CN105450446A - Duplicated hot-redundancy system and arbitration switching method - Google Patents
Duplicated hot-redundancy system and arbitration switching method Download PDFInfo
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- CN105450446A CN105450446A CN201510788740.0A CN201510788740A CN105450446A CN 105450446 A CN105450446 A CN 105450446A CN 201510788740 A CN201510788740 A CN 201510788740A CN 105450446 A CN105450446 A CN 105450446A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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Abstract
The invention provides a duplicated hot-redundancy system. The system comprises a host, a backup machine and an arbitration switching circuit. The host and the backup machine carry out information interaction with the arbitration switching circuit. The arbitration switching circuit adopts a CPLD control unit to monitor heartbeat signals of the host and the backup machine and a fault alarm signal, determine working states of the host and the backup machine and control switching of the host and the backup machine. The duplicated hot-redundancy system takes a CPLD as a core. Through a watchdog, working states of two mainboards in the dual system are monitored in real time. Through determining the working states of double machines, reliable and automatic switching between the double machines is realized.
Description
Technical field
The application relates to two-node cluster hot backup field, particularly a kind of dual-machine hot backup system and arbitrary switch-over method.
Background technology
Along with the development of technology, people more and more pay close attention to dual-machine hot backup system.
Current highly-reliable system all adopts two-node cluster hot backup to design mostly, and namely the identical cpu motherboard of two covers runs simultaneously, and control peripheral hardware by main frame and PERCOM peripheral communication, standby host synchronous operation is in data backup status.
Present applicant proposes a kind of dual-machine hot backup system and arbitrary switch-over method, effectively can carry out the fault detect of current hosts, realize reliable arbitrary switch-over function.
Summary of the invention
Technical problems to be solved in this application are to provide a kind of dual-machine hot backup system and arbitrary switch-over method, solve the problem of active and standby machine arbitrary switch-over poor reliability in prior art.
Its concrete scheme is as follows:
A kind of dual-machine hot backup system, this system comprises:
Main frame, standby host and arbitrary switch-over circuit;
Described main frame and standby host all carry out information interaction with described arbitrary switch-over circuit;
Described arbitrary switch-over circuit comprises house dog;
Described house dog adopts CPLD control unit to carry out the heartbeat signal of active and standby machine and the monitoring of failure alarm signal, judges the operating state of active and standby machine, and controls the switching of active and standby machine.
Above-mentioned system, preferably, described arbitrary switch-over circuit also comprises:
Man Machine Interface, for showing the state of active and standby machine to user.
Above-mentioned system, preferably, described arbitrary switch-over circuit also comprises:
Signal switch unit, for when active and standby machine switches, by described Man Machine Interface and communication interface access current hosts.
Above-mentioned system, preferably, described signal switch unit adopts analog switch chip to carry out handover operation.
Above-mentioned system, preferably, described CPLD control unit, comprising:
Detecting unit, for detecting heartbeat signal and the failure alarm signal of active and standby machine;
Judging unit, for heartbeat signal and the failure alarm signal of the active and standby machine according to detection, judges the operating state of active and standby machine;
Output unit, for being in malfunction when main frame, when standby host is in Normal Backups state, exports control signal;
Control unit, carries out handover operation for controlling active and standby machine according to described control signal.
Above-mentioned system, preferably, described main frame and standby host include:
Normal bright time represent that main frame or standby host are in normal operating conditions, represent during flicker that main frame or standby host are in the indicator light of malfunction.
An arbitrary switch-over method for dual-machine hot backup system, be applied to described dual-machine hot backup system, the method comprises:
Detect heartbeat signal and the failure alarm signal of current hosts and current standby host;
According to heartbeat signal and the failure alarm signal of the current active and standby machine detected, judge the operating state of current active and standby machine;
When current hosts is in malfunction, when current standby host is in Normal Backups state, export control signal;
Control current active and standby machine according to described control signal and carry out handover operation.
In a kind of dual-machine hot backup system that the application provides, comprising: main frame, standby host and arbitrary switch-over circuit; Described main frame and standby host all carry out information interaction with described arbitrary switch-over circuit; Described arbitrary switch-over circuit adopts CPLD control unit to carry out the heartbeat signal of active and standby machine and the monitoring of failure alarm signal, judges the operating state of active and standby machine, and controls the switching of active and standby machine.Dual-machine hot backup system in the application take CPLD as core, by the operating state of two pieces of mainboards in house dog Real-Time Monitoring dual systems, by judging that the operating state of two-shipper realizes the reliable automatic switchover between two-shipper.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present application, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of dual-machine hot backup system embodiment of the application;
Fig. 2 is the structural representation of a kind of arbitrary switch-over circuit of the application;
Fig. 3 is the application VGA switch unit structural representation;
Fig. 4 is the application LVDS switch unit structural representation;
Fig. 5 is the application USB switch unit structural representation;
Fig. 6 is the arbitrary switch-over method specific implementation flow chart of a kind of dual-machine hot backup system of the application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
With reference to figure 1, show the schematic diagram of a kind of dual-machine hot backup system embodiment of the application, this system can comprise:
Main frame, standby host and arbitrary switch-over circuit.
Described main frame and standby host all carry out information interaction with described arbitrary switch-over circuit.
Described arbitrary switch-over circuit adopts CPLD control unit to carry out the heartbeat signal of active and standby machine and the monitoring of failure alarm signal, judges the operating state of active and standby machine, and controls the switching of active and standby machine.
Described CPLD control unit, comprising:
Detecting unit, for detecting heartbeat signal and the failure alarm signal of active and standby machine.
Judging unit, for heartbeat signal and the failure alarm signal of the active and standby machine according to detection, judges the operating state of active and standby machine.
Output unit, for being in malfunction when main frame, when standby host is in Normal Backups state, exports control signal.
Control unit, carries out handover operation for controlling active and standby machine according to described control signal.
Fig. 2 shows the schematic diagram of arbitrary switch-over circuit, and described arbitrary switch-over circuit also comprises:
Man Machine Interface, for showing the state of active and standby machine, manual switchover, manually the function such as restarting to user.
Signal switch unit, for when active and standby machine switches, by described Man Machine Interface and communication interface access current hosts, realize the VGA signal of two-shipper, LVDS signal, usb signal, ethernet signal alternative gating export.
In the application, two pieces of cpu motherboards of simultaneously going are had in dual-machine hot backup system, and carry out communicating with remote monitoring center and Man Machine Interface only has a set of, so modelled signal commutation circuit, coordinate arbitrated logic to realize signal of communication and interactive interface signal switching to corresponding working host.Network communication signal, be high-speed differential signal for the usb signal of Man Machine Interface, VGA/LVDS display, be the quality ensureing high speed signaling quality, special analog switch chip selected by diverter switch element.
In this application, have two kinds of vision signals and VGA signal and LVDS signal, VGA is used for external-connection displayer, the LCDs of LVDS signal on watch-dog.Adopt MAX4885AE video 2:1 multiplexer for VGA signal, its operating temperature range is-40 DEG C ~ 85 DEG C.This device can by two-way VGA signal switching to single channel connector; device switches adopts the design of no pulse disturbance switching; high-frequency circuit, low-frequency channel independence switching mode; avoid signal cross-talk; extremely low 5.5pF conducting electric capacity can be kept, in addition this device also integrated ± 15KV and ± esd protection of 8KV in the application of bandwidth up to 900MHz.Its circuit structure as shown in Figure 3.
For LVDS signal, adopt TS3DV621, its operating temperature range is-40 DEG C ~ 85 DEG C.This device has 4 integrated sideband control channel (DDC, AUX, CEC, or the HPD) bidirectional multiplexer of signal switch, it can provide very low connection resistance and low I/O electric capacity, 40ps transmission delay, position puts in place distortion 6ps, and typical bandwidth reaches 2.2GHz.This device adopts single supply 3.3V to power, and the esd protection of this device also integrated 2KV (HBM) and 1KV (charging device model), can reduce the design of protective circuit in addition.Its circuit structure as shown in Figure 4.
Each mainboard externally provides 4 tunnel USB interface, for USB mouse, keyboard and other USB device.Realize 4 tunnel USB interface by arbitrary switch-over control logic control commutation circuit to be connected with main frame all the time.Select 4 TS3USB30E specialized high-speed USB2.0 multiplexers in the design, its operating temperature range is-40 DEG C ~ 85 DEG C, has EDS defencive function.This device provides low and flat on-state resistance and low I/O electric capacity, has the 900MHz bandwidth of minimum edge edge and phase distortion, meets the requirement that adjustment USB transmission rate reaches 480Mbps.Its circuit structure as shown in Figure 5.
Ethernet interface is as the unique passage communicated with Surveillance center, and its stability, reliability design is most important.In the design, adopt differential 8 to the 4 multiplexer TS3L110 of four SPDT broadband, road 10/100Base-T local area network switch, this bandwidth of a device is up to 500MHz, and bidirectional traffic, its transmission delay is close to 0.Device provides low and flat on-state resistance to be applicable to the Ethernet application of 10/100Base-T.
Although the esd protection of the integrated 2KV of this chip (HBM) and 1KV (charging device model), can directly be connected with RJ45 interface, but this antijamming capability connecing mode is not strong, interference as the continuous impulse of electromagnetic compatibility test CS115 item (bunch of cables injected pulse excitation conducted susceptibility) may make this chip failure, be connected so the input of this chip is outputed signal with the PHY chip of mainboard during design, its output signal is by being connected with RJ45 interface after network transformer again, such meeting significantly strengthens the antijamming capability of LAN mouth, pass through electromagnetic compatibility test smoothly.
In Fig. 1, produce heartbeat signal and failure alarm signal by the mainboard of main frame and standby host, arbitrary switch-over circuit is welded on arbitrary switch-over plate, and the hardware watchdog realized by the CPLD on arbitrary switch-over plate is monitored heartbeat signal and fault-signal.
If house dog does not receive heartbeat signal or fault-signal is effective on time, arbitrary switch-over plate is then restarted mainboard by Reset, carry out Two-channel switching by SW and INT signal notice mainboard; Also need during Two-channel switching by signal switching circuit Man Machine Interface and communication interface access current hosts; By SMBus, SPI, I2C, RS232 Interface realization communication that interface chip or CPU carry between two pieces of mainboards, carry out data backup.
The functions such as CPLD control unit mainly realizes mainboard heartbeat signal, fault-signal detects, arbitration judgement, signal switching, state display.
CPLD control unit judges the state of standby machine by detection " heartbeat " signal and " Trouble Report " signal." heartbeat " signal is periodic signal, that arbitrated logic differentiates whether standby machine is in the Main Basis of normal work, but occur to arbitrated logic from fault and detect that " heartbeat " time-out waits 1 to I haven't seen you for ages and feeds the dog cycle, therefore on system, " fault alarm " signal is designed, this signal can send fault alarm to arbitrary switch-over plate immediately after mainboard detects fault, shortening the time switched from breaking down to, improving arbitrary switch-over efficiency.
After CPLD detects hostdown, corresponding control signal notice standby host switches, and controls the switching signal that high speed signal switches chip, and what make interface signal is connected to work at present main frame.According to circumstances to it, reboot operation is carried out for fault machine CPLD, to make fault machine recover normal work, if still normal work can not be recovered, then control mainboard LED status and realize condition prompting, the normal bright expression of warning light is working properly, and flicker represents that mainboard breaks down.
CPLD also provides and manually restarts and switching signal in addition, so that user carries out the operation of pressure hand merit.
In a kind of dual-machine hot backup system that the application provides, take CPLD as core, by the operating state of two pieces of mainboards in house dog Real-Time Monitoring dual systems, by judging that the operating state of two-shipper realizes the reliable automatic switchover between two-shipper.
Corresponding with the system that a kind of dual-machine hot backup system of above-mentioned the application embodiment provides, present invention also provides a kind of arbitrary switch-over embodiment of the method for dual-machine hot backup system, in the present embodiment, the method comprises:
Detect heartbeat signal and the failure alarm signal of current hosts and current standby host.
According to heartbeat signal and the failure alarm signal of the current active and standby machine detected, judge the operating state of current active and standby machine.
When current hosts is in malfunction, when current standby host is in Normal Backups state, export control signal.
Control current active and standby machine according to described control signal and carry out handover operation.
In specific implementation process, present motherboards running status is mainly divided into 5 states, be power on open state, normal operating condition, primary fault state, fault recovery state, malfunction respectively, its state relation as shown in Figure 6.Time delay when starting shooting that powers on did not carry out breakdown judge in 40 seconds, and during this period of time for the startup of mainboard, now giving tacit consent to mainboard 1 is main frame, and total interface signal is all accessed mainboard 1, now the status indicator lamp Chang Liang of mainboard 1, the status indicator lamp of mainboard 2 does not work; After 40 seconds, CPLD starts to detect, and first there being the mainboard of heartbeat signal fault invalidating signal to be set to current hosts, main frame enters normal operating conditions.Now trouble-free standby host is in Normal Backups state.If the main frame being in normal operating conditions occur heart exception or fault-signal effective, if now standby host is working properly, then there is switch between master and slave machines, fault machine enters primary fault state, the pending fault machine self-recoveries such as arbitrated logic time delay certain hour, if fault still exists, then restart fault machine, fault machine enters fault recovery state; If fault still exists after restarting, then enter malfunction, now status indicator lamp glimmers always, carries out troubleshooting with alert, or manually restarts this fault machine.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
A kind of dual-machine hot backup system provided the application above and arbitrary switch-over method are described in detail, apply specific case herein to set forth the principle of the application and execution mode, the explanation of above embodiment is just for helping method and the core concept thereof of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (7)
1. a dual-machine hot backup system, is characterized in that, this system comprises:
Main frame, standby host and arbitrary switch-over circuit;
Described main frame and standby host all carry out information interaction with described arbitrary switch-over circuit;
Described arbitrary switch-over circuit comprises house dog;
Described house dog adopts CPLD control unit to carry out the heartbeat signal of active and standby machine and the monitoring of failure alarm signal, judges the operating state of active and standby machine, and controls the switching of active and standby machine.
2. system according to claim 1, is characterized in that, described arbitrary switch-over circuit also comprises:
Man Machine Interface, for showing the state of active and standby machine to user.
3. system according to claim 2, is characterized in that, described arbitrary switch-over circuit also comprises:
Signal switch unit, for when active and standby machine switches, by described Man Machine Interface and communication interface access current hosts.
4. system according to claim 3, is characterized in that, described signal switch unit adopts analog switch chip to carry out handover operation.
5. system according to claim 1, is characterized in that, described CPLD control unit, comprising:
Detecting unit, for detecting heartbeat signal and the failure alarm signal of active and standby machine;
Judging unit, for heartbeat signal and the failure alarm signal of the active and standby machine according to detection, judges the operating state of active and standby machine;
Output unit, for being in malfunction when main frame, when standby host is in Normal Backups state, exports control signal;
Control unit, carries out handover operation for controlling active and standby machine according to described control signal.
6. the system according to any one of claim 1 to 5, is characterized in that, described main frame and standby host include:
Normal bright time represent that main frame or standby host are in normal operating conditions, represent during flicker that main frame or standby host are in the indicator light of malfunction.
7. an arbitrary switch-over method for dual-machine hot backup system, be applied to the dual-machine hot backup system described in any one of claim 1 to 6, it is characterized in that, the method comprises:
Detect heartbeat signal and the failure alarm signal of current hosts and current standby host;
According to heartbeat signal and the failure alarm signal of the current active and standby machine detected, judge the operating state of current active and standby machine;
When current hosts is in malfunction, when current standby host is in Normal Backups state, export control signal;
Control current active and standby machine according to described control signal and carry out handover operation.
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| CN106254097A (en) * | 2016-07-20 | 2016-12-21 | 浙江众合科技股份有限公司 | A kind of ATS system two-shipper arbitration system judged based on third party and method |
| CN107426756A (en) * | 2017-08-23 | 2017-12-01 | 京信通信系统（中国）有限公司 | Hot Spare communication system and its communications interface control module |
| CN107465560A (en) * | 2017-09-20 | 2017-12-12 | 郑州云海信息技术有限公司 | A kind of distributed meta data collection group alerting system and method |
| CN108988902A (en) * | 2018-05-30 | 2018-12-11 | 成都理工大学 | A kind of multi link communications managing device |
| CN109639512A (en) * | 2019-01-28 | 2019-04-16 | 中船重工鹏力（南京）大气海洋信息系统有限公司 | A kind of heat backup method of VTS multi-sensor information total system |
| CN109739694A (en) * | 2019-01-03 | 2019-05-10 | 中国兵器装备集团自动化研究所 | A kind of two-shipper arbitrary switch-over system and method |
| CN110661599A (en) * | 2018-06-28 | 2020-01-07 | 中兴通讯股份有限公司 | HA implementation method, device and storage medium between main node and standby node |
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| CN111835908A (en) * | 2019-04-23 | 2020-10-27 | 深圳市伟和胜业科技有限公司 | Eight-core new-mode self-rescue mobile phone cold backup system |
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| CN106254097A (en) * | 2016-07-20 | 2016-12-21 | 浙江众合科技股份有限公司 | A kind of ATS system two-shipper arbitration system judged based on third party and method |
| CN107426756A (en) * | 2017-08-23 | 2017-12-01 | 京信通信系统（中国）有限公司 | Hot Spare communication system and its communications interface control module |
| CN107465560A (en) * | 2017-09-20 | 2017-12-12 | 郑州云海信息技术有限公司 | A kind of distributed meta data collection group alerting system and method |
| CN108988902A (en) * | 2018-05-30 | 2018-12-11 | 成都理工大学 | A kind of multi link communications managing device |
| CN108988902B (en) * | 2018-05-30 | 2020-12-04 | 成都理工大学 | Multilink communication management device |
| CN110661599A (en) * | 2018-06-28 | 2020-01-07 | 中兴通讯股份有限公司 | HA implementation method, device and storage medium between main node and standby node |
| CN109739694A (en) * | 2019-01-03 | 2019-05-10 | 中国兵器装备集团自动化研究所 | A kind of two-shipper arbitrary switch-over system and method |
| CN109639512B (en) * | 2019-01-28 | 2021-06-15 | 中船重工鹏力（南京）大气海洋信息系统有限公司 | Hot backup method of VTS multi-sensor information comprehensive processing system |
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| CN112346925A (en) * | 2020-09-25 | 2021-02-09 | 南京恩瑞特实业有限公司 | Process-level dual-computer hot standby redundancy system and method |
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