Inventory中的变量

Variables in Inventory

host variables

assign variable to one machine

group variables

apply variable to an entire group

Apply variable for groups of groups

A child group’s variables will override a parent group’s variables.

precedence

Child > Parent

parent group variables

child group variables

host variables

ASCII order, Last > Previous

variables files

File extensions

.yml .yaml. .json. or no file extension

File location

searching paths relative to the inventory file

Assuming inventory file

/etc/ansible/hosts

Variables files

/etc/ansible/host_vars/football.yml

/etc/ansible/group_vars/webservers.yml

/etc/ansible/group_vars/raleigh/db_settings

/etc/ansible/group_vars/raleigh/cluster_settings

Control how Ansible interacts with remote hosts

Host connection

General for all connections

Specific to the SSH connection

Privilege escalation

Remote host environment parameters

Non-SSH Connection