在CentOS上配置Kubernetes(k8s)集群通常涉及以下步骤:
systemctl stop firewalld && systemctl disable firewalld
setenforce 0 && sed -i 's/^SELINUX=enforcing$/SELINUX=disabled/' /etc/selinux/config
swapoff -a && sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
hostnamectl set-hostname k8s-master
/etc/hosts
文件,添加集群中所有节点的IP地址和主机名。192.168.0.51 k8s-master
192.168.0.52 k8s-node1
192.168.0.53 k8s-node2
yum install -y ntp
ntpdate time.windows.com
curl https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo
yum list docker-ce --showduplicates | sort -r
yum install -y docker-ce-20.10.6-3.el7
systemctl start docker
systemctl enable docker
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
yum list kubelet --showduplicates | sort -r
yum install -y kubelet-1.18.0 kubeadm-1.18.0 kubectl-1.18.0
systemctl enable kubelet
systemctl start kubelet
kubeadm init --pod-network-cidr=10.244.0.0/16
mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config
kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
kubectl get nodes
以上步骤是基于CentOS 7和较新版本的Kubernetes进行安装的。如果使用的是CentOS 8或其他版本,可能需要根据具体情况进行调整。