k8s集群搭建

1.create VM

centos 7.9 2CPU4GB

k8s-master
公共 IP 地址
20.212.185.31
专用 IP 地址
10.5.0.4

k8s-node1
公共 IP 地址
20.205.154.71
专用 IP 地址
10.5.0.5

k8s-node2
公共 IP 地址
20.212.197.234
专用 IP 地址
10.5.0.6

k8s-win
公共 IP 地址
20.212.156.45
专用 IP 地址
10.5.0.7

2.初始化配置

更新系统

yum update -y

关闭防火墙

systemctl stop firewalld
systemctl disable firewalld

关闭selinux

sed -i 's/enforcing/disabled/' /etc/selinux/config # 永久
setenforce 0 # 临时

关闭swap

swapoff -a # 临时
sed -ri 's/.swap./#&/' /etc/fstab # 永久

根据规划设置主机名

hostnamectl set-hostname

在master添加hosts

cat >> /etc/hosts << EOF
10.5.0.4 k8s-master
10.5.0.5 k8s-node1
10.5.0.6 k8s-node2
EOF

将桥接的IPv4流量传递到iptables的链

cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system # 生效

时间同步

yum install ntpdate -y
ntpdate time.windows.com
kubeadm init
--apiserver-advertise-address=10.5.0.4
--kubernetes-version v1.21.0
--service-cidr=10.96.0.0/12
--pod-network-cidr=10.244.0.0/16
--ignore-preflight-errors=all

kubeadm join 10.5.0.4:6443 --token rjm6xz.p9gaeqq9p4c2p48f
--discovery-token-ca-cert-hash sha256:c335b6cb6682bbb775e281d396f574f16bd1c90814de778d069d426b11c2dabc

kubeadm join 10.5.0.4:6443 --token rjm6xz.p9gaeqq9p4c2p48f
--discovery-token-ca-cert-hash
sha256:c335b6cb6682bbb775e281d396f574f16bd1c90814de778d069d426b11c2dabc

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