#前提步骤：

1 禁用swap
sudo swapoff -a
sudo sed -i '/ swap / s/^(.*)$/#1/g' /etc/fstab
2 载入如下内核模块，
sudo tee /etc/modules-load.d/containerd.conf <<EOF
overlay
br_netfilter
EOF

sudo modprobe overlay
sudo modprobe br_netfilter
3 配置下面的网络参数
sudo tee /etc/sysctl.d/kubernetes.conf <<EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF
4 运行下面的command使改动生效：
sudo sysctl --system

#一 安装containerd
# 安装依赖
sudo apt install -y apt-transport-https ca-certificates curl software-properties-common

# 添加Docker仓库
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# 安装containerd
sudo apt update
sudo apt install -y containerd.io

# 配置containerd
sudo mkdir -p /etc/containerd
containerd config default | sudo tee /etc/containerd/config.toml

# 修改配置使用systemd cgroup驱动
sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/g' /etc/containerd/config.toml

# 重启containerd
sudo systemctl restart containerd
sudo systemctl enable containerd
sudo systemctl status containerd


#二 安装Kubernetes
‌添加阿里云 Kubernetes 源‌：

sudo curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | sudo apt-key add -
sudo tee /etc/apt/sources.list.d/kubernetes.list <<-'EOF'
deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
EOF

‌更新包索引‌：
sudo apt update

安装 kubeadm, kubelet 和 kubectl‌：
sudo apt install -y kubelet=1.28.0-00 kubeadm=1.28.0-00 kubectl=1.28.0-00


sudo kubeadm init --control-plane-endpoint=172.16.0.75

#三 出现错误解决
ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]: /proc/sys/net/bridge/bridge-nf-call-iptables does not exist k8s ubuntu 安装启动报错如何解决
1. 加载必需的内核模块
# 加载内核模块
sudo modprobe overlay
sudo modprobe br_netfilter

# 验证模块是否加载
lsmod | grep br_netfilter
lsmod | grep overlay


2. 创建sysctl配置文件
# 创建配置文件
cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF


# 创建sysctl配置文件
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

# 应用sysctl配置
sudo sysctl --system