centos7 --kubeadm安装


One or more machines running one of:
Ubuntu 16.04+ Debian 9 CentOS 7 RHEL 7 Fedora 25/26 (best-effort) HypriotOS v1.0.1+
Container Linux (tested with 1800.6.0)
内存:2 GB or more of RAM per machine (any less will leave little room for your apps)
cpu:2 CPUs or more
网络:Full network connectivity between all machines in the cluster (public or private network is fine)
独立:Unique hostname, MAC address, and product_uuid for every node. ip link or ifconfig -a ,cat /sys/class/dmi/id/product_uuid
端口开放:Certain ports are open on your machines. See here for more details.
swap:Swap disabled. You MUST disable swap in order for the kubelet to work properly

一、基础配置

#添加google repo源,要翻墙。
cat <<EOF > /etc/yum.repos.d/kubernetes.repo [kubernetes] name=Kubernetes baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64 enabled=1 gpgcheck=1 repo_gpgcheck=1 gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg exclude=kube* EOF #关闭selinux setenforce 0 sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config systemctl enable --now kubelet

 

二、安装kubelt  kubeadm kubectl

yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes

 

三、启动

systemctl enable --now kubelet

 

其他

#如果防火墙启动的话,可能需要开启下面:
cat <<EOF > /etc/sysctl.d/k8s.conf net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 EOF sysctl --system

 


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