ansible 中的多个嵌套循环 [英] Multiple nested loops in ansible
问题描述
我正在尝试遍历存储在字典中的列表,该列表是另一个列表的一部分.我的剧本是这样的:
I am trying to loop over a list, which is stored in a dict, which is part of another list. my playbook looks like this:
---
- hosts: all
vars:
copy_certs:
- { domain: 'domainname', copy_to: ['/tmp/foo', '/tmp/bar'], restart: [["mailhost", "postfix"], ["mailhost", "dovecot"]] }
- { domain: 'domainname2', copy_to: ['/tmp/foo2', '/tmp/bar2'], restart: [["mail.lxc", "postfix"]] }
tasks:
[...]
- name: Copy Private Key
register: copied_key
copy: src=/etc/letsencrypt/live/{{ item.0.domain }}/privkey.pem dest="{{ item.1 }}/"
with_subelements:
- copy_certs
- copy_to
- name: Debug (here should be delegates to "item.restart.NUM.0" to restart "item.restart.NUM.1" with_subelements: ...)
debug: var=item
with_items: copied_key.results
现在我正在迭代列表,因为 ansible 似乎不支持真正的嵌套,而只是两个嵌套循环的一些预定义结构.
Now i am stack at iterating over the lists, as ansible seems not to support real nesting, but just a few predefined structures for two nested loops.
我需要类似的东西(不起作用):
i would need something like (does not work):
with_subelements:
- copied_key.results
- item.domain.restart
或(子元素语法错误):
or (wrong syntax for subelements):
with_subelements:
- copied_key.results
- item.domain
- restart
我已经尝试使用冗余列表:
I already tried to use an redundant list:
vars:
restart_services:
domainname: [["mailhost", "postfix"]]
tasks:
- name: Debug
debug: var=restart_services[item.item.0.domain]
with_items: copied_key.results
正如你所见,item.item
已经开始变得丑陋了.
as you see it already starts being ugly with item.item
.
它需要类似
register: [to_restart for to_restart in item['restart']] as services_to_rstart
- debug: var=item # item.0 = hostname item.1 = servicename
with_items: services_to_restart
或者如果它不需要是列表就可以迭代它甚至 item.hostname
而不是元组(实际上是列表).
or if it does not need to be lists to be able to iterate over it even item.hostname
instead of tuples (actually lists).
最好有一些方法来指定带有嵌套的循环,而不是使用像 with_subelements
这样的预制过滤器.
It would be really good to have some way to specify loops with nesting instead of using premade filters like with_subelements
.
推荐答案
您是否尝试过使用with_nested"?您可以查看 Ansible 文档.
Have you tried using "with_nested"? You can check out the Ansible documentation.
这可能有效:
- name: Copy Private Key
register: copied_key
copy: src=/etc/letsencrypt/live/{{ item[0].domain }}/privkey.pem dest="{{ item[1] }}/"
with_nested:
- copy_certs
- copy_certs.copy_to
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