python ansible api-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_24822271/article/details/115377356

本文介绍了一种使用Ansible进行自动化部署的方法。通过定义自定义回调插件来处理执行过程中的输出，实现了对主机状态的实时监控。同时，文章展示了如何配置动态库存以适应不断变化的环境。

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from ansible.cli.playbook import PlaybookCLI
from ansible.plugins.callback import CallbackBase
import json
from ansible.cli import CLI
from ansible.executor.playbook_executor import PlaybookExecutor
from ansible import config
from ansible import constants as C
from ansible.playbook.play_context import PlayContext
import ansible


class ResultCallback(CallbackBase):
    """A sample callback plugin used for performing an action as results come in

    If you want to collect all results into a single object for processing at
    the end of the execution, look into utilizing the ``json`` callback plugin
    or writing your own custom callback plugin
    """
    def v2_runner_on_ok(self, result, **kwargs):
        """Print a json representation of the result

        This method could store the result in an instance attribute for retrieval later
        """
        host = result._host
        print(json.dumps({host.name: result._result}, indent=4))


    def v2_runner_on_failed(self, result, **kwargs):
      host = result._host.get_name()
      self.runner_on_failed(host, result._result, False)
      print('===v2_runner_on_failed====host=%s===result=%s'%(host,result._result))

    def v2_runner_on_unreachable(self, result):
      host = result._host.get_name()
      self.runner_on_unreachable(host, result._result)
      print('===v2_runner_on_unreachable====host=%s===result=%s'%(host,result._result))

    def v2_runner_on_skipped(self, result):
        if C.DISPLAY_SKIPPED_HOSTS:
         host = result._host.get_name()
         self.runner_on_skipped(host, self._get_item(getattr(result._result,'results',{})))
         print("this task does not execute,please check parameter or condition.")

    def v2_playbook_on_stats(self, stats):
        print ("changed:%s" %stats.changed)
        print ("ok:%s" %stats.ok)
        print ("processed:%s" %stats.processed)
        print ("failures:%s" %stats.failures)
        print ("skipped:%s" %stats.skipped)
        print('===========play executes completed========')
# Ansible Inventory实际上是包含静态Inventory和动态Inventory两部分，静态Inventory指的是在文件/etc/ansible/hosts中指定的主机和组，Dynamic Inventory指通过外部脚本获取主机列表，并按照ansible 所要求的格式返回给ansilbe命令的。
# 静态inventory
# cli = PlaybookCLI([" ","-i","/root/mtest/inventory.ini","-e", "@/etc/openstack_deploy/user_secrets.yml","-e", "@/etc/openstack_deploy/user_variables.yml", '/root/mtest/test.yml'])
# 动态inventory
cli = PlaybookCLI([" ","-i","/opt/openstack-ansible/inventory/dynamic_inventory.py","-e", "@/etc/openstack_deploy/user_secrets.yml","-e", "@/etc/openstack_deploy/user_variables.yml", '/root/mtest/test.yml'])
cli.parse()

super(PlaybookCLI,cli).run()

loader, inventory, variable_manager = cli._play_prereqs(cli.options)

# CLI.get_host_list(inventory, )
# CLI.get_host_list(inventory, cli.args)
# playbooks, inventory, variable_manager, loader, options, passwords
pbex = PlaybookExecutor(playbooks=cli.args, inventory=inventory,
                                variable_manager=variable_manager, loader=loader,options=cli.options,
                                passwords=None)

pbex._tqm._stdout_callback = ResultCallback()
result = pbex.run()