K8S v1.18.x 部署-Kubeadm方式-3：部署工具

安装kubeadm、kubelet、kubectl
安装检查
确保MAC唯一性

• MAC地址

ip link or ifconfig -a

• product_uuid

cat /sys/class/dmi/id/product_uuid

**检查网络适配器**确保网络可连通，路由配置正确。**检查所需端口可用**控制平面节点：![](https://s4.51cto.com/images/blog/202103/13/35856afa1341b7f2298e3f4d0eeb4a35.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)工作平面节点:![](https://s4.51cto.com/images/blog/202103/13/6fb9e1fdffc68d5fa42e49c87173f832.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)**确认节点上的Container Runtime**Kubeadm可检测到容器运行时：![](https://s4.51cto.com/images/blog/202103/13/0c2d7c9dec8c55a114808d71152d6f90.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)如果同时检测到docker和containerd，则优先选择docker。kubelet通过内置的dockershim CRI实现与Docker集成。**准备安装源**除了LB节点之外，其他节点都需要该安装源。

配置kubernetes软件yum源

$ cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[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

**安装kubeadm、kubelet、kubectl**Master节点和Node节点安装。

查看yum上的kubernetes版本，这里最新版本是1.18.4-1.x86_64

$ yum search kubeadm --showduplicates
...
kubeadm-1.18.6-0.x86_64 : Command-line utility for administering a Kubernetes cluster.
kubeadm-1.18.8-0.x86_64 : Command-line utility for administering a Kubernetes cluster.
kubeadm-1.19.0-0.x86_64 : Command-line utility for administering a Kubernetes cluster.

[root@K8S-TEST-M1 yum.repos.d]# yum search kubelet --showduplicates
...
kubelet-1.18.6-0.x86_64 : Container cluster management
kubelet-1.18.8-0.x86_64 : Container cluster management
kubelet-1.19.0-0.x86_64 : Container cluster management

[root@K8S-TEST-M1 yum.repos.d]# yum search kubectl --showduplicates
...
kubectl-1.18.6-0.x86_64 : Command-line utility for interacting with a Kubernetes cluster.
kubectl-1.18.8-0.x86_64 : Command-line utility for interacting with a Kubernetes cluster.
kubectl-1.19.0-0.x86_64 : Command-line utility for interacting with a Kubernetes cluster.

安装kubernetes组件

$ yum install -y kubeadm-1.18.8-0.x86_64 kubelet-1.18.8-0.x86_64 kubectl-1.18.8-0.x86_64

**配置kubelet**配置kubelet使用的cgroup驱动：默认kubelet的配置文件位于：/etc/sysconfig/kubelet。建议删除该文件。使用Docker时，kubeadm将自动检测kubelet的cgroup驱动程序，可在节点部署完毕后修改/var/lib/kubelet/config.yaml来设置kubelet的cgroup驱动程序。文件内容：

...
apiVersion: kubelet.config.k8s.io/v1beta1
...
kind: KubeletConfiguration
...
cgroupDriver: systemd
...

启动kubelet

systemctl daemon-reload && systemctl enable kubelet && systemctl start kubelet && syste