Ansible Convert List to String
-
Gineesh Madapparambath
- Ansible, Automation, Dev ops
- November 26, 2021
I noticed many users are using different and wrong methods to convert a list data to string format. You can use existing filters and functions in Ansible to achieve the same.
Here is our list
vars:
my_list:
- "apple"
- "mango"
- "orange"
Now we need to convert this to a single string with comma separated (or separated by any other character). I found users are using loops and adding to a string value but there is a simple way to do this as shown below.
- name: Concatenate a list to string
set_fact:
my_string: "{{ my_list | join(',') }}"
Find the full playbook below.
---
- name: List to String Conversion
hosts: localhost
vars:
my_list:
- "apple"
- "mango"
- "orange"
tasks:
- name: Print the List
debug:
msg: "{{ my_list }}"
- name: Concatenate a list to string
set_fact:
my_string: "{{ my_list | join(',') }}"
- name: Print the String
debug:
msg: "{{ my_string }}"
Sample execution
$ ansible-playbook site.yml
PLAY [List to String Conversion] *********************************************************************************
TASK [Gathering Facts] *******************************************************************************************
ok: [localhost]
TASK [Print the List] ********************************************************************************************
ok: [localhost] => {
"msg": [
"apple",
"mango",
"orange"
]
}
TASK [Concatenate a list to string] ******************************************************************************
ok: [localhost]
TASK [Print the String] ******************************************************************************************
ok: [localhost] => {
"msg": "apple,mango,orange"
}
PLAY RECAP *******************************************************************************************************
localhost : ok=4 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
Check Ansible Real Life GitHub repository for all use cases.
Want to learn Ansible from scratch ? Check you YouTube Playlist.
Gineesh Madapparambath
Gineesh Madapparambath is the founder of techbeatly. He is the co-author of The Kubernetes Bible, Second Edition and the author of Ansible for Real Life Automation. He has worked as a Systems Engineer, Automation Specialist, and content author. His primary focus is on Ansible Automation, Containerisation (OpenShift & Kubernetes), and Infrastructure as Code (Terraform). (Read more: iamgini.com)
Note
Disclaimer: The views expressed and the content shared in all published articles on this website are solely those of the respective authors, and they do not necessarily reflect the views of the author’s employer or the techbeatly platform. We strive to ensure the accuracy and validity of the content published on our website. However, we cannot guarantee the absolute correctness or completeness of the information provided. It is the responsibility of the readers and users of this website to verify the accuracy and appropriateness of any information or opinions expressed within the articles. If you come across any content that you believe to be incorrect or invalid, please contact us immediately so that we can address the issue promptly.
