when condition on a variable starting with a string value

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1

Hello,

Actually I wrote my playbook this way to set values id the dual variable is the string value SRV:

  • set_fact:
    distrib: “{{ distribsrv }}”
    Directoryname: “{{ Directorysrv }}”
    when: dual == ‘SRV’

I would like to modify the when condition to run it when dual == ‘SRV1’, "SRV2’ … etc, is there a way to do a when condition : when : dual like ‘SRV*’ ?

2

I wrote this:

vars:
services:

  • SRV

  • SRV[1:99]

  • set_fact:
    distrib: “{{ distribsrv }}”
    when: dual in services

but dual is SRV2 and the set_fact module has been ignored

3

if I write this, i do not get a variable list:

  • set_fact:
    services: “{{ services + item }}”
    with_sequence: count=99
  • debug: msg=“sequence {{ services }}”

ok: [SRV1] => {
“msg”: “sequence SRV123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899”
}

the result expected is SRV1, SRV2, SRV3 …

4

My issue is: I would like to run a task when a variable start with ‘SRV’ (srv1, SRV2 …) ad I don’t know how to write the condition: when: dual like ‘SRV*’

5

I know this is weird, but can't think of something better:

   - set_fact:
      distrib: "{{ distribsrv }}"
      Directoryname: "{{ Directorysrv }}"
     when: dual | regex_replace( '^SRV.*', 'True') | bool

Cheers,
Marko
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6

thank you I will have a look at your solution, I finally found this way to proceed otherwise:

  • set_fact:
    services: “{{ services }} + SRV{{item }}”

with_sequence: count=5

  • set_fact:
    distrib: “{{ distribsrv }}”
    when: dual in services

TASK [debug] *******************************************************************
ok: [SRV1] => {
“msg”: “sequence SRV + SRV1 + SRV2 + SRV3 + SRV4 + SRV5”
}

7

Thanks a lot Marko, I used your syntax:
dual>regex_replace(‘^SRV(.*)’, ‘True’)

8

Thanks a lot Marko, I used your syntax:
dual>regex_replace('^SRV(.*)', 'True')

Did you try the following?

No need to use regex for pattern searching. You can use search like
this:

when: name_prefix | search("stage-dbs")

from
https://stackoverflow.com/questions/34429842/how-to-evaluate-a-when-condition-for-ansible-task

In your case this should be:

when: dual | search("SRV")

Johannes