kubernetes

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安装docker

  1. 安装所需的包。
    yum-utils提供了yum-config-manager

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

  2. 设置稳定存储库

    yum-config-manager –add-repo https://download.docker.com/linux/centos/docker-ce.repo

  3. 安装DOCKER CE

    yum install docker-ce

  4. 启动Docker。

    systemctl start docker

    卸载docker

    卸载Docker包.主机上的Images, containers, volumes或自定义配置文件不会自动删除。要删除所有Images, containers, volumes

    yum remove docker* && rm -rf /var/lib/docker

安装kubernetes

  1. 安装 flannel etcd
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    yum -y install flannel etcd
    systemctl start etcd.service
    systemctl enable etcd.service
    systemctl status etcd.service
  2. 启动
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    # 关闭防火墙
    systemctl stop firewalld
    systemctl disable firewalld
    # 关闭Swap Kubernetes 1.8开始要求关闭系统的Swap，如果不关闭，默认配置下kubelet将无法启动。方法一,通过kubelet的启动参数–fail-swap-on=false更改这个限制。方法二,关闭系统的Swap。
    swapoff -a 
    sed -i 's/.*swap.*/#&/' /etc/fstab
    # 禁用SELinux
    setenforce  0 
    sed -i "s/^SELINUX=enforcing/SELINUX=disabled/g" /etc/sysconfig/selinux 
    sed -i "s/^SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config 
    sed -i "s/^SELINUX=permissive/SELINUX=disabled/g" /etc/sysconfig/selinux 
    sed -i "s/^SELINUX=permissive/SELINUX=disabled/g" /etc/selinux/config  
    # 配置系统内核参数使流过网桥的流量也进入iptables/netfilter框架中，在/etc/sysctl.conf中添加以下配置：
    cat <<EOF >  /etc/sysctl.d/k8s.conf
    net.bridge.bridge-nf-call-ip6tables = 1
    net.bridge.bridge-nf-call-iptables = 1
    EOF
    sysctl -p /etc/sysctl.d/k8s.conf