K8s Kubernetes集群部署

[root@master ~]# yum -y install docker-ce

[root@master ~]# systemctl enable --now docker

Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.

[root@master ~]# docker --version

Docker version 20.10.12, build e91ed57

[root@master ~]# ls /etc/docker/

key.json

//镜像加速

[root@master ~]# cat > /etc/docker/daemon.json << EOF

{

“registry-mirrors”: [“https://b9pmyelo.mirror.aliyuncs.com”],

“exec-opts”: [“native.cgroupdriver=systemd”],

“log-driver”: “json-file”,

“log-opts”: {

“max-size”: “100m”

},

“storage-driver”: “overlay2”

}

EOF

[](()添加kubernetes阿里云YUM软件源

[root@master ~]# 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=0

repo_gpgcheck=0

gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg

EOF

[root@master ~]# yum clean all && yum makecache

[](()安装kubeadm，kubelet和kubectl

//安装kubeadm，kubelet和kubectl,由于版本更新频繁，这里指定版本号部署

[root@master ~]# yum install -y kubelet-1.20.0 kubeadm-1.20.0 kubectl-1.20.0

[root@master ~]# systemctl enable kubelet

Created symlink /etc/systemd/system/multi-user.target.wants/kubelet.service → /usr/lib/systemd/system/kubelet.service.

[root@master ~]# systemctl status kubelet

● kubelet.service - kubelet: The Kubernetes Node Agent

Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled)

Drop-In: /usr/lib/systemd/system/kubelet.service.d

└─10-kubeadm.conf

Active: inactive (dead)

Docs: https://kubernetes.io/docs/

[](()部署Kubernetes Master

---

[root@master ~]# kubeadm init --apiserver-advertise-address 192.168.129.250 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.20.0 --service-cidr 10.96.0.0/12 --pod-network-cidr 10.244.0.0/16

[init] Using Kubernetes version: v1.20.0

[preflight] Running pre-flight checks

[WARNING IsDockerSystemdCheck]: detected “cgroupfs” as the Docker cgroup driver. The recommended driver is “systemd”. Please follow the guide at https://kubernetes.io/docs/setup/cri/

[WARNING FileExisting-tc]: tc not found in system path

[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.12. Latest validated version: 19.03

[preflight] Pulling images required for setting up a Kubernetes cluster

[preflight] This might take a minute or two, depending on the speed of your internet connection

[preflight] You can also perform this action in beforehand using ‘kubeadm config images pull’

[certs] Using certificateDir folder “/etc/kubernetes/pki”

[certs] Generating “ca” certificate and key

[certs] Generating “apiserver” certificate and key

[certs] apiserver serving cert is signed for DNS names [kubernetes kubernetes.default kubernetes.default.svc kubern