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Ansible Notes

Documentation for each module can be accessed from the command line with the ansible-doc tool:

$ ansible-doc yum

A list of all installed modules is also available:

$ ansible-doc -l

$ ansible-playbook playbook.yml --list-hosts

$ ansible-playbook $WORKSPACE/cicd/ansible/account-api-container.yml --extra-vars "repository=$REPOSITORY image_name=$IMAGE_NAME image_version=$IMAGE_VERSION"

ansible -m debug -a "var=hostvars['hostname']" localhost

如果我们不需要收集主机的信息请使用gather_facts: False

- hosts: os_CentOS
  gather_facts: False
  tasks:
     - # tasks that only happen on CentOS go here

docker

如果报错：

"Error: docker-py version is 1.10.2. Minimum version required is 1.7.0."

这是个bug: docker-py version is checked incorrectly #17495

ansible/ansible#17496 修改的文件为：/usr/lib/python2.7/site-packages/ansible/module_utils/docker_common.py

用ansible安装docker engine时一定不要忘记设置开机自动启动！

Host key checking

在/etc/ansible/ansible.cfg里可以禁用。

https://stackoverflow.com/a/23094433

#Become 有些操作需要root权限，而如果你希望用sudo来做，可以在ansible.cfg里配置一下。 become: yes become_method: sudo