master3ssh-copy-id-I / root/.ssh/id_rsa.pub etcd1ssh-copy-id-I / root/.ssh/id_rsa.pub etcd2ssh-copy-id-I / root/.ssh/id_rsa.pub etcd3ssh-copy-id-I / root/.ssh/id _ rsa.pub node1ssh-copy-id-I / root/.ssh/id_rsa.pub node2ssh-copy-id-I / root/.ssh/id_rsa.pub node3ssh-copy-id-I / root/.ssh/id_rsa.pub mastercluster

Configure ntpdate time server

Yum install ntpdate-ysystemctl enable ntpdate.servicesystemctl start ntpdate.service temporary synchronization: ntpdate time7.aliyun.com sets the task schedule crontab-usr/sbin/ntpdate time7.aliyun.com > / dev/null 2 > & 1

Close swap, otherwise it will cause kubelet to fail to start

# # temporary shutdown: swapoff-aplink # permanent shutdown: sed-I's Unip. Swing swap.disabled swap.temporary shutdown: permanent shutdown: sed-I's Universe.

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