[root@m01 ~]# vim /etc/ansible/ansible.cfg 
# nearly all parameters can be overridden in ansible-playbook
# or with command line flags. ansible will read ANSIBLE_CONFIG,
# ansible.cfg in the current working directory, .ansible.cfg in
# the home directory or /etc/ansible/ansible.cfg, whichever it
# finds first

[root@m01 
 
~]# rpm -ql ansible
[root@m01 ~]# zcat /usr/share/man/man1/ansible-config.1.gz

#要檢視完整列表，請訪問https://docs.ansibe.com/或使用ansibe-config命令。
For a full list check \fI\%https://docs.ansible.com/\fP\&. or use the \fIansible\-config\fP command.

#/etc/ansible/ansible.cfg 配置檔案，如果存在則使用
/etc/ansible/ansible.cfg \-\- Config file, used if
 
 present

#~/.ansible.cfg 使用者配置檔案，覆蓋預設配置（如果存在）
~/.ansible.cfg \-\- User config file, overrides the default config if present

#\&/ansible.cfg 本地配置檔案（在當前工作目錄中）假定為（aqproject-specific）（aq，如果存在，則重寫其餘檔案）。
\&./ansible.cfg \-\- Local config file (in current working directory) assumed to be \(aqproject specific\(aq and overrides the rest if
 
 present.

#如上所述，ANSIBLE_CONFIG環境變數將覆蓋所有其他環境變數。
As mentioned above, the ANSIBLE_CONFIG environment variable will override all others.

總結：

#生效優先順序
ANSIBLE_CONFIG >> $ANSIBLE_CONFIG/ansible.cfg >> ~/.ansible.cfg >> /etc/ansible/ansible.cfg