CN105306545A - Failover method and system for external service node of cluster - Google Patents
Failover method and system for external service node of cluster Download PDFInfo
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- CN105306545A CN105306545A CN201510627329.5A CN201510627329A CN105306545A CN 105306545 A CN105306545 A CN 105306545A CN 201510627329 A CN201510627329 A CN 201510627329A CN 105306545 A CN105306545 A CN 105306545A
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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
- H04L67/104—Peer-to-peer [P2P] networks
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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
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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Abstract
The invention discloses a failover method and system for an external service node of a cluster. The method comprises the following steps: allocating an intranet address, a node serial number and a priority level for each node in the cluster; sending broadcast to the intranet addresses of other nodes excluding the current node through an intranet by each node; wherein, the broadcast by each non-external service node comprises a node serial number per se, the broadcast by the external service node comprises the node serial number per se and external service identification information; determining node serial number information not receiving the broadcast by each node according to the received node serial number information; selecting nodes corresponding to the same node serial number information not receiving the broadcast in all nodes as failure nodes; and if the external service node is present in the failure nodes, selecting a node having the highest priority level in effective nodes to serve as the external service node. The method and the system can be used for achieving reasonable and effective failover in the case of failure of the external service node.
Description
Technical field
The present invention relates to computer realm, particularly the method and system of the external service node Takeover of a kind of cluster.
Background technology
General cluster can only carry out the switching of externally service usually between a few node, and configuration is carried out bothering very much when changing, when cluster lost efficacy in the face of the host node of outer service time, of can only enable in the several secondary nodes set took over external service.And need to configure respectively in advance host node and several secondary node, be configured time secondary node is many and can bother very much.If wish add new secondary node or delete old secondary node, amendment configuration is very complicated, and so meeting seriously reduces the extensibility of cluster.The situation of the confusion of adapter order is easily there is time this kind of method configures many secondary nodes in addition.
Therefore, how fast, realizing the external service node Takeover of cluster compactly, is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of this invention is to provide the method and system of the external service node Takeover of a kind of cluster, the method and system can carry out rationally effective adapter when externally service node lost efficacy, very big must minimizing revises when adding or delete clustered node the time configuring and expend, and also can prevent the human error because retouching operation complexity causes.
For solving the problems of the technologies described above, the invention provides the method for the external service node Takeover of a kind of cluster, be peer distribution internal address each in cluster, node serial number and priority, also comprise:
Each node is by the internal address transmission broadcast of Intranet to other nodes except this node; Wherein, the broadcast of each non-external service node transmission comprises the node serial number of self, and the broadcast that external service node sends comprises the node serial number of self and external service identity information;
Each node, according to receiving node serial number information, determines the node serial number information not receiving broadcast;
Choose the corresponding node of the node serial number information not receiving broadcast identical in all nodes as failure node;
If when there is external service node in described failure node, from effective node, select the highest node of priority as external service node.
Wherein, also comprise:
If in the broadcast that externally service node receives, when there is the node higher than described external service node priority, choose the highest node of priority from the node higher than described external service node priority;
Described external service node sends takeover request to the node that described priority is the highest, and stops externally service;
The node that described priority is the highest receives described takeover request rear tube and externally serves.
Wherein, described each node is comprised by the internal address transmission broadcast of Intranet to other nodes except this node:
Described each node, according to internal address correspondence table, is broadcasted by the internal address transmission of Intranet to all the other each nodes.
Wherein, described each node, according to receiving node serial number information, determines that the node serial number information not receiving broadcast comprises:
Each node, according to receiving node serial number information in Preset Time, determines the node serial number information not receiving broadcast.
Wherein, also comprise:
The basic configuration information of timing to node each in cluster, described node serial number and described priority upgrade.
The system of the external service node Takeover of a kind of cluster provided by the invention, comprising:
Module is set, for being peer distribution internal address each in cluster, node serial number and priority;
Broadcast module, for each node by the internal address transmission broadcast of Intranet to other nodes except this node; Wherein, the broadcast of each non-external service node transmission comprises the node serial number of self, and the broadcast that external service node sends comprises the node serial number of self and external service identity information;
Determination module, for each node according to receiving node serial number information, determines the node serial number information not receiving broadcast;
Choose module, for choosing the corresponding node of the node serial number information not receiving broadcast identical in all nodes as failure node;
Adapter module, if for there is external service node in described failure node time, from effective node, select the highest node of priority as external service node.
Wherein, also comprise:
Comparison module, if in broadcast that externally service node receives, when there is the node higher than described external service node priority, choose the highest node of priority from the node higher than described external service node priority;
Replacement module, sends takeover request for described external service node to the node that described priority is the highest, and stops externally service; The node that described priority is the highest receives described takeover request rear tube and externally serves.
Wherein, described determination module comprises:
Described each node, according to internal address correspondence table, is broadcasted by the internal address transmission of Intranet to all the other each nodes.
Wherein, choose module described in comprise:
Each node, according to receiving node serial number information in Preset Time, determines the node serial number information not receiving broadcast.
Wherein, also comprise:
Update module, for the basic configuration information of timing to node each in cluster, described node serial number and described priority upgrade.
The method and system of the external service node Takeover of cluster provided by the present invention, for peer distribution internal address each in cluster, node serial number and priority, also comprise: each node is by the internal address transmission broadcast of Intranet to other nodes except this node; Wherein, the broadcast of each non-external service node transmission comprises the node serial number of self, and the broadcast that external service node sends comprises the node serial number of self and external service identity information; Each node, according to receiving node serial number information, determines the node serial number information not receiving broadcast; Choose the corresponding node of the node serial number information not receiving broadcast identical in all nodes as failure node; If when there is external service node in described failure node, from effective node, select the highest node of priority as external service node;
Because the method is by being configured node in advance, for each peer distribution internal address, node serial number and priority, each node has oneself numbering and priority, only need to modify to corresponding parameter when deleting and add, the operation that therefore such mode needs when interpolation or deletion of node when expanding afterwards will be very simple; And each node carries out the confirmation of identity by the form of broadcast, and whether lost efficacy and can carry out rationally effective adapter quickly and accurately when external service node lost efficacy.And do not need artificial disturbance, the generation of human error can be prevented; The method and system can carry out rationally effective adapter when externally service node lost efficacy, greatly must reduce the amendment when adding or delete clustered node and configure the time expended, and also can prevent the human error because retouching operation complexity causes.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The flow chart of the method for the external service node Takeover of cluster that Fig. 1 provides for the embodiment of the present invention;
The structured flowchart of the system of the external service node Takeover of cluster that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Core of the present invention is to provide the method and system of the external service node Takeover of a kind of cluster, the method and system can carry out rationally effective adapter when externally service node lost efficacy, very big must minimizing revises when adding or delete clustered node the time configuring and expend, and also can prevent the human error because retouching operation complexity causes.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, the flow chart of the method for the external service node Takeover of cluster that Fig. 1 provides for the embodiment of the present invention; First the method needs for peer distribution internal address each in cluster, and node serial number and priority are arranged, and wherein, the configurations of every platform node is consistent; After setting, the method can comprise:
S100, each node are by the internal address transmission broadcast of Intranet to other nodes except this node; Wherein, the broadcast of each non-external service node transmission comprises the node serial number of self, and the broadcast that external service node sends comprises the node serial number of self and external service identity information;
Wherein, node sends the situation that the object of broadcast is other nodes allowed outside the releasing of each node itself.Therefore the content that each node sends can comprise self information, such as, comprise the numbering of own node, if externally service node also needs to comprise the identification information representing oneself external node identities; The information of other nodes is not essential.Such as precedence information can pass through broadcast transmission, also can other nodes according to broadcasting the node serial number that obtains, then search the priority list preserved in each node according to node serial number.Here two kinds of modes are only enumerated.
S110, each node, according to receiving node serial number information, determine the node serial number information not receiving broadcast;
S120, choose the corresponding node of the node serial number information not receiving broadcast identical in all nodes as failure node;
Wherein, by comparing the number information of each node, namely the number information obtaining failure node determines failure node; In all normal situation of all nodes, should can receive the number information of other nodes by each node, what namely add oneself is numbered whole nodal information; When having node failure, then this node can not send broadcast, and therefore, all number information in the node serial number received and numbered list can be compared by normal node, determine the number information lacked, be namely defined as the node serial number information not receiving broadcast.The node serial number information not receiving broadcast that all normal node can be obtained gathers, and is comparing, and determines that the corresponding node of the node serial number information not receiving broadcast identical in all nodes is as failure node.
If when there is external service node in the described failure node of s130, from effective node, select the highest node of priority as external service node.
When there is external service node in failure node, then need to select the highest node of priority in all effective nodes and take over, as external service node.Wherein, the priority of each node can be undertaken setting and revising by actual conditions.External service node can be made to remain on the state of the optimum in effective node by arranging priority.
Based on technique scheme, the method of the external service node Takeover of the cluster that the embodiment of the present invention provides, the method is by being configured node in advance, for each peer distribution internal address, node serial number and priority, each node has oneself numbering and priority, only needs to modify to corresponding parameter when deleting and add, therefore such mode when expanding afterwards add or deletion of node time the operation that needs will be very simple; And each node carries out the confirmation of identity by the form of broadcast, and whether lost efficacy and can carry out rationally effective adapter quickly and accurately when external service node lost efficacy.And do not need artificial disturbance, the generation of human error can be prevented; The method and system can carry out rationally effective adapter when externally service node lost efficacy, greatly must reduce the amendment when adding or delete clustered node and configure the time expended, and also can prevent the human error because retouching operation complexity causes.
Based on technique scheme, the method can also comprise:
If in the broadcast that externally service node receives, when there is the node higher than described external service node priority, choose the highest node of priority from the node higher than described external service node priority;
Described external service node sends takeover request to the node that described priority is the highest, and stops externally service;
The node that described priority is the highest receives described takeover request rear tube and externally serves.
Wherein, the rule of node serial number can set according to service condition, such as, arranged according to priority order from high to low by all nodes.
Wherein, this system can be taken over according to the situation of effective node and the external priority of service node in real time in real time, remains at the node that all effective node medium priorities are the highest to be external service node.Enumerating a detailed process can be as follows:
By using the network segment distributing Intranet, the internal address that preparation one is fixing on all the nodes, node serial number and relative importance value correspondence table, only need, to all peer distribution node serial numbers, to allow node self automatically configure internal address according to correspondence table.And then by using Intranet broadcast, all nodes are allowed to contain the broadcast of own node numbering to all internal address timed sending in correspondence table in Intranet, additionally can add one section of special information in the broadcast that wherein node of externally service sends, show it oneself is the node that service is externally provided.
If all nodes in the process monitored, all cannot receive the broadcast of certain node, be then failure node depending on this node; Otherwise be then effective node depending on this node.If externally provide the node failure of service, then provide external service selecting the highest node of relative importance value from effective node.If provide the node of externally service to have received broadcast from the node higher than self relative importance value, then can stop external service, and send takeover request to this node, the node higher when node relative importance value receives takeover request, the adapter of externally service will be carried out, then start to provide external service.
Based on each technical scheme above-mentioned, optionally, described each node can be comprised by the internal address transmission broadcast of Intranet to other nodes except this node:
Described each node, according to internal address correspondence table, is broadcasted by the internal address transmission of Intranet to all the other each nodes.
Wherein, the Intranet network address of all nodes can be carried out list, and can be stored in each node; Each node, according to internal address correspondence table, to be sent to the internal address of all the other all the other each nodes except this node except by Intranet and broadcasts.
Here the time sent can be send at any time, also can be to send according to predetermined time interval.Or several modes is also deposited, and can be arranged by user.Namely set according to actual conditions.
Based on each technical scheme above-mentioned, optionally, described each node, according to receiving node serial number information, determines that the node serial number information not receiving broadcast can comprise:
Each node, according to receiving node serial number information in Preset Time, determines the node serial number information not receiving broadcast.
Wherein, be not all the time all in transmission because node sends broadcast, therefore, when determining invalid node, must limit if having time, otherwise can cause confusion.Therefore, each node, according to receiving node serial number information in Preset Time, determines the node serial number information not receiving broadcast.Here Preset Time can be the time interval of presetting that node sends broadcast, also can be less than this time interval.
Based on above-mentioned concrete technical scheme arbitrarily, the method can also comprise:
The basic configuration information of timing to node each in cluster, described node serial number and described priority upgrade.
Wherein, according to the improvement of technology, or the service condition of equipment, user can basic configuration information at any time or regularly to node each in cluster, and described node serial number and described priority upgrade.Make the information that this nodal information is always optimum, thus ensure that the ability of external service node.
Detailed process is:
In the unfixed situation of node total number, when building cluster and need externally to provide High Availabitity to serve, we need to be consistent to the configurations of every platform node, and then each node is numbered, distribute the priority that respective adapter is externally served, the node that priority is the highest obtains the authority of externally service.All nodes are all broadcasted to all the other nodes, if all nodes do not receive the broadcast of a certain node within a certain period of time, then look this node failure.If the node failure of externally service, just externally served by the responsible adapter that the effective node medium priority of residue is the highest; In the event of the node of higher priority, the current node of externally service that provides can stop external service, and sends takeover request to the node of higher priority, and the node of higher priority receives request and externally serves with rear tube.
Based on technique scheme, the method of the external service node Takeover of the cluster that the embodiment of the present invention provides, change the switching that cluster in prior art can only carry out externally service usually between a few node, and configuration is carried out bothering very much when changing.The method can carry out rapid configuration to node in the unfixed situation of clustered node quantity, rationally effective adapter is carried out time external service node was lost efficacy, and what need when interpolation or deletion of node is simple and quick, very big must minimizing revises when adding or delete clustered node the time configuring and expend, and also can prevent the human error because retouching operation complexity causes.And configuration node is simple, the configuration that only needs one are general adds and arranges node serial number separately, and all nodes have the ability of the external service of adapter, and all nodes have the ability of the external service of adapter.
Embodiments provide the method for the external service node Takeover of cluster, can by said method can externally service node lost efficacy time carry out rationally effective adapter.
Be introduced the system of the external service node Takeover of cluster that the embodiment of the present invention provides below, the system of cluster described below external service node Takeover can mutual corresponding reference with the method for above-described cluster external service node Takeover.
Please refer to Fig. 2, the structured flowchart of the system of the external service node Takeover of cluster that Fig. 2 provides for the embodiment of the present invention; This system can comprise:
Module 100 is set, for being peer distribution internal address each in cluster, node serial number and priority;
Broadcast module 200, for each node by the internal address transmission broadcast of Intranet to other nodes except this node; Wherein, the broadcast of each non-external service node transmission comprises the node serial number of self, and the broadcast that external service node sends comprises the node serial number of self and external service identity information;
Determination module 300, for each node according to receiving node serial number information, determines the node serial number information not receiving broadcast;
Choose module 400, for choosing the corresponding node of the node serial number information not receiving broadcast identical in all nodes as failure node;
Adapter module 500, if for there is external service node in described failure node time, from effective node, select the highest node of priority as external service node.
Optionally, this system can also comprise:
Comparison module, if in broadcast that externally service node receives, when there is the node higher than described external service node priority, choose the highest node of priority from the node higher than described external service node priority;
Replacement module, sends takeover request for described external service node to the node that described priority is the highest, and stops externally service; The node that described priority is the highest receives described takeover request rear tube and externally serves.
Optionally, described determination module 300 can comprise:
Described each node, according to internal address correspondence table, is broadcasted by the internal address transmission of Intranet to all the other each nodes.
Optionally, choose module 400 described in can comprise:
Each node, according to receiving node serial number information in Preset Time, determines the node serial number information not receiving broadcast.
Based on above-mentioned any technical scheme, this system can also comprise:
Update module, for the basic configuration information of timing to node each in cluster, described node serial number and described priority upgrade.
In specification, each embodiment 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 portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above the method and system of the external service node Takeover of cluster provided by the present invention are described in detail.Apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection range of the claims in the present invention.
Claims (10)
1. a method for the external service node Takeover of cluster, is characterized in that, be peer distribution internal address each in cluster, node serial number and priority, also comprise:
Each node is by the internal address transmission broadcast of Intranet to other nodes except this node; Wherein, the broadcast of each non-external service node transmission comprises the node serial number of self, and the broadcast that external service node sends comprises the node serial number of self and external service identity information;
Each node, according to receiving node serial number information, determines the node serial number information not receiving broadcast;
Choose the corresponding node of the node serial number information not receiving broadcast identical in all nodes as failure node;
If when there is external service node in described failure node, from effective node, select the highest node of priority as external service node.
2. the method for claim 1, is characterized in that, also comprises:
If in the broadcast that externally service node receives, when there is the node higher than described external service node priority, choose the highest node of priority from the node higher than described external service node priority;
Described external service node sends takeover request to the node that described priority is the highest, and stops externally service;
The node that described priority is the highest receives described takeover request rear tube and externally serves.
3. the method for claim 1, is characterized in that, described each node is comprised by the internal address transmission broadcast of Intranet to other nodes except this node:
Described each node, according to internal address correspondence table, is broadcasted by the internal address transmission of Intranet to all the other each nodes.
4. method as claimed in claim 3, it is characterized in that, described each node, according to receiving node serial number information, determines that the node serial number information not receiving broadcast comprises:
Each node, according to receiving node serial number information in Preset Time, determines the node serial number information not receiving broadcast.
5. the method as described in any one of Claims 1-4, is characterized in that, also comprises:
The basic configuration information of timing to node each in cluster, described node serial number and described priority upgrade.
6. a system for the external service node Takeover of cluster, is characterized in that, comprising:
Module is set, for being peer distribution internal address each in cluster, node serial number and priority;
Broadcast module, for each node by the internal address transmission broadcast of Intranet to other nodes except this node; Wherein, the broadcast of each non-external service node transmission comprises the node serial number of self, and the broadcast that external service node sends comprises the node serial number of self and external service identity information;
Determination module, for each node according to receiving node serial number information, determines the node serial number information not receiving broadcast;
Choose module, for choosing the corresponding node of the node serial number information not receiving broadcast identical in all nodes as failure node;
Adapter module, if for there is external service node in described failure node time, from effective node, select the highest node of priority as external service node.
7. system as claimed in claim 6, is characterized in that, also comprise:
Comparison module, if in broadcast that externally service node receives, when there is the node higher than described external service node priority, choose the highest node of priority from the node higher than described external service node priority;
Replacement module, sends takeover request for described external service node to the node that described priority is the highest, and stops externally service; The node that described priority is the highest receives described takeover request rear tube and externally serves.
8. system as claimed in claim 6, it is characterized in that, described determination module comprises:
Described each node, according to internal address correspondence table, is broadcasted by the internal address transmission of Intranet to all the other each nodes.
9. system as claimed in claim 8, is characterized in that, described in choose module and comprise:
Each node, according to receiving node serial number information in Preset Time, determines the node serial number information not receiving broadcast.
10. the system as described in any one of claim 6 to 9, is characterized in that, also comprises:
Update module, for the basic configuration information of timing to node each in cluster, described node serial number and described priority upgrade.
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