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O'Reilly Platform
book
可编程网络自动化
by
Jason Edelman
,
Scott S. Lowe
,
Matt Oswalt
January 2023
Intermediate to advanced
458 pages
14h 16m
Chinese
Posts & Telecom Press
Content preview from
可编程网络自动化
362
|
第
9
章
9.4.4
传感器和触发器
动作和工作流各有用处,但为了实现事件驱动自动化,需要采集基础设施相关的信息并识
别何时会发生可操作的事件。这是通过传感器和触发器实现的。传感器是少量
Python
代
码,通过定期轮询
REST
API
或订阅消息队列等方式将外部数据带入
StackStorm
。
StackStorm
还允许配置传入的
webhook
,使得外部系统能够向
StackStorm
“推送”事件(传感器提供了更多的“拉取”式集成模型)。
传感器是首选的集成方法,因为其集成效果更细化且更紧密,但是
webhook
提供了一种简单的集成机制,使你可以快速地将数据输入
StackStorm
。当所
用的系统尚未建立传感器或只提供了外向(
outgoing
)
webhook
作为集成机
制时,这会很有帮助。
使用
st2 sensor list
可以查看系统可用的传感器(出于简洁性考虑,使用
-pack
选项限
制仅查看
napalm
包
)。
vagrant@st2vagrant:~$ st2 sensor list --pack=napalm
+-------------------------+--------+----------------------------------------------+---------+
| ref | pack | description | enabled |
+-------------------------+--------+----------------------------------------------+---------+ ...
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Publisher Resources
ISBN: 9787115606181