如何重新启动CentOS 7与Ansible？ [英] How to reboot CentOS 7 with Ansible?

问题描述

我尝试重新启动在VirtualBox上运行 CentOS 7 的服务器。我使用这个任务：

I'm trying to reboot server running CentOS 7 on VirtualBox. I use this task:

- name: Restart server
  command: /sbin/reboot
  async: 0
  poll: 0
  ignore_errors: true

服务器重新启动，得到此错误：

Server is rebooted, but I get this error:

TASK: [common | Restart server] ***********************************************
fatal: [rolcabox] => SSH Error: Shared connection to 127.0.0.1 closed.
It is sometimes useful to re-run the command using -vvvv, which prints SSH debug output to help diagnose the issue.

FATAL: all hosts have already failed -- aborting

做错了？如何解决这个问题？

What am I doing wrong? How can I fix this?

推荐答案

你可能不会做任何真正的错误，只是/ sbin / reboot正在关闭下来服务器这么快，服务器正在拆除ansible使用的ansible之前ansible本身可以关闭它。因此，ansible报告错误，因为它看到SSH连接失败的意想不到的原因。

You're likely not doing anything truly wrong, it's just that /sbin/reboot is shutting down the server so quickly that the server is tearing down the SSH connection used by ansible before ansible itself can close it. As a result ansible is reporting an error because it sees the SSH connection failing for an unexpected reason.

你可能想要解决这个问题是从使用 / sbin / reboot 改为使用 / sbin / shutdown 。 shutdown命令允许您传递一个时间，当与 -r 开关组合时，它将执行重新启动而不是实际关闭。所以你可能想尝试这样的任务：

What you might want to do to get around this is to switch from using /sbin/reboot to using /sbin/shutdown instead. The shutdown command lets you pass a time, and when combined with the -r switch it will perform a reboot rather than actually shutting down. So you might want to try a task like this:

- name: Restart server
  command: /sbin/shutdown -r +1
  async: 0
  poll: 0
  ignore_errors: true

$ b b

这将延迟服务器重新启动1分钟，但这样做应该给Ansible足够的时间来关闭SSH连接本身，从而避免您当前得到的错误。

This will delay the server reboot for 1 minute, but in doing so it should give Ansible enough time to to close the SSH connection itself, thereby avoiding the error that you're currently getting.

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