重新加载Ansible的动态广告资源 [英] Reload Ansible's dynamic inventory

问题描述

我正在使用Ansible设置EC2实例并部署应用程序.有一个主机脚本，该脚本收集与标签相关的服务器和组信息.我想将这些操作作为一个剧本运行，所以

I'm using Ansible to setup EC2 instances and deploy an app. There's a hosts script which gathers tags related servers and groups info. I'd like to run these actions as a single playbook, so

1. 根据需要创建新实例
2. 主机脚本加载清单(包括服务器的事实)
3. 部署手册有效

但是，库存是预先加载的，因此如果在播放过程中创建/更新服务器，则没有服务器/组数据.我可以1)分开配置和部署手册，2)在服务器更新时使用add_host技巧来模拟动态清单，但是这些方法存在缺点.

However, inventory loaded in advance so there is no servers/groups data if servers created/updated during the play. I can 1) separate provision and deployment playbooks 2) use add_host trick to emulate dynamic inventory when servers are updated, but there are drawbacks in those approaches.

我可以强迫Ansible重新加载库存吗?我的测试文件是: hosts脚本:

Can I force Ansible to reload inventory? My test files are: hosts script:

#!/bin/sh
echo `date` >> log.log
echo "{\"standalone\":[\"localhost\"]}"

示例playbook.yml:

---
- hosts: all
  tasks:
    - name: show inventory_hostname
      command: echo {{ inventory_hostname }}

我运行它ansible-playbook -i hosts playbook.yml -v并看到两次运行:

$> cat log.log
Thu Mar 12 09:43:16 SAMT 2015
Thu Mar 12 09:43:16 SAMT 2015

但是我还没有找到将它加倍的命令.

but I haven't found a command to double it.

推荐答案

使用Ansible 2.0+，您可以通过运行

With Ansible 2.0+, you can refresh your inventory mid-play by running the task:

- meta: refresh_inventory

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