Centos7搭建k8s集群

k8s集群节点

192.168.128.160 k8s-master

192.168.128.161 k8s-node1

192.168.128.162 k8s-node2

1.先搭建master节点

# 在所有节点上禁用swap
sudo swapoff -a
sudo sed -i 's/.*swap.*/#&/' /etc/fstab

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

# 在所有节点上禁用防火墙

systemctl stop firewalld
systemctl disable firewalld

#下载aliyun源

mv /etc/yum.repos.d/* /tmp

curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

设置时区与时间同步

ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

yum install dnf ntpdate -y

dnf makecache ntpdate

ntp.aliyun.com

ntpdate time.windows.com

# 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

#下载docker源

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

或者

yum-config-manager --add-repo https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo

或者

yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

#添加阿里云k8s软件源
cat > /etc/yum.repos.d/kubernetes.repo << EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

#清理yum缓存，生成缓存

yum clean all

yum makecache

#在master节点执行
hostnamectl set-hostname k8s-master

#在node1节点执行
hostnamectl set-hostname k8s-node1

#在node2节点执行
hostnamectl set-hostname k8s-node2

# 编辑文件，以EOF作为结束符

cat >>/etc/hosts <<EOF

# 写入文件内容

192.168.128.160 k8s-master

192.168.128.161 k8s-node1

192.168.128.162 k8s-node2