系统信息
- CentOS Linux release 7.6.1810 (Core)
- 3.10.0-957.27.2.el7.x86_64
环境准备
-
关闭防火墙
$ systemctl stop firewalld $ systemctl disable firewalld -
关闭selinux：
$ sed -i 's/enforcing/disabled/' /etc/selinux/config $ setenforce 0 -
关闭swap：
$ echo "vm.swappiness = 0">> /etc/sysctl.conf $ swapoff -a -
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 -
加载内核模块
$ modprobe br_netfilter -
设置repo源
$ rm -rfv /etc/yum.repos.d/* # base repo $ curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo # docker repo $ curl -o /etc/yum.repos.d/docker-ce.repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo # k8s repo $ 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=1 repo_gpgcheck=1 gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg EOF # update cache $ yum clean all $ yum makecache $ yum repolist -
安装常用包
$ yum install vim bash-completion net-tools gcc -y
所有节点安装docker/kubeadm/kubelet
# 安装docker
$ yum install docker-ce-18.06.3.ce -y
# 添加阿里云仓库加速（最好换成自己的）
$ mkdir -p /etc/docker
$ tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://ahtqbhz9.mirror.aliyuncs.com"]
}
EOF
$ systemctl daemon-reload
$ systemctl restart docker
$ systemctl enable docker
# 安装 kubeadm、kubelet、kubectl
$ yum install -y kubelet-1.18.0 kubeadm-1.18.0 kubectl-1.18.0
$ systemctl enable kubelet
部署Kubernetes Master
# apiserver-advertise-address地址就是master的IP。
$ kubeadm init --kubernetes-version=1.18.0 \
--apiserver-advertise-address=10.128.143.100 \
--image-repository registry.aliyuncs.com/google_containers \
--service-cidr=10.10.0.0/16 --pod-network-cidr=10.122.0.0/16
$ mkdir -p $HOME/.kube
$ sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
$ sudo chown $(id -u):$(id -g) $HOME/.kube/config
设置命令补全
$ source <(kubectl completion bash)
安装calico网络
$ kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
查看pod和node
$ kubectl get pod --all-namespaces
$ kubectl get node
使用单节点k8s
$ kubectl taint nodes --all node-role.kubernetes.io/master-
