centos

centos k8s网络设置方法

小樊
31
2025-04-27 02:37:42
栏目: 智能运维

在CentOS上配置Kubernetes(k8s)网络通常涉及以下几个步骤:

  1. 环境准备
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
sed -i 's/enforcing/disabled/' /etc/selinux/config
swapoff -a
sed -i '/swap/s///#/' /etc/fstab
DEVICE=eth0
BOOTPROTO=static
IPADDR=192.168.1.100
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
DNS1=8.8.8.8
DNS2=8.8.4.4
ONBOOT=yes

保存并退出编辑器,然后重启网络服务:

systemctl restart network
hostnamectl set-hostname k8s-master
192.168.1.100 k8s-master
192.168.1.101 k8s-node1
192.168.1.102 k8s-node2
yum install ntpdate
ntpdate time.windows.com
  1. 安装Docker
curl https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo

安装Docker CE:

yum install -y docker-ce docker-ce-cli containerd.io

启动Docker并设置开机启动:

systemctl start docker && systemctl enable docker
  1. 安装kubeadm、kubelet和kubectl
cat > /etc/yum.repos.d/kubernetes.repo <<EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyuncs.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyuncs.com/kubernetes/yum/doc/yum-key.gpg
repo_gpgcheck=1
gpgcheck=1
EOF

安装:

yum install -y kubelet kubeadm kubectl

设置开机启动:

systemctl enable kubelet && systemctl start kubelet
  1. 部署Kubernetes集群
kubeadm init --apiserver-advertise-address 192.168.1.100 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.22.15 --service-cidr 10.96.0.0/12 --pod-network-cidr 10.244.0.0/16
kubeadm join 192.168.1.100:6443 --token abcdef.0123456789abcdef --discovery-token-ca-cert-hash sha256:abcdef123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef
  1. 安装网络插件(如Calico):
wget https://docs.projectcalico.org/manifests/calico.yaml

应用Calico配置:

kubectl apply -f calico.yaml
  1. 验证网络配置
ping 8.8.8.8
ping 114.114.114.114
kubectl get nodes
kubectl get pods --all-namespaces

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