如何使用Ansible嵌套变量?
问题描述:
我有一个Ansible剧本类似下面,我想使用嵌套的变量是这样的: msg={{{{Component}}.community_release_num}}
,但是当我运行剧本:如何使用Ansible嵌套变量?
ansible-playbook vartest.yml -e 'version=version_402', it not work
[[email protected] nested-var]$ tree
.
├── vars
│ ├── horizon.yml
│ └── version_402.yml
└── vartest.yml
1 directory, 3 files
[[email protected] nested-var]$ cat vartest.yml
---
- name: test
hosts: localhost
vars_files:
- vars/{{version}}.yml
tasks:
- debug: msg={{{{Component}}.community_release_num}}
- debug: msg={{{{Component}}.release_num}}
[[email protected] nested-var]$ cat vars/horizon.yml
Component: horizon
[[email protected] nested-var]$ cat vars/version_402.yml
- horizon:
community_release_num: '9.0.1'
release_num: '4.0.2'
[[email protected] nested-var]$
错误信息
[[email protected] nested-var]$ ansible-playbook vartest.yml -e 'version=version_402'
/usr/lib64/python2.6/site-packages/cryptography/__init__.py:25: DeprecationWarning: Python 2.6 is no longer supported by the Python core team, please upgrade your Python.
DeprecationWarning
PLAY [test] *******************************************************************************************************
/usr/lib64/python2.6/site-packages/Crypto/Util/number.py:57: PowmInsecureWarning: Not using mpz_powm_sec. You should rebuild using libgmp >= 5 to avoid timing attack vulnerability.
_warn("Not using mpz_powm_sec. You should rebuild using libgmp >= 5 to avoid timing attack vulnerability.", PowmInsecureWarning)
TASK [debug] ******************************************************************************************************
fatal: [localhost]: FAILED! => {"failed": true, "msg": "template error while templating string: expected token 'colon', got '}'. String: {{{{Component}}.community_release_num}}"}
to retry, use: --limit @/data/wangqian/artemis-code-test/artemis/ansible/update/nested-var/vartest.retry
PLAY RECAP ********************************************************************************************************
localhost : ok=0 changed=0 unreachable=0 failed=1
Ansible使用可嵌套的变量如果是,如何使用它?
答
另一条规则是“小胡子不叠加”。我们经常看到这样的:
{{ somevar_{{other_var}} }}
以上不工作,如果你需要使用一个动态变量使用 HOSTVARS或瓦尔适当词典:
{{ hostvars[inventory_hostname]['somevar_' + other_var] }}
所以你的情况:
- debug: msg={{hostvars[inventory_hostname][Component].community_release_num}}
或者
- debug: msg={{vars[Component].community_release_num}}
它的工作非常感谢 – qianwang