This will work, but it's not idempotent.
So if you run it again it will add the two CIDRs again.
For it to work idempotently, the regex will need to match both what
you have before and what you get after.
Something like this should work:
---
- hosts: localhost
connection: local
gather_facts: false
vars:
cidrs:
- 1.1.1.1/255.255.255.255
- 2.2.2.2/255.255.255.255
tasks:
- name: "insert values to a list"
lineinfile:
dest: /tmp/test.txt
regexp: "^(?P<start>ALL:.*?)((,{{ cidrs | join(',') }})*)$"
line: "\\g<start>,{{ cidrs | join(',') }}"
backrefs: yes
The named group 'start' is to avoid clashing with a CIDR that begins
with a number.
Dick
On Thu, 12 Sep 2019 at 09:15, Shivharsh Singh <[email protected]> wrote:
>
> Hello Morrissey,
>
> You may use the below playbook to fulfill your requirements. It makes use of
> lineinfile module with regular expression to capture the line to be modified.
>
> ---
> - hosts: localhost
> connection: local
> gather_facts: false
> tasks:
> - name: "insert values to a list"
> lineinfile:
> dest: /opt/test.txt
> regexp: '(^ALL.*$)'
> line: '\1, {{item}}'
> backrefs: yes
> with_items:
> - 1.1.1.1/255.255.255.255
> - 2.2.2.2/255.255.255.255
>
> The file would be modified as shown below:
> Hello world !
> ALL, 1.1.1.1/255.255.255.255, 2.2.2.2/255.255.255.255
> This is a test file
>
> Hope this is helpful !
>
> Thanks,
> Shivharsh
>
> On Wednesday, 11 September 2019 19:36:27 UTC+5:30, TheSmiths wrote:
>>
>> Hi,
>>
>> I would like to use lineinfile module to do the next:
>>
>> 1. go over list of items (with_items)
>> 2. look for specific line that always starts with the word "ALL:"
>> (hosts.allow)
>> 3. append each item at the END of the line with comma before the item
>>
>> for example
>>
>> ALL ,1.1.1.1/255.255.255.255 , 2.2.2.2/255.255.255.255
>>
>> Thanks,
>> Morrissey
>>
>>
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--
Dick Visser
Trust & Identity Service Operations Manager
GÉANT
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