ansible playbook支持的atrributes

ansible这个工具的官方文档其实做得特别不好。不仅没有搜索功能，而且对于playbook的各种属性居然没有介绍，特别是gather_facts:这种属性，在特定的场景下关掉是可以减少很多等待时间的。

因为文档上没有，所以基本只能看代码。

# =================================================================================# Connection-Related Attributes# TODO: generalize connection_accelerate          = FieldAttribute(isa='bool', default=False, always_post_validate=True)_accelerate_ipv6     = FieldAttribute(isa='bool', default=False, always_post_validate=True)_accelerate_port     = FieldAttribute(isa='int', default=5099, always_post_validate=True)# Connection_gather_facts        = FieldAttribute(isa='bool', default=None, always_post_validate=True)_gather_subset       = FieldAttribute(isa='barelist', default=None, always_post_validate=True)_gather_timeout      = FieldAttribute(isa='int', default=None, always_post_validate=True)_hosts               = FieldAttribute(isa='list', required=True, listof=string_types, always_post_validate=True)_name                = FieldAttribute(isa='string', default='', always_post_validate=True)# Variable Attributes_vars_files          = FieldAttribute(isa='list', default=[], priority=99)_vars_prompt         = FieldAttribute(isa='list', default=[], always_post_validate=True)_vault_password      = FieldAttribute(isa='string', always_post_validate=True)# Role Attributes_roles               = FieldAttribute(isa='list', default=[], priority=90)# Block (Task) Lists Attributes_handlers            = FieldAttribute(isa='list', default=[])_pre_tasks           = FieldAttribute(isa='list', default=[])_post_tasks          = FieldAttribute(isa='list', default=[])_tasks               = FieldAttribute(isa='list', default=[])# Flag/Setting Attributes_any_errors_fatal    = FieldAttribute(isa='bool', default=False, always_post_validate=True)_force_handlers      = FieldAttribute(isa='bool', always_post_validate=True)_max_fail_percentage = FieldAttribute(isa='percent', always_post_validate=True)_serial              = FieldAttribute(isa='list', default=[], always_post_validate=True)_strategy            = FieldAttribute(isa='string', default=C.DEFAULT_STRATEGY, always_post_validate=True)# =================================================================================

还可以通过命令的方式：

python -c 'import ansible.playbook.play as P; print P.Play()._valid_attrs.keys();'['tasks', 'vars', 'become_user', 'vault_password', 'gather_subset', 'accelerate', 'diff', 'serial', 'port', 'post_tasks', 'environment', 'remote_user', 'become_method', 'gather_timeout', 'strategy', 'no_log', 'pre_tasks', 'vars_files', 'accelerate_port', 'force_handlers', 'tags', 'gather_facts', 'check_mode', 'always_run', 'run_once', 'max_fail_percentage', 'ignore_errors', 'fact_path', 'name', 'roles', 'handlers', 'any_errors_fatal', 'connection', 'hosts', 'become_flags', 'vars_prompt', 'become', 'accelerate_ipv6', 'order']