A YANG Data Model for Host Power Monitoring
draft-xiong-nmop-host-power-monitoring-yang-00
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| Document | Type | Active Internet-Draft (individual) | |
|---|---|---|---|
| Authors | Ruizhe Xiong , Chang Liu , Yue Guo | ||
| Last updated | 2024-07-08 | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
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| Stream | Stream state | (No stream defined) | |
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draft-xiong-nmop-host-power-monitoring-yang-00
nmop R. Xiong
Internet-Draft C. Liu
Intended status: Standards Track Y. Guo
Expires: 9 January 2025 China Unicom
8 July 2024
A YANG Data Model for Host Power Monitoring
draft-xiong-nmop-host-power-monitoring-yang-00
Abstract
This document will build a hierarchical YANG data model of SDN
controller/management platform, router/switch and host to monitor the
energy consumption of network devices and servers. SDN controller/
management platform obtains data from routers/switches, and routers/
switches obtain data from hosts. Therefore, in the overall
hierarchical structure, the SDN controller/management platform
directly obtains energy consumption data of all routers/switches, and
indirectly obtains the specific energy consumption data of all hosts
through routers/switches.
Status of This Memo
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Please review these documents carefully, as they describe your rights
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirement Language . . . . . . . . . . . . . . . . . . 3
2. Model Structure . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Basic Elements and Layers . . . . . . . . . . . . . . . . 3
2.2. Relationship Between Layers . . . . . . . . . . . . . . . 3
2.3. Hierarchy Representation . . . . . . . . . . . . . . . . 4
3. YANG Data Model . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. Tree Diagram . . . . . . . . . . . . . . . . . . . . . . 4
3.2. YANG Model . . . . . . . . . . . . . . . . . . . . . . . 5
4. Security Considerations . . . . . . . . . . . . . . . . . . . 6
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
6. Normative References . . . . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
In the era of computing power, the energy consumption of data centers
has increased exponentially, which is mainly reflected in IT
equipment. IT equipments account for 45% of the overall energy
consumption of data centers, of which hosts account for about 50%,
storage systems account for about 35%, and network devices account
for about 15%. Therefore, it is particularly important to focus on
the energy consumption of network devices and hosts.
This document will build a hierarchical YANG data model of SDN
controller/management platform, router/switch and host to monitor the
energy consumption of network devices and servers. SDN controller/
management platform obtains data from routers/switches, and routers/
switches obtain data from hosts. Therefore, in the overall
hierarchical structure, the SDN controller/management platform
directly obtains energy consumption data of all routers/switches, and
indirectly obtains the specific energy consumption data of all hosts
through routers/switches.
[RFC8348] provides a model for server hardware management, and
[I-D.y3bp-ivy-network-inventory-yang] is trying to extend the work to
routers and other network elements. [RFC6022] already provides a
model for NETCONF Monitoring, but nothing about power consumption.
That gap is currently being addressed by [I-D.li-ivy-power]. At
present, the YANG model for energy consumption management remains at
the concept of using SDN controller/management platform as NETCONF
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client and router/switch as NETCONF server. Standard between router/
switch and host is still a gap. This document focuses on power
consumption monitoring and extends the work further to hosts.
1.1. Requirement Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in
BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here. These words may also appear in this
document in lower case as plain English words, absent their normative
meanings.
2. Model Structure
2.1. Basic Elements and Layers
Layer 1: SDN controller/management platform
SDN controller/management platform send requests to routers/switches
to obtain configuration and status data, including power information
of routers/switches themselves and what they have obtained from
hosts.
Layer 2: Routers/switches
Routers/switches provide configuration and status data, including
power information of routers/switches themselves and what they have
obtained from hosts, and respond to requests from the SDN controller/
management platform. In addition, routers/switches send requests to
hosts to obtain configuration and status data, including power
information.
Layer 3: Hosts
Agent needs to be installed to interact with routers/switches for
NETCONF information. Hosts collect their energy consumption, and
provide configuration and status data to routers/switches.
2.2. Relationship Between Layers
Relationship 1: Between router/switch and host
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Router/switch acts as a NETCONF client and host acts as a NETCONF
server. Host collects its energy consumption, and responds to the
request of the upper-layer router/switch through the NETCONF agent to
provide configuration and status data. Router/switch obtains energy
consumption data of its lower-layer hosts.
Relationship 2: Between SDN controller/management platform and
router/switch
SDN controller/management platform acts as a NETCONF client, and
router/switch acts as a NETCONF server. The SDN controller/
management platform obtains energy consumption data of routers/
switches, and energy consumption data of hosts which has been already
obtained.
2.3. Hierarchy Representation
+--------------------------------------------------+
| |
| SDN controller/management platform |
| |
+----------+----------------------------+----------+
| |
+----------+-----------+ +-----------+----------+
| router/switch | | router/switch |
| 1 | | 2 |
+----+------------+----+ +----+------------+----+
| | | |
+----+----+ +----+----+ +----+----+ +----+----+
| host | | host | | host | | host |
| 1.1 | | 1.2 | | 2.1 | | 2.2 |
+---------+ +---------+ +---------+ +---------+
Figure 1: Hierarchy representation
3. YANG Data Model
3.1. Tree Diagram
module: power-statistics
+--ro power-statistics
+--ro network-device-statistics* [network-device-name]
+--ro network-device-name string
+--ro network-device-power uint32
+--ro host-statistics* [host-name]
+--ro host-name string
+--ro host-power uint32
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3.2. YANG Model
This model contains references to [RFC6991].
module power-statistics {
description
"Module of power statistics.";
list network-device-statistics {
description
"List of network devices statistics, i.e. routers/switches.";
key "network-device-name";
leaf network-device-name {
type string;
description
"Names of network devices.";
}
leaf network-device-power {
type uint32;
units "watts";
description
"The power consumption of each network devices.";
}
list host-statistics {
description
"List of hosts.";
key "host-name";
leaf host-name {
type string;
description
"Names of hosts.";
}
leaf host-power {
type uint32;
units "watts";
description
"Power consumption of each host.";
}
}
}
}
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4. Security Considerations
YANG and other mechanisms already exist that help secure these
interactions. This document extends the scope of what can be
controlled by the management plane, but creates no new access paths.
Besides, all nodes in this document are "config false". Once
information leakage occures, the exposure of the topology of the
entire network would be the worst situation.
5. IANA Considerations
This document makes no requests for IANA.
6. Normative References
[RFC8348] Bierman, A., Bjorklund, M., Dong, J., and D. Romascanu, "A
YANG Data Model for Hardware Management", RFC 8348,
DOI 10.17487/RFC8348, March 2018,
<https://www.rfc-editor.org/info/rfc8348>.
[I-D.y3bp-ivy-network-inventory-yang]
Yu, C., Belotti, S., Bouquier, J., Peruzzini, F., and P.
Bedard, "A YANG Data Model for Network Inventory", Work in
Progress, Internet-Draft, draft-y3bp-ivy-network-
inventory-yang-00, 23 October 2023,
<https://datatracker.ietf.org/doc/html/draft-y3bp-ivy-
network-inventory-yang-00>.
[RFC6022] Scott, M. and M. Bjorklund, "YANG Module for NETCONF
Monitoring", RFC 6022, DOI 10.17487/RFC6022, October 2010,
<https://www.rfc-editor.org/info/rfc6022>.
[I-D.li-ivy-power]
Li, T. and R. Bonica, "A YANG model for Power Management",
Work in Progress, Internet-Draft, draft-li-ivy-power-02, 7
June 2024, <https://datatracker.ietf.org/doc/html/draft-
li-ivy-power-02>.
[RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types",
RFC 6991, DOI 10.17487/RFC6991, July 2013,
<https://www.rfc-editor.org/info/rfc6991>.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
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[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>.
Authors' Addresses
Ruizhe Xiong
China Unicom
Email: xiongrz@chinaunicom.cn
Chang Liu
China Unicom
Email: liuchang77@chinaunicom.cn
Yue Guo
China Unicom
Email: guoy23@chinaunicom.cn
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