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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
自动化工具
|
325
别忘了
top
文件也是
SLS
,因此默认仍为
Jinja
和
YAML
的组合体,可用于
生成动态映射。如果有一个比较长的区域列表,则上一个例子可以写作如下
形式。
base:
'G@vendor:juniper':
- junos
'G@os:ios and G@version:16*'
- ios_16
'E@(.*)-spine(\d)':
- spine
{% for region in ['emea', 'amers', 'apac'] -%}
'N@{{ region }}':
- communities_{{ region }}
{% endfor -%}
尽管我们的重点只是
Salt
入门,但你应该知道可以集成
Salt
来使用提供更多
动态
top
的外部系统。你可以使用外部服务,而非单个
top
文件。如果你在
其他内部系统或工具中已经有了清单或分组,则这会很有帮助。
4.
理解
grains
前面提到过
grains
,这里会对其做更详细的讲解
。记住,我们已经在
SLS
文件中定义过
pillar
。所以说,
pillar
是用户提供的数据。相比之下,
grains
描述的是
Salt
采集的数据。
grains
是
Salt
采集的有关特定设备的信息
,比如设备厂商、型号、序列号、操作系统版本、
内核、
DNS
、磁盘
、
GPU
以及正常运行时间(
uptime
)。你无须对这些数据做任何操作,
但应该知道它们的存在,因为其有
很多
用途。例如,前面已经展示过如何在
top
文件中使
用
grains
。还可以将其用于模板、条件语句和报表。 ...
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Publisher Resources
ISBN: 9787115606181