This is not "python in ansible". This is jinja2 templating which is a fully
supported feature of ansible.
Walter
--
Walter Rowe, Division Chief
Infrastructure Services, OISM
Mobile: 202.355.4123
On Jul 20, 2023, at 7:53 AM, Deepak B K <deepa...@gmail.com> wrote:
I appreciate the immediate help . But my client don't want use python in the
ansible just wanted to know can we use ansible loop and condition to
determine the match group_names?
Thanks
Deepak Kumar
On Thursday, July 20, 2023 at 5:48:51 AM UTC+5:30 Todd Lewis wrote:
Deepak,
Here's a playbook that demonstrates one way to do it. I tried lots of incorrect
Jinja2 expressions that failed to achieve the final output before going back to
iterative loops. It feels like the subelements lookup should be part of the
solution, and that is shown below. However, it's actually more straightforward
to do old-school looping over your original data to find the matching group
names, and that's what the second set_fact task does.
If there is a way to express this with Jinja2 filters, it's unintuitive enough
to me that I wouldn't want to maintain it anyway. I can read the loops and make
some sense out of it, so that's the way I'd go.
[utoddl@tango ansible]$ cat test-subelements3.yml
---
- name: Demo set_fact over subelements
hosts: localhost
gather_facts: false
vars:
vm_name: NED-DEV601-X
vm_drs_groups:
- group_name: VM2-on-dev
vms:
- deep-test
- NED-DEV601-X
type: vm
- group_name: VM2-on-uat
vms:
- NED-TST601-X
type: vm
- group_name: VM2-on-qa
vms:
- deep-test
- NED-DEV601-X
type: vm
tasks:
- name: Show the list generated by the subelements lookup
ansible.builtin.debug:
msg: "{{ lookup('subelements', vm_drs_groups, 'vms') }}"
- name: Iterate over subelements to gather the group_names for {{ vm_name }}
ansible.builtin.set_fact:
match_vm_group: |
{% set matching_groups = [] %}
{% for vm_by_group_name in lookup('subelements', vm_drs_groups,
'vms') %}
{% if vm_by_group_name[1] == vm_name %}
{% set _ =
matching_groups.append(vm_by_group_name[0].group_name) %}
{% endif %}
{% endfor %}{{ matching_groups }}
- name: Same thing without subelements
ansible.builtin.set_fact:
match_vm_group: |
{% set matching_groups = [] %}
{% for vm_drs_group in vm_drs_groups %}
{% if vm_name in vm_drs_group.vms %}
{% set _ = matching_groups.append(vm_drs_group.group_name) %}
{% endif %}
{% endfor %}{{ matching_groups }}
[utoddl@tango ansible]$ ANSIBLE_STDOUT_CALLBACK=yaml ansible-playbook
test-subelements3.yml -v
Using /etc/ansible/ansible.cfg as config file
PLAY [Demo set_fact over subelements]
***********************************************************
TASK [Show the list generated by the subelements lookup]
****************************************
ok: [localhost] =>
msg:
- - group_name: VM2-on-dev
type: vm
- deep-test
- - group_name: VM2-on-dev
type: vm
- NED-DEV601-X
- - group_name: VM2-on-uat
type: vm
- NED-TST601-X
- - group_name: VM2-on-qa
type: vm
- deep-test
- - group_name: VM2-on-qa
type: vm
- NED-DEV601-X
TASK [Iterate over subelements to gather the group_names for NED-DEV601-X]
**********************
ok: [localhost] => changed=false
ansible_facts:
match_vm_group:
- VM2-on-dev
- VM2-on-qa
TASK [Same thing without subelements]
***********************************************************
ok: [localhost] => changed=false
ansible_facts:
match_vm_group:
- VM2-on-dev
- VM2-on-qa
PLAY RECAP
**************************************************************************************
localhost : ok=3 changed=0 unreachable=0 failed=0
skipped=0 rescued=0 ignored=0
Cheers,
--
Todd
On 7/19/23 7:31 AM, Deepak B K wrote:
Hi Team,
I am trying to loop with a condition to match vm_name for all the VM groups I
see that the loop stops at the first instance match . I need help how can I run
the loop for all the vm group name in the variable output to match vm_name
and extract the match group names in the list
for example:
"vm_drs_groups": "“[{'group_name': VM2-on-dev', 'vms': ['deep-test',
'NED-DEV601-X'], 'type': 'vm'}, {'group_name': 'VM2-on-uat', 'vms':
['NED-TST601-X'], 'type': 'vm'}, {'group_name': VM2-on-qa', 'vms':
['deep-test', 'NED-DEV601-X'], 'type': 'vm'}
}
If vm_name = 'NED-DEV601-X' I have two match group name but my logic stops
after the first match how can I search for all the groups in the register
variable.
- name: set fact specific VM group
ansible.builtin.set_fact:
vm_drs_groups: “{{ group_info.drs_group_info[vcenter_env.cluster] |
selectattr('type', '==', "vm" ) | list }}”
- name: "Set facts to specific VM groups for matching vm name"
ansible.builtin.set_fact:
match_vm_group: "{{ item.group_name }}"
when: item | regex_search(vm_name)
loop: "{{ vm_drs_groups }}"
I appreciate any help.
Thanks and Regards,
Deepak Kumar
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