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@@ -0,0 +1,113 @@
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+# 使用 apt-mirror 创建本地镜像
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+1. 安装必要工具
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+```
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+sudo apt update
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+sudo apt install apt-mirror
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+```
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+2. 配置 apt-mirror
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+编辑配置文件 /etc/apt/mirror.list：
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+```
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+sudo vi /etc/apt/mirror.list
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+```
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+添加以下内容：
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+```
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+ ############# config ##################
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+ #
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+ set base_path /var/spool/apt-mirror
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+ #
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+ # set mirror_path $base_path/mirror
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+ # set skel_path $base_path/skel
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+ # set var_path $base_path/var
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+ # set cleanscript $var_path/clean.sh
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+ # set defaultarch <running host architecture>
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+ # set postmirror_script $var_path/postmirror.sh
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+ # set run_postmirror 0
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+ set nthreads 20
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+ set _tilde 0
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+ #
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+ ############# end config ##############
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+
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+ # ROS 2 Humble 主仓库
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+ deb [arch=amd64,arm64] http://mirrors.tuna.tsinghua.edu.cn/ros2/ubuntu/ jammy main
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+
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+ # 清理不需要的架构（可选）
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+ clean http://mirrors.tuna.tsinghua.edu.cn/ros2/ubuntu
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+```
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+3. 运行镜像同步
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+```
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+sudo apt-mirror
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+```
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+这个过程会下载所有指定的软件包，可能需要较长时间和大量磁盘空间。
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+
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+4. 配置 Web 服务器
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+安装并配置 Nginx 来提供本地镜像服务：
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+```
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+ sudo apt install nginx
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+ sudo ln -s /var/spool/apt-mirror/mirror/mirrors.tuna.tsinghua.edu.cn/ros2 /var/www/html/ros2
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+```
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+修改nginx配置
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+```
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+ # 停止 nginx
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+ sudo systemctl stop nginx
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+
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+ # 创建正确的 nginx 配置
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+ sudo vi /etc/nginx/sites-available/default
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+ server {
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+ listen 80 default_server;
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+ listen [::]:80 default_server;
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+
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+ root /var/www/html;
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+
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+ index index.html index.htm;
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+ autoindex on;
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+
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+ server_name _;
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+
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+ location / {
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+ try_files $uri $uri/ =404;
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+ }
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+ }
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+ EOF
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+
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+ # 启动 nginx
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+ sudo nginx -t
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+ sudo systemctl start nginx
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+```
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+
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+5. 测试访问：
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+在服务器上测试
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+```
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+ curl -I http://localhost/ros2/ubuntu/
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+ # 应该返回类似以下信息：
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+ # HTTP/1.1 200 OK
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+ # Server: nginx/xxx
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+ # Content-Type: text/html
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+```
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+
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+6. 如果无法访问，进行故障排除
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+检查防火墙设置：
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+```
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+ # 查看防火墙状态
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+ sudo ufw status
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+
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+ # 如果防火墙开启，允许 HTTP 流量
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+ sudo ufw allow 'Nginx HTTP'
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+ sudo ufw allow 80/tcp
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+```
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+检查 nginx 配置：
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+```
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+ # 测试 nginx 配置
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+ sudo nginx -t
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+ # 重新加载 nginx
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+ sudo systemctl reload nginx
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+
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+ # 查看 nginx 错误日志
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+ sudo tail -f /var/log/nginx/error.log
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+```
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+检查目录权限：
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+```
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+ # 确保 nginx 可以访问目录
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+ sudo chmod -R 755 /var/spool/apt-mirror/
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+ sudo chown -R www-data:www-data /var/www/html/
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+ sudo chown -R www-data:www-data /var/spool/apt-mirror/
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+```
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