Ansible list variable

Ansible uses variables to manage differences between systems. we can define these variables in our playbooks, in our inventory, in re-usable files or roles, or at the command line. we can also create variables during a playbook run by registering the return value or values of a task as a new variable.

A list variable combines a variable name with multiple values. The multiple values can be stored as an itemized list or in square brackets [], separated with commas.

Let's see an example of an ansible-playbook for list variables.

# cat listvariable.yaml

---

- hosts: all

vars:

teams:

- csk

- srh

- mi

- rcb

tasks:

- name: pring list variables

debug:

msg="{{ teams[0] }}"

Then run the playbook

# ansible-playbook -i hosts listvariable.yaml

PLAY [all] **************************************************************************************************************************************************

TASK [Gathering Facts] **************************************************************************************************************************************

ok: [192.168.1.2]

TASK [pring list variables] *********************************************************************************************************************************

ok: [192.168.1.2] => {

"msg": "csk"

}

PLAY RECAP **************************************************************************************************************************************************

192.168.1.2 : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0

Another example of list variable

# cat listvar.yaml

---

- hosts: all

vars:

teams:

- csk

- srh

- mi

- rcb

tasks:

- name: pring list variables

debug:

msg="{{ item }}"

with_items:

- "{{ teams }}"

# ansible-playbook -i hosts listvariable2.yaml

PLAY [all] **************************************************************************************************************************************************

TASK [Gathering Facts] **************************************************************************************************************************************

ok: [192.168.1.2]

TASK [pring list variables] *********************************************************************************************************************************

ok: [192.168.1.2] => (item=csk) => {

"msg": "csk"

}

ok: [192.168.1.2] => (item=srh) => {

"msg": "srh"

}

ok: [192.168.1.2] => (item=mi) => {

"msg": "mi"

}

ok: [192.168.1.2] => (item=rcb) => {

"msg": "rcb"

}

PLAY RECAP **************************************************************************************************************************************************

192.168.1.2 : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0

Relevant Blogs:

Ansible tower

Ansible Vault

Ansible loops

Aws ec2 volume snapshot

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