Ansible清单插件和清单脚本是用于定义Ansible清单的两种不同方式。
以下是一个示例清单插件的代码示例,用于从YAML文件中获取主机清单信息:
# my_inventory_plugin.py
from ansible.plugins.inventory import BaseInventoryPlugin
from ansible.errors import AnsibleError
import yaml
class InventoryPlugin(BaseInventoryPlugin):
NAME = 'my_inventory_plugin'
def verify_file(self, path):
''' Return true/false if this is possibly a valid file for this plugin to consume '''
return path.endswith(('my_inventory.yaml'))
def parse(self, inventory, loader, path, cache=True):
''' Return dynamic inventory from source '''
super(InventoryPlugin, self).parse(inventory, loader, path)
# Load YAML file
try:
with open(path, 'r') as f:
data = yaml.safe_load(f)
except Exception as e:
raise AnsibleError('Failed to load inventory from %s: %s' % (path, str(e)))
# Process data and add hosts to inventory
# ...
# Add groups and variables to inventory
# ...
# Add other inventory components (e.g., groups, vars, etc.) as needed
# ...
# Return inventory
return inventory
以下是一个示例清单脚本的代码示例,用于从AWS EC2获取主机清单信息:
#!/usr/bin/env python
import boto3
import json
# Connect to AWS EC2
ec2 = boto3.client('ec2')
# Get EC2 instances
response = ec2.describe_instances()
instances = response['Reservations']
# Process instances and generate inventory
inventory = {}
for instance in instances:
# Get instance details
instance_id = instance['Instances'][0]['InstanceId']
private_ip = instance['Instances'][0]['PrivateIpAddress']
# Add instance to inventory
inventory[instance_id] = {
'ansible_host': private_ip,
'ansible_user': 'ubuntu'
}
# Print inventory as JSON
print(json.dumps(inventory))
使用清单脚本时,您需要确保脚本具有可执行权限,并通过ansible.cfg
文件中的inventory
选项指定脚本的路径。
总结:清单插件和清单脚本是用于定义Ansible清单的两种不同方式。清单插件用于从不同源获取主机清单信息,并允许您自定义清单的来源和格式。清单脚本则是通过可执行脚本动态生成主机清单,允许您根据需要生成动态的主机清单。