> On Tue, Dec 27, 2022 at 7:04 AM Know-Your-Tech <[email protected]> wrote: > > > > ansible-playbook -i /web/aes/admin/playbooks/updated.hosts > > /web/aes/admin/playbooks/split.yml -e ENV=qa -e NODE=cluster -e > > instance_name=APP1,APP2 > > > > Playbook: > > > > --- > > - hosts: "{{ [ENV] | product(instance_name.split(',')) | product([NODE]) | > > product(['wladmin_mmsplit'])|map('flatten')|map('join', '_') }}"
Put the logic into the inventory plugin *constructed*. See
shell> ansible-doc -t inventory ansible.builtin.constructed
In the example below, I'll use another inventory plugin *generator*
which you don't need because you obviously have another source of the
inventory. When you try the code below in your environment use this
source instead of 02-generator.yml. See
shell> ansible-doc -t inventory ansible.builtin.generator
I've ignored the case of the parameters.
1) Create the inventory
shell> tree inventory/
inventory/
├── 01-hosts
├── 02-generator.yml
└── 03-constructed.yml
shell> cat inventory/01-hosts
localhost
shell> cat inventory/02-generator.yml
plugin: ansible.builtin.generator
hosts:
name: "{{ env }}_{{ instance }}_{{ node }}_{{ ext }}"
layers:
env:
- dev
- qa
- prod
instance:
- app1
- app2
node:
- cluster1
- cluster2
ext:
- wladmin_mmsplit
shell> cat inventory/03-constructed.yml
plugin: ansible.builtin.constructed
use_extra_vars: true
compose:
layer_env: ENV.split(',')
layer_node: NODE.split(',')
layer_instance: instance_name.split(',')
groups:
my_group: inventory_hostname.split('_').0 in layer_env and
inventory_hostname.split('_').1 in layer_instance and
inventory_hostname.split('_').2 in layer_node
2) Test inventory
shell> ansible-inventory -i inventory --list --yaml
all:
children:
ungrouped:
hosts:
dev_app1_cluster1_wladmin_mmsplit: {}
dev_app1_cluster2_wladmin_mmsplit: {}
dev_app2_cluster1_wladmin_mmsplit: {}
dev_app2_cluster2_wladmin_mmsplit: {}
localhost: {}
prod_app1_cluster1_wladmin_mmsplit: {}
prod_app1_cluster2_wladmin_mmsplit: {}
prod_app2_cluster1_wladmin_mmsplit: {}
prod_app2_cluster2_wladmin_mmsplit: {}
qa_app1_cluster1_wladmin_mmsplit: {}
qa_app1_cluster2_wladmin_mmsplit: {}
qa_app2_cluster1_wladmin_mmsplit: {}
qa_app2_cluster2_wladmin_mmsplit: {}
3) Test inventory group *my_group*
shell> ansible-inventory -i inventory --list --yaml -e ENV=qa -e NODE=cluster2
-e instance_name=app1,app2
all:
children:
my_group:
hosts:
qa_app1_cluster2_wladmin_mmsplit:
ENV: qa
NODE: cluster2
instance_name: app1,app2
layer_env:
- qa
layer_instance:
- app1
- app2
layer_node:
- cluster2
qa_app2_cluster2_wladmin_mmsplit:
ENV: qa
NODE: cluster2
instance_name: app1,app2
layer_env:
- qa
layer_instance:
- app1
- app2
layer_node:
- cluster2
ungrouped:
hosts:
dev_app1_cluster1_wladmin_mmsplit:
...
4) Use *my_group* in a playbook
shell> cat pb.yml
- hosts: my_group
tasks:
- debug:
var: ansible_play_hosts_all
run_once: true
shell> ansible-playbook -i inventory -e ENV=qa -e NODE=cluster2 -e
instance_name=app1,app2 pb.yml
PLAY [my_group]
*****************************************************************
TASK [debug]
*****************************************************************
ok: [qa_app1_cluster2_wladmin_mmsplit] =>
ansible_play_hosts_all:
- qa_app1_cluster2_wladmin_mmsplit
- qa_app2_cluster2_wladmin_mmsplit
...
5) The items added to the inventory (02-generator.yml in this example)
instance:
- app1
- app2
- app3-brazil
will be automatically available for selection
shell> ansible-playbook -i inventory -e ENV=qa -e NODE=cluster2 -e
instance_name=app1,app3-brazil pb.yml
PLAY [my_group]
******************************************************************************
TASK [debug]
*********************************************************************************
ok: [qa_app1_cluster2_wladmin_mmsplit] => ansible_play_hosts_all:
- qa_app1_cluster2_wladmin_mmsplit
- qa_app3-brazil_cluster2_wladmin_mmsplit
...
--
Vladimir Botka
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