编写k8s二进制部署脚本

A：

首先，需要下载 kubernetes 的二进制包，并解压到本地。

然后，编写以下脚本：

#!/bin/bash

# 安装工具
apt-get update
apt-get install -y socat conntrack ipset

# 下载 kubernetes 的二进制包

VERSION=1.21.1
curl -LO "https://storage.googleapis.com/kubernetes-release/release/v$VERSION/bin/linux/amd64/kube-apiserver"
curl -LO "https://storage.googleapis.com/kubernetes-release/release/v$VERSION/bin/linux/amd64/kube-controller-manager"
curl -LO "https://storage.googleapis.com/kubernetes-release/release/v$VERSION/bin/linux/amd64/kube-scheduler"
curl -LO "https://storage.googleapis.com/kubernetes-release/release/v$VERSION/bin/linux/amd64/kubectl"

# 授予权限
chmod +x kube-apiserver kube-controller-manager kube-scheduler kubectl

# 复制二进制文件到 /usr/local/bin 目录
mv kube-apiserver kube-controller-manager kube-scheduler kubectl /usr/local/bin/

# 创建 systemd unit 文件

touch /etc/systemd/system/kube-apiserver.service
cat > /etc/systemd/system/kube-apiserver.service <<EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes

[Service]
ExecStart=/usr/local/bin/kube-apiserver
Restart=always
User=root

[Install]
WantedBy=multi-user.target
EOF

touch /etc/systemd/system/kube-controller-manager.service
cat > /etc/systemd/system/kube-controller-manager.service <<EOF
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes

[Service]
ExecStart=/usr/local/bin/kube-controller-manager
Restart=always
User=root

[Install]
WantedBy=multi-user.target
EOF

touch /etc/systemd/system/kube-scheduler.service
cat > /etc/systemd/system/kube-scheduler.service <<EOF
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes

[Service]
ExecStart=/usr/local/bin/kube-scheduler
Restart=always
User=root

[Install]
WantedBy=multi-user.target
EOF

# 启动服务

systemctl daemon-reload
systemctl start kube-apiserver kube-controller-manager kube-scheduler