在Ubuntu上安装Kubernetes集群是一个相对复杂的过程,需要按照一定的步骤进行。以下是一个详细的指南,帮助你在Ubuntu系统上安装Kubernetes。
sudo apt update
sudo apt upgrade -y
sudo apt install vim lrzsz unzip wget net-tools tree bash-completion telnet -y
sudo swapoff -a
sudo sed -i '/swap/s/^/#/' /etc/fstab
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
EOF
sudo sysctl --system
sudo apt install ntpdate ntpdate ntp.aliyun.com
for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do
sudo apt-get remove $pkg;
done
sudo apt update
sudo apt upgrade
sudo apt install ca-certificates
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo "deb https://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker-ce.list
sudo apt update
sudo apt install docker-ce docker-ce-cli containerd.io -y
sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker
sudo systemctl start docker
sudo systemctl enable docker
vim /etc/docker/daemon.json
添加以下内容:
{
"registry-mirrors": ["https://mirrors.aliyuncs.com"]
}
保存后重启Docker:
sudo systemctl daemon-reload
sudo systemctl restart docker
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo "deb https://mirrors.cloud.google.com/apt/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt update
sudo apt install -y apt-transport-https ca-certificates curl
curl -s https://mirrors.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo "deb https://mirrors.cloud.google.com/apt/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt update
sudo apt install -y kubelet kubeadm kubectl
sudo apt mark hold kubelet kubeadm kubectl
sudo systemctl enable kubelet
sudo systemctl start kubelet
在master节点上执行:
sudo kubeadm init --control-plane-endpoint=k8s-master-noble --pod-network-cidr=10.244.0.0/16
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
在master节点上获取join命令:
kubeadm token create --print-join-command
在工作节点上执行:
echo "k8s-master-noble" | sudo tee /etc/hosts
sudo kubeadm join k8s-master-noble:6443 --token <token> --discovery-token-ca-cert-hash sha256:<hash>
在master节点上执行:
kubectl get nodes
所有节点状态为Ready时,集群安装成功。