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ansible-inventory-plugins

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ansible inventory 插件

查看inventory-plugins列表

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ansible-doc -t inventory -l

以vultr为例，查看其帮助文档和样例

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ansible-doc -t inventory vultr

inventory_vultr.yml（配置文件必须以vultr.yml或者vultr.yaml结尾）

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plugin: vultr
api_account: test@gmail.com
api_key: 33PGQLTDVPllRALLLLLLEVX24SAKBD4SNWWQ

配置文件命名规范是代码里vultr.py固化的

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165     def verify_file(self, path):
166         valid = False
167         if super(InventoryModule, self).verify_file(path):
168             if path.endswith(('vultr.yaml', 'vultr.yml')):
169                 valid = True
170         return valid

测试ansible-inventory --list -i inventory_vultr.yml（或ansible-inventory -i inventory_vultr.yml --graph）

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root@VM-0-11-ubuntu ~ #ansible-inventory --list -i inventory_vultr.yml
{
    "_meta": {
        "hostvars": {
            "jpvps": {
                "allowed_bandwidth_gb": 1000,
                "ansible_host": "156.179.95.98",
                "auto_backup_enabled": false,
                "cost_per_month": 5.0,
                "current_bandwidth_gb": 2.122,
                "date_created": "2016-05-31 04:33:20",
                "default_password": "@s8MS_XDjeA*])_C",
                "disk": "Virtual 25 GB",
                "id": "37651598",
                "internal_ip": "",
                "kvm_url": "https://my.vultr.com/subs/vps/novnc/api.php?data=djJ8R0x0QkszS2H15XVatql1se1ZQnO_EMqWKZMholJirM_8mUBzKYOL4Otw6rURpdCPzWcUji9pv8wMqKqyuhPsTaZhzIzX-171KVcPFTapn9VfFryC88xKIefBL-1wIDNRQu5e",
                ...
                ...
}

默认属于vultr

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root@VM-0-11-ubuntu ~ #ansible-inventory -i inventory_vultr.yml --graph
@all:
  |--@ungrouped:
  |--@vultr:
  |  |--jpvps

inventory_vultr.yml增加分组的一些配置

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groups:
  dev: "'vps' in name"
keyed_groups:
  - separator: ""
    key: os | lower
  - prefix: region
    key: region | lower
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root@VM-0-11-ubuntu ~ #ansible-inventory -i inventory_vultr.yml --graph
@all:
  |--@dev:
  |  |--jpvps
  |--@region_tokyo:
  |  |--jpvps
  |--@ubuntu_20_04_x64:
  |  |--jpvps
  |--@ungrouped:
  |--@vultr:
  |  |--jpvps

测试groups走了一些弯路，官方文档只给出了参数说明Add hosts to group based on Jinja2 conditionals.没给出样例

定位思路: /usr/lib/python2.7/dist-packages/ansible/plugins/inventory/vultr.py

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207             # Complex groups based on jinja2 conditionals, hosts that meet the conditional are added to group
208             self._add_host_to_composed_groups(self.get_option('groups'), server, server['name'], strict=strict)

pdb下断点: /usr/lib/python2.7/dist-packages/ansible/plugins/inventory/__init__.py

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367     def _add_host_to_composed_groups(self, groups, variables, host, strict=False):
368         ''' helper to create complex groups for plugins based on jinja2 conditionals, hosts that meet the conditional are added to group'''
369         # process each 'group entry'
370         if groups and isinstance(groups, dict):
371             variables = combine_vars(variables, self.inventory.get_host(host).get_vars())
372             self.templar.available_variables = variables
373             for group_name in groups:
374                 import pdb;pdb.set_trace()
375                 conditional = "{%% if %s %%} True {%% else %%} False {%% endif %%}" % groups[group_name]
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root@VM-0-11-ubuntu ~ #ansible-inventory -i inventory_vultr.yml --graph
> /usr/lib/python2.7/dist-packages/ansible/plugins/inventory/__init__.py(375)_add_host_to_composed_groups()
-> conditional = "{%% if %s %%} True {%% else %%} False {%% endif %%}" % groups[group_name]
(Pdb) groups[group_name]
u"'vps' in name"
(Pdb)