bash 将参数传递给 Ansible 的动态库存
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Pass a parameter to Ansible's dynamic inventory
提问by gvdm
I'm using Ansible to configure some virtual machines. I wrote a Python script which retrieves the hosts from a REST service.
My VMs are organized in "Environments". For example I have the "Test", "Red" and "Integration" environments, each with a subset of VMs.
我正在使用 Ansible 配置一些虚拟机。我编写了一个 Python 脚本，它从 REST 服务中检索主机。
我的虚拟机组织在“环境”中。例如，我有“测试”、“红色”和“集成”环境，每个环境都有一个虚拟机子集。
This Python script requires the custom --environment <ENV>parameter to retrieve the hosts of the wanted environment.
此 Python 脚本需要自定义--environment <ENV>参数来检索所需环境的主机。
The problem I'm having is passing the <ENV>to the ansible-playbookcommand.
In fact the following command doesn't work
我遇到的问题是将 传递<ENV>给ansible-playbook命令。事实上下面的命令不起作用
ansible-playbook thePlaybook.yml -i ./inventory/FromREST.py --environment Test
I get the error:
我收到错误：
Usage: ansible-playbook playbook.yml
ansible-playbook: error: no such option: --environment
What is the right syntax to pass variables to a dynamic inventory script?
将变量传递给动态清单脚本的正确语法是什么？
Update:
更新：
To better explain, the FromREST.pyscript accepts the following parameters:
为了更好地解释，该FromREST.py脚本接受以下参数：
- Either the
--listparameter or the--host <HOST>parameter, as per the Dynamic Inventory guidelines - The
--environment <ENVIRONMENT>parameter, which I added to the ones required by Ansible to manage the different Environments
- 无论是
--list参数或--host <HOST>参数，按照该动态清单指南 - 该
--environment <ENVIRONMENT>参数，我添加到 Ansible 管理不同环境所需的参数中
回答by Rahul Patil
I had similar issue, I didn't find any solution, so I just modified my dynamic inventory to use OS Environment variable if the user does not pass --env
我有类似的问题，我没有找到任何解决方案，所以我只是修改了我的动态清单以使用 OS Environment 变量，如果用户没有通过 --env
Capture env var in your inventory as below:
在您的清单中捕获 env var，如下所示：
import os
print os.environ['ENV']
import os
print os.environ['ENV']
Pass env var to ansible
将 env var 传递给 ansible
export ENV=dev
ansible -i my_custom_inv.py all --list-host
export ENV=dev
ansible -i my_custom_inv.py all --list-host
回答by punkabbestia
A workaround using $PPIDto parse -e/--extra-varsfrom process snapshot.
$PPID用于解析-e/--extra-vars来自进程快照的解决方法。
ansible-playbook -i inventory.sh deploy.yml -e cluster=cl_01
inventory.shfile
inventory.sh文件
#!/bin/bash
if [[ != "--list" ]]; then exit 1; fi
extra_var=`ps -f -p $PPID | grep ansible-playbook | grep -oh "\w*=\w*" | grep cluster | cut -f2 -d=`
./inventory.py --cluster $extra_var
inventory.pyreturns JSONinventory for cluster cl_01.
inventory.py返回JSONcluster 的库存cl_01。
Not pretty I know, but works.
不漂亮，我知道，但有效。
