CN105471765B - Virtual machine external mesh bandwidth limiting method for cloud platform - Google Patents
Virtual machine external mesh bandwidth limiting method for cloud platform Download PDFInfo
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- CN105471765B CN105471765B CN201510982130.4A CN201510982130A CN105471765B CN 105471765 B CN105471765 B CN 105471765B CN 201510982130 A CN201510982130 A CN 201510982130A CN 105471765 B CN105471765 B CN 105471765B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/52—Queue scheduling by attributing bandwidth to queues
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
the invention relates to the technical field of cloud computing, in particular to a virtual machine extranet bandwidth limiting method of a cloud platform. The invention firstly stores the limited parameter information such as IP, bandwidth and the like into a database through a Reset interface; then, notifying a bandwidth limiting Agent to obtain the latest bandwidth information, and obtaining the latest bandwidth information in a database by the bandwidth limiting Agent; then, the bandwidth limiting Agent establishes a bandwidth queue in an interface where an external network IP is positioned on the virtual router, and adds an external network IP address filtering rule to the queue; eventually, the bandwidth limitations of the virtual machine will work when it accesses the extranet. The method can solve the problem that the virtual machine in the cloud platform accesses the bandwidth limitation of the external network through NAT mapping on the virtual route, can support that one external network interface has a plurality of external network IPs and has bandwidth limitation on the plurality of external network IPs, and has more accurate and reliable bandwidth limitation; can be used for limiting the bandwidth of the virtual machine extranet.
Description
Technical Field
The invention relates to the technical field of cloud computing, in particular to a virtual machine extranet bandwidth limiting method of a cloud platform.
Background
many bandwidth limiting functions are realized for large network hardware, but the bandwidth is limited from a software level on a cloud platform environment, and the virtual machine extranet access and extranet access virtual machine access are limited. Some existing schemes for analyzing the cloud platform to realize the bandwidth limitation of the external network are to mount an external network card on a virtual machine, then limit the bandwidth of the external network card, few bandwidth limitation schemes for mapping an internal network to an external network IP through NAT on a virtual router are mentioned, and meanwhile, the bandwidth limitation of a plurality of external network IPs is realized on one virtual router, so that a convenient bandwidth limitation interface is provided.
disclosure of Invention
The invention provides a virtual machine extranet bandwidth limiting method for a cloud platform.
The technical scheme for solving the technical problems is as follows:
the method comprises the following steps:
(1) Saving the limited IP, bandwidth and other parameter information into a database by providing a Reset interface;
(2) Informing a bandwidth limiting Agent to acquire the latest bandwidth information, and acquiring the latest bandwidth information in a database by the bandwidth limiting Agent;
(3) The bandwidth limiting Agent establishes a bandwidth queue on an interface where an external network IP is positioned in the virtual router, and adds an external network IP address filtering rule to the queue;
(4) When the virtual machine accesses the external network, the matching rule plays a role in limiting the bandwidth of the external network.
The Reset interface provides an interface by a network service and supports the input of a parameter JSON format;
The network service also provides database access and persists bandwidth and IP information into the database;
And after the database is updated, the network server side sends a message to the bandwidth limiting Agent, and the message is sent through a message route.
After receiving a bandwidth limiting message routing message, the bandwidth limiting Agent acquires the latest bandwidth information from a network server in a message routing form, wherein the bandwidth limiting information comprises a virtual route id, an external network IP and bandwidth information;
The bandwidth limiting Agent acquires an external network interface on a network name space where the virtual machine route is located according to the virtual route id, and updates the bandwidth on the interface;
the bandwidth updating comprises the steps of firstly checking whether the external network IP bandwidth rule exists, and if so, updating a bandwidth queue matched in the rule; otherwise, a new bandwidth queue is established on the external network interface according to the bandwidth size, then a matching rule is added according to the external network IP information, the matched IP data packet is placed in the newly added queue, and the queue adjusts the speed of the sent data packet according to the bandwidth information, so that the function of limiting the external network bandwidth of the virtual machine is finally achieved.
The bandwidth rules support priority, wherein one rule can only match one queue;
the external network interface comprises a plurality of external network IPs and supports the establishment of a bandwidth queue for each external network IP.
The method and the device can solve the problem of bandwidth limitation of accessing the external network by the virtual machine in the cloud platform through NAT mapping on the virtual route, can support one external network interface to have a plurality of external network IPs and limit the bandwidth of the plurality of external network IPs, and have accurate and reliable bandwidth limitation.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a flow chart of the present invention.
Detailed Description
the flow chart is shown in fig. 1, and the specific implementation process is as follows:
1. providing Reset interface to set bandwidth and storing in database
curl -i -X PUT http：//20.251.36.21：9696/v2.0/floatingip_qoss/{e2978449-635f-4f64-b240-79dd61fb0153} -H″Content-Type：application/json″-H″X-Auth-Token：$TOKEN ID″-d′{″floatingip_qos″：{″max_rate″：2000}}′
Wherein e2978449-635f-4f64-b240-79dd61fb0153 is Id information represented by the floating IP, and max _ rate is 2000 kbits ps
The information stored in the database is:
src _ ip: 20.251.36.104 outer network IP address, max _ rate maximum bandwidth rate of 2000 kbits ps, router _ id of b90a765b-d4ee-4ca9-aee8-79387537a3a7, and floating IP port information of e2978449-635f-4f64-b240-79dd61fb0153.
the specific Server service is provided by the WSGI program of python, the connected database is Mysql, and Sqlalchemy is used for driving connection
2. sending a message to a bandwidth limiting Agent, the bandwidth limiting Agent obtaining bandwidth information
The main content of the bandwidth information is as follows:
Specifically, communication is realized through a rabbitm-mq message middleware
3. Establishing bandwidth queues and matching rules on virtual routes according to bandwidth information
(1) obtaining a network namespace for use by the route:
qrouter-388d58c3-dcd7-467c-a887-7531f9b35d7d
network interface on the network namespace used by floating IP: qg-1444681f-45
ip netns exec qrouter-388d58c3-dcd7-467c-a887-7531f9b35d7d ip addr show
29:qg-1444681f-45:<BROADCAST，MULTICAST，UP，LOWER_UP>
mtu 1500 qdisc htb state UNKNOWN
………………………………………………………………………….
inet 20.251.36.104/32 brd 20.251.36.104 scope global qg-1444681f-45
valid_lft forever preferred_lft forever
……………………………
If the bandwidth setting is performed for the first time, it is performed as follows.
(2) clearing unclassifiable qdisc information on interface
ip netns exec qrouter-388d58c3-dcd7-467c-a887-7531f9b35d7d tc qdisc del dev qg-1444681f-45 root
(3) establishing non-classifiable qdisc information on an interface, wherein the sub-class can borrow bandwidth based on an htb algorithm (hierarchical token bucket algorithm)
ip netns exec qrouter-388d58c3-dcd7-467c-a887-7531f9b35d7d tc qdisc add dev qg-1444681f-45 root handle 1:htb
(4) Build the first root class under the root
ip netns exec qrouter-388d58c3-dcd7-467c-a887-7531f9b35d7d tc class add dev qg-1444681f-45 parent 1:classid 1:1 htb rate 100mbit ceil 100mbit
(5) Establishing subclasses and leaf nodes of the subclasses, and setting bandwidth limitation
ip netns exec qrouter-388d58c3-dcd7-467c-a887-7531f9b35d7d tc class add dev parent 1:1 classid 1:10 htb rate 2000kbit ceil 2000kbit
ip netns exec qrouter-388d58c3-dcd7-467c-a887-7531f9b35d7d tc qdisc add dev qg-1444681f-45 parent 1:10 sfq perturb 10
(6) Add flow rules
ip netns exec qrouter-388d58c3-dcd7-467c-a887-7531f9b35d7d tc filter add dev qg-1444681f-45 protocol ip parent 1:u32 match ip src 20.251.36.104flowid 1:10
4. The virtual machine accesses the external network to complete the bandwidth limitation
the virtual machine accesses the external network by using NAT mapping on the route, the IP of the virtual machine is 12.12.12.14, and the IP of the external network after mapping is 20.251.36.104, as shown in the following (1):
(1) virtual machine IP
root@host-12-12-12-14～]#ip addr show
……………………………..
2:eth0:<BROADCAST，MULTICAST，UP，LOWER_UP>mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether fa:16:3e:3c:02:c4 brd ff:ff:ff:ff:ff:ff
inet 12.12.12.14/24 brd 12.12.12.255 scope global dynamic eth0
………………..
(2) testing the bandwidth of the external network by iperf
The external network bandwidth (downlink bandwidth) is tested by an iperf tool, wherein 20.251.36.13 is a Server end of the iperf, a virtual machine is a client of the iperf, the iperf client commands iperf3-c 20.251.36.13, and the downlink bandwidth after the test is 1.91Mbits/sec (1910 kbits/sec).
Claims (2)
1. A virtual machine extranet bandwidth limiting method of a cloud platform is characterized by comprising the following steps:
(1) Saving the limited IP and bandwidth parameter information into a database by providing a Reset interface;
(2) Informing a bandwidth limiting Agent to acquire the latest bandwidth information, and acquiring the latest bandwidth information in a database by the bandwidth limiting Agent;
(3) The bandwidth limiting Agent establishes a bandwidth queue on an interface where an external network IP is positioned in the virtual router, and adds an external network IP address filtering rule to the queue;
(4) when the virtual machine accesses the external network, the matching rule plays a role in limiting the bandwidth of the external network;
The Reset interface provides an interface by a network service and supports the input of a parameter JSON format;
the network service also provides database access and persists bandwidth and IP information into the database;
After the database is updated, the network service sends a message to a bandwidth limiting Agent, and the message is sent through a message route;
After receiving a bandwidth limiting message routing message, the bandwidth limiting Agent acquires the latest bandwidth information from a network server in a message routing form, wherein the bandwidth limiting information comprises a virtual route id, an external network IP and bandwidth information;
the bandwidth limiting Agent acquires an external network interface on a network name space where the virtual machine route is located according to the virtual route id, and updates the bandwidth on the interface;
the bandwidth updating comprises the steps of firstly checking whether the external network IP bandwidth rule exists, and if so, updating a bandwidth queue matched in the rule; otherwise, a new bandwidth queue is established on the external network interface according to the bandwidth size, then a matching rule is added according to the external network IP information, the matched IP data packet is placed in the newly added queue, and the queue adjusts the speed of the sent data packet according to the bandwidth information, so that the function of limiting the external network bandwidth of the virtual machine is finally achieved.
2. The virtual machine extranet bandwidth limiting method of claim 1, characterized by: the bandwidth rules support priority, wherein one rule can only match one queue;
the external network interface comprises a plurality of external network IPs and supports the establishment of a bandwidth queue for each external network IP.
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| CN105915387B (en) * | 2016-05-31 | 2019-04-30 | 新浪网技术(中国)有限公司 | The outer net bandwidth speed limiting method, apparatus and system of cloud host under a kind of IaaS cloud platform |
| CN105978825A (en) * | 2016-07-15 | 2016-09-28 | 国云科技股份有限公司 | Cloud platform access entrance bandwidth sharing method |
| CN106487590B (en) * | 2016-10-20 | 2019-05-21 | 国云科技股份有限公司 | A method of batch virtual machine port speed constraint is realized based on virtual network |
| CN111010347A (en) * | 2019-11-30 | 2020-04-14 | 北京浪潮数据技术有限公司 | Network flow control method and related device of cloud platform |
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| CN103634235A (en) * | 2013-11-01 | 2014-03-12 | 国云科技股份有限公司 | Method for limiting speed of network interface of virtual machine |
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| US8804523B2 (en) * | 2012-06-21 | 2014-08-12 | Microsoft Corporation | Ensuring predictable and quantifiable networking performance |
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