CN102710457B - A kind of N+1 backup method of cross-network segment and device - Google Patents
A kind of N+1 backup method of cross-network segment and device Download PDFInfo
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Abstract
The invention provides a kind of cross-network segment N+1 backup method and device, be applied on server, wherein this server is configured with floating IP address, the present invention includes: use heart hop IP address to set up heartbeat with opposite end server and be connected, and the gateway interface IP address of mutual both sides of standby server by heartbeat connection and opposite end; Whether the business service detecting self is normal, and stops business service when detecting that own service service is abnormal; When self is abnormal, notice standby server enables described floating IP address, notify that static routing corresponding for described floating IP address is set to disarmed state by the gateway device of self, static routing corresponding for described floating IP address releases by the gateway device of notice backup server.The present invention can realize cross-network segment N+1 and back up, and the speed of active-standby switch is very fast.
Description
Technical field
The present invention relates to server backup technology, particularly relate to backup method and the device of a kind of N+1 of cross-network segment.
Background technology
Along with the development supervisory control system scale of monitoring trade is increasing, the reliability requirement of user to monitoring server is more and more higher, at present to back mechanism mainly dual-host backup or the N+1 backup of server (as VM server).
A dual-host backup i.e. main frame (i.e. primary server) and a standby host (i.e. standby server) is all placed in same machine room, shares a floating IP address and externally provides service server.It should be noted that floating IP address and dynamic IP addressing are two different concepts.Floating IP address both can be fixed configurations also can be dynamic assignment.When main frame is normal, floating IP address is on main frame, and main frame externally provides monitoring business service.After hostdown or network interruption, it is abnormal that standby host is checked through main frame, and standby host switches to operating state, and floating IP address is switched on standby host, and standby host externally provides monitoring business service (this is also the origin of floating IP address definition).But the defect of this method to be cost compare high, because each server needs a standby server.
Another backup method is N+1 backup, i.e. the combination of N number of main frame and a standby host, and N number of main frame uses N number of floating IP address externally to provide service respectively, and after wherein main frame is abnormal, standby host uses the floating IP address of this main frame externally to provide service.But, please refer to the subway networking diagram along the line shown in Fig. 1, because use same floating IP address, so primary VM must with VM for subsequent use at same double layer network, existing server N+1 backup scenario limits all servers all at a double layer network.If server is in strange land, intermediate demand is across three-layer network, and existing N+1 scheme cannot use.
Summary of the invention
In view of this, the invention provides a kind of cross-network segment N+1 back-up device, be applied on the server in monitor network, when wherein this server is as primary server, floating IP address is used externally to provide business service, and the gateway device of this server being configured with the static routing corresponding with this floating IP address and the gateway sub-interface IP address corresponding with this floating IP address, wherein said monitor network comprises standby server and the individual primary server of N (being not less than 2); This device comprises:
Heartbeat unit, sets up heartbeat for using heart hop IP address with opposite end server and is connected, and by with the heart hop IP address corresponding gateway interface IP address of heartbeat connection with the mutual both sides of the standby server of opposite end;
Detecting unit, whether normal for the business service detecting self, and detecting that own service service notifies active and standby administrative unit time abnormal and by the service stopping of business service unit;
Business service unit, for externally providing business service at self as using described floating IP address during primary server;
Active and standby administrative unit, enable described floating IP address for the standby server of notice opposite end when own service service is abnormal and externally provide business service, notify that static routing corresponding for described floating IP address is set to disarmed state by the gateway device of self, static routing corresponding for described floating IP address releases by the gateway device according to the gateway interface IP address notice backup server of standby server.
The present invention also provides a kind of cross-network segment N+1 backup method, be applied on the server in monitor network, when wherein this server is as primary server, floating IP address is used externally to provide business service, and the gateway device of this server being configured with the static routing corresponding with this floating IP address and the gateway sub-interface IP address corresponding with this floating IP address, wherein said server comprises standby server and the individual primary server of N (being not less than 2); Wherein this server externally provides business service at self as using described floating IP address during primary server, and the method comprises:
A, use heart hop IP address are set up heartbeat with opposite end server and are connected, and by with the heart hop IP address corresponding gateway interface IP address of heartbeat connection with the mutual both sides of the standby server of opposite end;
Whether B, the business service detecting self be normal, and detecting that the business service of self stops time abnormal by own service service;
C, when own service service is abnormal, the standby server of notice opposite end enables described floating IP address externally provides business service, notify that static routing corresponding for described floating IP address is set to disarmed state by the gateway device of self, static routing corresponding for described floating IP address releases by the gateway device according to the gateway interface IP address notice backup server of standby server.
The present invention is coordinated by server and gateway device, N+1 backup can be realized when cross-network segment, and it is more more timely than traditional mechanisms such as gateway device active probe that server and the configuration mechanism of gateway on route is issued make route issue, and active-standby switch can be greatly reduced the impact of business.
Accompanying drawing explanation
Fig. 1 is that one typically needs cross-network segment to carry out server N+1 backup network environment.
Fig. 2 is the logic networking diagram that server N+1 of the present invention backs up.
Fig. 3 is gateway device hardware structure diagram of the present invention.
Fig. 4 is the building-block of logic of gateway side N+1 back-up device of the present invention.
Fig. 5 is the building-block of logic of server side N+1 back-up device of the present invention
Embodiment
Describe the present invention below in conjunction with accompanying drawing.Please refer to Fig. 1 and Fig. 2, the networking structure illustrating a kind of subway monitor network shown in Fig. 1, if need to implement N+1 back mechanism under so easy-to-use scene, be then difficult to the problem avoiding needing to overcome cross-network segment.The present invention is that primary server introduces two IP addresses, solves the problems referred to above by server with coordinating of gateway device.Please refer to the networking logic diagram that the present invention shown in Fig. 2 solves the problem.Primary server (VM_MAIN1 and VM_MAIN2) is provided with an own IP address (IP1_1 and IP2_1), this own IP address is used for setting up heartbeat with other servers, and the gateway interface IP address that these two heart hop IP address are corresponding is then respectively IP1_0 and IP2_0.Heartbeat mentioned here is a logical concept, not refers in particular to line physically, and refers to connection in logic, can be understood as the connection of carrying heartbeat message.Primary server (VM_MAIN1 and VM_MAIN2) comprises a floating IP address (IP11_1 and IP22_1) all further, and the floating IP address of VM is mainly used in externally providing business service, such as monitoring business service.VM is the core node in monitor network, and itself and other node mainly carries out Signalling exchange, guides the transmission in a network of whole monitor data business and storage.
In Fig. 2, each server (comprising standby server) utilizes gateway device access network, and in preferably execution mode, this gateway device is router or three-tier switch.Due to the introducing of floating IP address, the gateway device that each primary server is corresponding also needs configure respectively with floating IP address one to one gateway sub-interface IP address (IP11_0 and IP22-0).
Please refer to Fig. 3 and Fig. 4, Figure 3 shows that a kind of general hardware structure figure of gateway device of the present invention, wherein CPU is responsible for the affairs of the control planes such as process procotol usually, such as route learning, route issue and router-level topology etc.; And the forwarding of forwarding chip (as asic chip) primary responsibility deal with data message (also referred to as service message).If gateway device is a traditional router, it may not need forwarding chip, and the forwarding of service message can perform computer program to realize by CPU.And correspondingly the hardware structure of server of the present invention can adopt general server hardware framework.
Fig. 4 be the present invention adopt computer program to realize execution mode under the building-block of logic of gateway side N+1 back-up device, it comprises routing processing unit, configuration management element and gateway side detecting unit.Fig. 5 is the logical construction of server side N+1 back-up device of the present invention, and it comprises: heartbeat unit, detecting unit, business service unit, active and standby administrative unit and Alarm Unit (not shown).Below describe between server with gateway device by coordinating the handling process realizing quick cross-network segment N+1 and back up.It should be noted that, the present invention is not limited to computer program and realizes, but no matter which kind of implementation, and the logical construction of gateway device and server can abstractly be all the structure shown in Fig. 4 and Fig. 5.Describe handling process of the present invention from the angle of primary server below, correspondingly the handling process of standby server will be interspersed in and wherein be described.
Step 101, on gateway device, received the IP address of N number of gateway sub-interface at the same network segment corresponding to N number of floating IP address respectively by configuration interface, wherein each floating IP address belongs to the different network segments.
Step 102, receives N number of static routing corresponding respectively with floating IP address by configuration interface.Step 101 and step 102 are performed by the configuration management element of gateway device.
When initial, each server all can obtain heart hop IP address by the mode such as manual configuration or DHCP usually.Furthermore, for primary server and its gateway device, each primary server configuration floating IP address (each floating IP address can belong to the different network segments), each gateway device can also configure the gateway sub-interface IP address corresponding with floating IP address and the static routing corresponding with floating IP address by the mode of manual configuration (can certainly be the configuration mode based on some privately owned/total agreements).Time initial, the static routing on the gateway device of primary server is in effective status, and the static routing on the gateway device of standby server is in disarmed state, because standby server does not also need externally to provide service.
The gateway of standby server needs configure the gateway sub-interface IP address identical with the gateway device of primary server.When standby server enables the floating IP address of primary server, this floating IP address has corresponding gateway sub-interface can provide gateway service for it.The same static routing needing configuration corresponding with each floating IP address on the gateway device of standby server.The gateway sub-interface IP address corresponding with floating IP address that the gateway device of that is each primary server configures and the static routing corresponding with floating IP address all need there is identical configuration on the gateway of standby server, so that after standby server uses the floating IP address of any one primary server, the gateway configuration of standby server can meet the requirement of its access network.In specific implementation, the gateway device of each server can be consistent in the configuration of gateway sub-interface IP address configuration and static routing, because the concept of primary server and a standby server role, may change mutually at any time, so it is a kind of common execution mode that gateway device configures identical.Same reason, standby server can configure N number of floating IP address (but can not being used time initial) in initial, even if certainly initially do not carry out such configuration, standby server also can be connected by heartbeat knows described N number of floating IP address with each primary server interaction, standby server mainly will be allowed can to know the floating IP address of each primary server to take over the service of primary server at any time, and specific design details can with reference to prior art.
Step 104, primary server use heart hop IP address is set up heartbeat with opposite end standby server and is connected, and by with the heart hop IP address corresponding gateway interface IP address of heartbeat connection with opposite end server interaction both sides; This step is by heartbeat cell processing.
Step 105, whether primary server detects own service service normal, detects that own services notifies active and standby administrative unit and stops business service time abnormal; This step is by detecting unit process.
Step 106, when own service service is abnormal, the standby server of notice opposite end enables described floating IP address externally provides business service, notify that static routing corresponding for described floating IP address is set to disarmed state by the gateway device of self, static routing corresponding for described floating IP address releases by the gateway device according to the gateway interface IP address notice backup server of standby server.This step is by active and standby administrative unit process.
After startup of server, if this server is configured to primary server, the mode as by election or manual configuration becomes primary server.The business service unit of primary server brings into use floating IP address externally to provide business service, and now primary server also needs diligently hop IP address to start to set up heartbeat with opposite end standby server to be connected.After heartbeat connection establishment, between active/standby server, regularly can send heartbeat message.Heartbeat message will carry gateway interface IP address corresponding to new information-heart hop IP address in the present invention.Carry out fully mutual after, standby server will know the gateway interface IP address of the primary server in all opposite ends, and primary server will know the gateway interface IP address of opposite end backup server.
When server just starts, active and standby administrative unit can know it self is primary server, such as read manual configuration, or read election results, or detecting unit initial examination and measurement result etc., for gateway device, also can be understood as server identity herein changes into primary from for subsequent use, and now active and standby administrative unit just can notify when starting that the gateway device of self issues the static routing corresponding with self floating IP address.
May exception be there is in primary server in the process run, mainly comprise two kinds of situations: the first is business service itself the appearance exception on primary server, such as the excessive exception etc. caused of visit capacity, detecting unit on server can the business service of periodic detection business service unit whether normal, the detection that a special script realizes business service can be comprised in detecting unit.If detect that business service is abnormal, notify active and standby administrative unit.Correspondingly, the floating IP address that active and standby administrative unit notice standby server enables primary server self externally provides business service to take over self, notify the gateway side detecting unit of the gateway device of self simultaneously, after gateway side detecting unit is notified can instruction routing processing unit static routing corresponding for floating IP address is set to invalid.Active and standby administrative unit can also notify the gateway side detecting unit of the gateway device of standby server further according to the gateway interface IP address of the opposite end server obtained in heartbeat message, static routing corresponding for described floating IP address can be set to effectively and be released by dynamic routing protocol by instruction routing processing unit after this gateway side detecting unit is notified.Due to the timely notice of the active and standby administrative unit of primary server, static routing that the gateway device of active and standby both sides can be corresponding to floating IP address is rapidly made process the most timely, want fast a lot of compared to gateway device by means such as message detections, can drop to minimum to service impact, and gateway device often send to server the performance that probe messages also can affect server undoubtedly.
The second is that primary server occurs abnormal with outside communication, now detecting unit can be learnt according to the report of heartbeat unit, if heartbeat unit can not receive the heartbeat message of opposite end for a long time, illustrate and cannot to communicate normally with opposite end, being likely now that the network of self side goes wrong, is also likely that the network of side, opposite end goes wrong.The detecting unit of active/standby server all can receive the notice of heartbeat unit, the detecting unit of both sides all can detect the connectedness between the third party address that default, if be communicated with, then determine that self-role now should become primary server, if can not be communicated with, determine certainly as standby server.If current primary server can be communicated with, then primary server side can be considered as problem and goes out in the network of standby server side, and primary server does not need to adjust business.If standby server can be communicated with, then standby server side can think that the network of current primary server side goes wrong, and now needs the active and standby administrative unit notifying self.Correspondingly, active and standby administrative unit informing business service unit enables floating IP address externally provides business service, notify the gateway side detecting unit of the gateway device of self simultaneously, instruction routing processing unit static routing corresponding for floating IP address can be set to Efficient Concurrency cloth go out after gateway side detecting unit is notified; And notify the gateway side detecting unit of the gateway device of primary server, after gateway side detecting unit is notified can instruction routing processing unit static routing is set to invalid.As previously mentioned, equally because the proactive notification of server side accelerates the processing speed of gateway device to static routing.Some in the middle of second case, no matter is primary server or standby server, once determine that self cannot be communicated with third party address, then needs to enter rebooting status at once, because can eliminate by restarting extremely.
In addition, be no matter the first or second case, once after standby server becomes primary server, Alarm Unit all needs the alarm sending an active-standby switch to keeper, and keeper can process in time according to this alarm and occur abnormal server.
Step 107, after gateway device receives the notice of server, static routing corresponding for floating IP address be set to effectively according to notice or static routing released by dynamic routing protocol, this step is performed by routing processing unit.
When each primary server is all normal, standby server can not be taken over any floating IP address and externally provide service, and it is invalid that the static routing that each floating IP address on the gateway of therefore standby server is corresponding is set to.Once the business service on certain primary server is abnormal, standby server can take over its business service as early as possible according to the notice of primary server or self testing mechanism, but other equipment now in network also do not know how message is correctly transmitted to standby server, because other equipment in network also do not know the floating IP address of primary server " removal of home ".Standby server in the present invention is once turning is primary server, former primary server or new server can notify that the gateway device of new primary server is to issue static routing corresponding to floating IP address, and other equipment in such network can know how to find this floating IP address in IP aspect in time.Please refer to Fig. 2, when supposing that the service of VM_Main1 is abnormal, VM-BAK enables the floating IP address (IP11_1) of VM_Main1, self gateway device proactive dissemination static routing is notified by VM-BAK or VM_Main1, VM-BAK successfully externally provides business service with IP11_1 name, main frame in network can find IP11_1 very soon, and host subscriber can't experience any difference in service layer.
The present invention is coordinated by server and gateway device, N+1 backup can be realized when cross-network segment, and it is more more timely than traditional mechanisms such as gateway device active probe that server and the configuration mechanism of gateway on route is issued make route issue, and active-standby switch can be greatly reduced the impact of business.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (6)
1. a cross-network segment N+1 back-up device, be applied on the server in monitor network, when wherein this server is as primary server, floating IP address is used externally to provide business service, and the gateway device of this server is configured with the static routing corresponding with this floating IP address and the gateway sub-interface IP address corresponding with this floating IP address, wherein said monitor network comprises standby server and N number of primary server, and described N is not less than 2; It is characterized in that, this device comprises:
Heartbeat unit, sets up heartbeat for using heart hop IP address with opposite end server and is connected, and by with the heart hop IP address corresponding gateway interface IP address of heartbeat connection with the mutual both sides of the standby server of opposite end;
Detecting unit, whether normal for the business service detecting self, and detecting that own service service notifies active and standby administrative unit time abnormal and by the service stopping of business service unit;
Business service unit, for externally providing business service at self as using described floating IP address during primary server;
Active and standby administrative unit, enable described floating IP address for the standby server of notice opposite end when own service service is abnormal and externally provide business service, notify that static routing corresponding for described floating IP address is set to disarmed state by the gateway device of self, static routing corresponding for described floating IP address releases by the gateway device according to the gateway interface IP address notice backup server of standby server;
When described server is standby server, described detecting unit is further used for notifying active and standby administrative unit when the primary server exception in opposite end being detected, and informing business service unit enables the floating IP address of the primary server in opposite end,
Described active and standby administrative unit, be further used for when standby server enables floating IP address, static routing corresponding for described floating IP address is set to disarmed state by the gateway device according to the notice opposite end, gateway interface IP address of the primary server in opposite end, notifies that static routing corresponding for described floating IP address releases by the gateway device of self.
2. device as claimed in claim 1, it is characterized in that, described detecting unit, for detecting the connectedness between self and third party address when heartbeat connection exception being detected, if can not be communicated with this third party address, will determine that self is abnormal, and if can be communicated with this third party address, determine opposite end server exception.
3. device as claimed in claim 1, is characterized in that, also comprise Alarm Unit, for when self becomes primary server from standby server, send a warning message to notify the former primary server exception of keeper to network management device.
4. a cross-network segment N+1 backup method, be applied on the server in monitor network, when wherein this server is as primary server, floating IP address is used externally to provide business service, and the gateway device of this server is configured with the static routing corresponding with this floating IP address and the gateway sub-interface IP address corresponding with this floating IP address, wherein said server comprises standby server and N number of primary server, and described N is not less than 2; Wherein this server externally provides business service at self as using described floating IP address during primary server, and it is characterized in that, the method comprises:
A, use heart hop IP address are set up heartbeat with opposite end server and are connected, and by with the heart hop IP address corresponding gateway interface IP address of heartbeat connection with the mutual both sides of the standby server of opposite end;
Whether B, the business service detecting self be normal, and detecting that the business service of self stops time abnormal by own service service;
C, when own service service is abnormal, the standby server of notice opposite end enables described floating IP address externally provides business service, notify that static routing corresponding for described floating IP address is set to disarmed state by the gateway device of self, static routing corresponding for described floating IP address releases by the gateway device according to the gateway interface IP address notice backup server of standby server;
When described server is standby server, comprise further:
D, enable the floating IP address of the primary server in opposite end when the primary server exception in opposite end being detected, and according to the gateway device of the notice opposite end, gateway interface IP address of the primary server in opposite end, static routing corresponding for described floating IP address is set to disarmed state, notify that static routing corresponding for described floating IP address releases by the gateway device of self.
5. method as claimed in claim 4, is characterized in that, comprise further:
E, detecting that heartbeat detects the connectedness between self and third party address when connecting abnormal, if can not be communicated with this third party address, self exception will be determined, if can be communicated with this third party address, determine opposite end server exception.
6. method as claimed in claim 4, is characterized in that, also comprise:
F, when self becomes primary server from standby server, send a warning message to notify the former primary server exception of keeper to network management device.
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| CN201210138440.4A CN102710457B (en) | 2012-05-07 | 2012-05-07 | A kind of N+1 backup method of cross-network segment and device |
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| CN102970160B (en) * | 2012-11-08 | 2015-09-09 | 浙江宇视科技有限公司 | The method and apparatus of a kind of auxiliary monitor terminal and standby server high-speed traffic |
| CN104660441A (en) * | 2013-11-25 | 2015-05-27 | 北京信威通信技术股份有限公司 | Method, device and system for achieving high reliability of server |
| CN106656532A (en) * | 2015-10-28 | 2017-05-10 | 华为软件技术有限公司 | Network element switching method and device |
| CN105933196A (en) * | 2016-03-30 | 2016-09-07 | 南京大全自动化科技有限公司 | Layered and distributed data acquisition and monitoring control system and control method thereof |
| CN108259629B (en) * | 2016-12-28 | 2021-07-23 | 阿里巴巴集团控股有限公司 | Virtual internet protocol address switching method and device |
| CN106953760A (en) * | 2017-03-24 | 2017-07-14 | 新华三技术有限公司 | A kind of backup method and device |
| CN107145408A (en) * | 2017-05-17 | 2017-09-08 | 郑州云海信息技术有限公司 | A kind of method and system for realizing active and standby clustered deploy(ment) |
| CN111130896A (en) * | 2019-12-29 | 2020-05-08 | 北京浪潮数据技术有限公司 | NFS fault switching method and system and dual-control storage system |
| CN111628915B (en) * | 2020-07-16 | 2022-03-25 | 安徽华速达电子科技有限公司 | Network connection state real-time monitoring and management method and system of gateway equipment |
| CN114513402B (en) * | 2020-10-23 | 2023-11-10 | 大唐移动通信设备有限公司 | High availability implementation method, device and storage medium of network equipment |
| CN115277864B (en) * | 2022-07-27 | 2024-01-26 | 海通证券股份有限公司 | Route determining method and device, computer readable storage medium and terminal |
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