docker exec 和 docker attach 的区别（attach过时，别用）
官方解释：attach Attach local standard input, output, and error streams to a running container谷歌翻译：attach 附加将本地标准输入，输出和错误流附加到正在运行的容器通俗解释：将终端依附到容器上（其实就是进入容器）可以认为这是一个过时的命令，更多的docker用户会考虑使用docker exec来实现相同的功能
官方解释：attach Attach local standard input, output, and error streams to a running container
谷歌翻译：attach 附加将本地标准输入，输出和错误流附加到正在运行的容器
通俗解释：将终端依附到容器上（其实就是进入容器）
可以认为这是一个过时的命令，更多的docker用户会考虑使用docker exec来实现相同的功能
docker attach 进入容器，再退出会导致容器停止；docker exec 进入容器，再退出不会导致容器停止
参考文章：docker attach和docker exec的区别
文章目录
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Docker Exec 与 Docker Attach 的比较
Docker 提供了多种方式来与运行的容器进行交互。在这篇文章中，我们将深入探讨两个主要的命令：docker exec 和 docker attach，以及它们之间的差异。
1. Docker Exec
docker exec 命令用于在正在运行的 Docker 容器中执行新的命令。这允许用户对已经启动的容器实施操作，例如查看进程、更改配置或者启动新的服务等。
以下是一个 docker exec 的基本使用示例：
docker exec -it my_container bash
上述命令会在名为 “my_container” 的容器中启动一个新的 bash shell。 -it 参数允许用户交互式地运行此 shell。
2. Docker Attach
docker attach 命令用于将用户的输入输出连接到正在运行的容器中。它可以用于查看或者与容器的主进程进行交互。
以下是一个 docker attach 的基本使用示例：
docker attach my_container
这个命令会将当前的 stdin, stdout, stderr 连接到名为 “my_container” 的容器中。
然而，docker attach 命令现已被视为过时，并且不建议在生产环境中使用。这是因为它存在一些潜在问题，包括可能导致容器主进程的意外终止。
3. 主要区别
3.1 并发性
docker exec 可以在同一个容器中并行执行多个命令，而 docker attach 则只能连接到容器的一个单独进程。
3.2 安全性
由于 docker attach 可能会导致容器主进程的意外终止，所以使用 docker exec 更安全。
3.3 交互性
尽管 docker attach 可以用于交互，但如果需要在容器内部启动新的交互式会话，使用 docker exec 会更方便。
下面是一个展示如何使用 docker exec 启动新交互式会话的示例：
docker exec -it my_container sh
4. 总结
总的来说，docker exec 提供了一种更加强大和灵活的方式来与运行中的 Docker 容器进行交互。虽然 docker attach 在某些情况下也可能有用，但由于其可能带来的潜在问题，已经被标记为过时。
参考资料：
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