Nginx 反向代理与 HTTPS 配置指南

upstream backend_api {
    server 127.0.0.1:8080;
    keepalive 32;
}

server {
    listen 80;
    server_name mxland.top;

    location /api/ {
        proxy_pass http://backend_api;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

# 安装
sudo apt install certbot python3-certbot-nginx

# 签发并自动修改 nginx 配置
sudo certbot --nginx -d mxland.top -d www.mxland.top

# 自动续期（已内置 systemd timer，验证即可）
sudo certbot renew --dry-run

server {
    listen 443 ssl;
    http2 on;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_session_cache shared:SSL:10m;

    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header X-Content-Type-Options nosniff always;
    add_header X-Frame-Options SAMEORIGIN always;
}

# 80 全部跳转 443
server {
    listen 80;
    server_name mxland.top;
    return 301 https://$host$request_uri;
}