1. #!/bin/bash
    2. yum install wget net‐tools ntp vim bash‐comp* ‐y
    3. ntpdate 0.asia.pool.ntp.org  # 同步系统时间
    4. modprobe br_netfilter
    5. echo "1" >/proc/sys/net/bridge/bridge-nf-call-iptables
    7. # 将桥接的IPv4流量传递至iptables的链
    8. cat >>/etc/sysctl.d/k8s.conf <<EOF
    9. net.bridge.bridge-nf-call-ip6tables = 1
    10. net.bridge.bridge-nf-call-iptables = 1
    11. EOF
    13. # 关闭防火墙
    14. systemctl stop firewalld
    15. systemctl disable firewalld
    17. # 关闭selinux
    18. setenforce 0
    19. sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
    21. # 关闭swap
    22. swapoff -a
    23. yes | cp /etc/fstab /etc/fstab_bak
    24. cat /etc/fstab_bak |grep -v swap > /etc/fstab
    25. free -m  # 验证swap
    27. # 配置yum、docker和k8s的源
    28. wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    29. cat >>/etc/yum.repos.d/kubernetes.repo <<EOF
    30. [kubernetes]
    31. name=Kubernetes
    32. baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
    33. enabled=1
    34. gpgcheck=1
    35. repo_gpgcheck=1
    36. gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
    37. EOF
    39. wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
    40. yum repolist
    42. # 安装docker
    43. yum install -y yum-utils device-mapper-persistent-data lvm2
    44. yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
    45. yum -y install docker-ce
    46. mkdir /etc/docker
    47. cat > /etc/docker/daemon.json <<EOF
    48. {
    49.   "registry-mirrors": ["https://6yus5ux3.mirror.aliyuncs.com"],
    50.   "exec-opts": ["native.cgroupdriver=systemd"]
    51. }
    52. EOF
    54. # 启动docker
    55. systemctl daemon-reload
    56. systemctl enable docker
    57. systemctl restart docker
    59. # 查看docker信息
    60. docker info | grep Cgroup
    62. # 安装kubeadm、kubelet、kubectl
    63. yum install -y kubelet kubeadm kubectl