Trouble with regex_replace

[Yuval Mund]

Hello,

I'm having trouble parsing a string.

The situation:

- parameters:

full: ['hostname1:abcdefg1','hostname2:-vip2','hostname3:abc-vip3']

It is required of me to have a parameter/list of hostnames without the rest of the string

i.e 

just_hostnames: ['hostname1','hostname2','hostname3']

I tried using using regex_replace like this

just_hostnames: "{{ full | regex_replace(':(?(?!'))*', '') }}"

But i got the error -
template error while templating string expected token 'end of print statement', got '.'.

If you need further information about the usecase please ask!

Thank you very much!!

[Kai Stian Olstad]

On 26.01.2017 15:51, Yuval Mund wrote:
> I'm having trouble parsing a string.
>
> The situation:
> - parameters:
>
> full: ['hostname1:abcdefg1','hostname2:-vip2','hostname3:abc-vip3']
>
> It is required of me to have a parameter/list of hostnames without the
> rest
> of the string
> i.e
> just_hostnames: ['hostname1','hostname2','hostname3']
>
> I tried using using regex_replace like this
> just_hostnames: "{{ full | regex_replace(':(?(?!'))*', '') }}"
>
> But i got the error -
> template error while templating string expected token 'end of print
> statement', got '.'.

Because full is a list you can't do it like this since regex_replace
don't work with lists.

Bu you can do something like this.

- set_fact:
loop_item: "{{ item.split(':')[0] }}"
register: loop_result
with_items: "{{ full }}"

- set_fact:
just_hostnames: "{{ loop_result.results |
map(attribute='ansible_facts.loop_item') | list }}"

--
Kai Stian Olstad