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Ansible

# 以 JSON 格式返回结果
# 修改配置文件 ansible.cfg
[defaults]
callback_whitelist=json
stdout_callback=json

# 通过环境变量 
ANSIBLE_CALLBACK_WHITELIST=json ANSIBLE_STDOUT_CALLBACK=json ansible-playbook ...

# 修改并发数
# ansible.cfg
[defaults]
forks=50

# 命令行参数
ansible-playbook site.yaml --forks 50

# 自定义参数
my_hostname ansible_host=192.168.12.34

问题

ansible 2.x sudo regression on old systems

# in 1.9x (ansible.cfg)
sudo_flags = -H

# in 2.x
sudo_flags = -H -S -n

# 配置是使用的 python 解析器
# in the scope of a task
- hosts: test_server
  tasks:
    - name: install pip
      apt:
        name: python-pip
      vars:
        ansible_python_interpreter: /usr/bin/python2

# or in the scope of a play
- hosts: test_server
  vars:
    ansible_python_interpreter: /usr/bin/python
  tasks:
    - name: install pip
      apt:
        name: python-pip

# or global
- set_fact:
    ansible_python_interpreter: /usr/bin/python3
  when: 
    - ansible_distribution == 'Kylin Linux Advanced Server'

参考

  1. 8 ways to speed up your Ansible playbooks
  2. ansible 2.x sudo regression on old systems
  3. Is it possible to combine jinja templates in ansible like this is possible with erbs in puppet?
  4. how can I specify the version of Python to use in an Ansible playbook?
  5. ansible_python_interpreter is not templated before use