问题
I have a use case where I need to create a directory in all hosts in a group whose name will be the name of the group.
Eg : I create a dynamic inventory file with output of the form :
{
"db": ["host1", "host2", "host3"],
"logs": ["host2"],
"misc": ["host4"]
}
I need to create a directory by the name db in every host of the group db and directory named log in every host of the group log.
My playbook so far looks like :
- hosts: db
tasks:
- name: create db directory
file: path=db state=directory
- hosts: logs
tasks:
- name: create logs directory
file: path=logs state=directory
The number of groups is at least 10+. This may grow in the future. I want to write something that will be easily extendable and manageable for the future groups.
I read that ansible doesn't provide a default fact or variable for group name for the task. I see that this can be best done if I provide a variable like groupname in host.
Is there a better solution that could use looping instead of repeating the same task?
回答1:
You can use the magic variable group_names. The variable is a list (array) of all the groups the current host is in. More information is available per the documentation
- hosts: all
tasks:
- name: create db directory
file:
path: "{{ item }}"
state: directory
with_items: "{{ group_names }}"
Disclaimer: Did not test this code.
来源：https://stackoverflow.com/questions/49390513/how-do-you-get-group-name-of-the-executing-role-in-ansible