CN104408071A - Distributive database high-availability method and system based on cluster manager - Google Patents
Distributive database high-availability method and system based on cluster manager Download PDFInfo
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- CN104408071A CN104408071A CN201410601699.7A CN201410601699A CN104408071A CN 104408071 A CN104408071 A CN 104408071A CN 201410601699 A CN201410601699 A CN 201410601699A CN 104408071 A CN104408071 A CN 104408071A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/25—Integrating or interfacing systems involving database management systems
Abstract
The invention relates to a distributive database high-availability method and system based on a cluster manager. Each database is assembled with a main node and a sub node; distributive data agency middleware is deployed onto a main agency main server and a sub agency sub server; the main agency server is connected with the main node of each database group through a main connector and is connected with the sub node of each database group through a sub connector, the sub agency server is connected with the sub node of each database group through a main connector and is connected with the main node of each database group through a sub connector, a main cluster manager is arranged in the main agency server, a sub cluster manager is arranged in the sub agency server, the main cluster manger supervises the agency process of the main agency server, the sub cluster manager supervises the agency process of the sub agency server, and the mutual monitoring is realized between the main cluster manager and the sub cluster manager. The method and the system provided by the invention have the advantages that the safety of the distributive database system is improved, the single-point fault problem is avoided, and the easy-to-use performance of the system is improved.
Description
Technical field
The present invention relates to distributed data base and field of cloud calculation, particularly relate to a kind of distributed data base high availability method based on cluster manager dual system and system.
Background technology
In many key areas such as internet, telecommunications, along with the development of business event, the I/T environment of enterprise is also constantly developing, individual data storehouse has been difficult to satisfying magnanimity database purchase and the access of high concurrent data, the appearance of distributed data base becomes inevitable, distributed data base effectively can solve mass data storage and concurrent problem, the vertical cutting with tables of data is suited by the level of data, effectively alleviate mass data storage, alleviate high concurrent problem by load balancing, High Availabitity, poll etc.But because distributed data base is that multinode is disposed, when an one malfunctions whole system there will be the risk of paralysis.The mysql database that distributed data base bottom connects can successfully be solved by the two main standby mutually of mysql.But it is that one process single node is disposed that existing distributed data base acts on behalf of middle layer, and this mode that distributed data base acts on behalf of middle layer has the following disadvantages:
1. database broker middleware is one process, and when process stopping or exception time, distributed data base can not use;
2. database broker middleware is that single host is disposed, and when this main frame delays machine or exception time, distributed data base can not use.
Summary of the invention
Technical matters to be solved by this invention is for the deficiencies in the prior art, provides a kind of distributed data base high availability method based on cluster manager dual system and system.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of distributed data base high availability method based on cluster manager dual system, comprises the steps:
Step 1, builds several database groups, and each database group is provided with database host node and database from node;
Step 2, distributed data Proxy middleware is deployed in master agent master server and from agency from server;
Step 3, described master proxy server is connected by the host node of main connection with each database group, by from connecting and being connected from node of each database group, described from proxy server being connected from node, by being connected from connecting with the host node of each database group by main connection and each database group;
Step 4, arranges main cluster manager dual system in described master proxy server, arranges from cluster manager dual system in proxy server;
Step 5, the agent process of described main cluster manager dual system supervision master proxy server, from cluster manager dual system supervision from the agent process of proxy server, main cluster manager dual system and mutually monitoring between cluster manager dual system.
The invention has the beneficial effects as follows: restarting after the present invention ensures the stopping of distributed data base agent process, after distributed data base deployment proxy delays machine, agency can automatically switch to and ensure that distributed data base normally uses from machine, improve the security of distributed data base whole system, avoid Single Point of Faliure problem, improve the ease for use of system.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the agent process of main cluster manager dual system supervision master proxy server in step 5, and being implemented as follows from cluster manager dual system supervision from the agent process of proxy server:
Step 51A, main cluster manager dual system sends message every a time cycle to the agent process of master proxy server, obtains the agent process state of master proxy server;
Step 52A, judges that whether the agent process state of master proxy server is abnormal, performs step 53A, otherwise return step 51A if abnormal;
Step 53A, main cluster manager dual system starts agent process by booting script and startup command;
Described identical with aforesaid operations mode from the mode of operation of the agent process of proxy server from cluster manager dual system supervision.
Further, main cluster manager dual system and from being implemented as follows of monitoring mutually between cluster manager dual system in step 5:
Step 51B, main cluster manager dual system and mutually send message to the other side every a time cycle from cluster manager dual system, obtains the running status of the other side;
Step 52B, when finding abnormal from cluster manager dual system, performs step 53B; When finding that main cluster manager dual system is abnormal, perform step step 54B;
Step 53B, main cluster manager dual system is started from cluster manager dual system, until normal from cluster manager dual system with appointment startup command by the script of specifying;
Step 54B, takes over master proxy server from proxy server, by the script of specifying and the main cluster manager dual system of specifying startup command to start former master proxy server, until main cluster manager dual system is normal.
Further, described main cluster manager dual system and all adopt pacemaker cluster manager dual system from cluster manager dual system.
Adopt the beneficial effect of above-mentioned further scheme: adopt pacemaker cluster manager dual system effectively can ensure that distributed data base acts on behalf of the High Availabitity in middle layer, and then ensure the High Availabitity of whole distributed data base.
Further, described master proxy server and externally provide a unified floating IP address from proxy server.
Adopt the beneficial effect of above-mentioned further scheme: no matter master proxy server provides service or provides service from proxy server, the normal use of distributed data base can be ensured.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of distributed data base high-availability system based on cluster manager dual system, comprises several database groups, distributed data base Proxy middleware and application system;
Be provided with database host node and database in described each database group from node, distributed data base Proxy middleware comprises master proxy server and from proxy server; Described master proxy server is connected by the host node of main connection with each database group, by from connecting and being connected from node of each database group; Described from proxy server being connected from node by main connection and each database group, by being connected from connection with the host node of each database group; Described master proxy server is all connected with application system with from proxy server; Main cluster manager dual system is provided with in described master proxy server, be provided with in proxy server from cluster manager dual system, the agent process of described main cluster manager dual system supervision master proxy server, from cluster manager dual system supervision from the agent process of proxy server, main cluster manager dual system and mutually monitoring between cluster manager dual system.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described main cluster manager dual system comprises the first emergency processing module, comprises the second emergency processing module from cluster manager dual system;
Described first emergency processing module, it, for sending message every a time cycle to the agent process of master proxy server, obtains the agent process state of master proxy server; Judge that whether the agent process state of master proxy server is abnormal according to the status information returned, specify if abnormal booting script and startup command to start agent process, otherwise continue to monitor;
Described second emergency processing module, it, for sending message every a time cycle to the agent process from proxy server, obtains the agent process state from proxy server; Whether extremely, judge from the agent process state of proxy server according to the status information returned, specify if abnormal booting script and startup command to start agent process, otherwise continue to monitor.
Further, described main cluster manager dual system also comprises the 3rd emergency processing module, also comprises the 4th emergency processing module from cluster manager dual system;
Described 3rd emergency processing module, it, for sending message every a time cycle to from cluster manager dual system, obtains the running status from cluster manager dual system; Whether judge from cluster manager dual system abnormal according to the status information returned, if the script of specifying abnormal and appointment startup command, until normal from cluster manager dual system, continue to monitor if starting from cluster manager dual system;
Described 4th emergency processing module, it, for sending message every a time cycle to main cluster manager dual system, obtains the running status of main cluster manager dual system; Judge that whether main cluster manager dual system is abnormal according to the status information returned, if abnormal, take over master proxy server from proxy server, by the script of specifying and the main cluster manager dual system of specifying startup command to start former master proxy server, until main cluster manager dual system is normal, otherwise continue to monitor.
Further, described main cluster manager dual system and all adopt pacemaker cluster manager dual system from cluster manager dual system.
Further, described master proxy server and externally provide a unified floating IP address from proxy server.
Accompanying drawing explanation
Fig. 1 is a kind of distributed data base high-availability system block diagram based on cluster manager dual system of the present invention;
Fig. 2 is master proxy server of the present invention and the structured flowchart from proxy server;
Fig. 3 is a kind of distributed data base high availability method process flow diagram based on cluster manager dual system of the present invention;
Fig. 4 is the agent process of the present invention's main cluster manager dual system supervision master proxy server and supervises the agent process process flow diagram from proxy server from cluster manager dual system;
Fig. 5 is the agent process of the present invention's main cluster manager dual system supervision master proxy server or supervises the specific implementation process flow diagram from the agent process of proxy server from cluster manager dual system;
Fig. 6 is the main cluster manager dual system of the present invention and mutually monitors process flow diagram from cluster manager dual system.
In accompanying drawing, the list of parts representated by each label is as follows:
100, database group, 200, distributed data base Proxy middleware, 300, application system, 201, master proxy server, 202, from proxy server, 201-1, main cluster manager dual system, 202-1 is from cluster manager dual system.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of distributed data base high-availability system based on cluster manager dual system, comprises several database groups 100, distributed data base Proxy middleware 200 and application system 300; Be provided with database host node 101 and database in described each database group 100 from node 102, distributed data base Proxy middleware 200 comprises master proxy server 201 and from proxy server 202; Described master proxy server 201 is connected 101 by main connection with the host node of each database group, by from connecting and being connected from node 102 of each database group; Described from proxy server 202 being connected from node 102 by main connection and each database group, by being connected from connection with the host node 101 of each database group; Described master proxy server 201 is all connected with application system 300 with from proxy server 202; Main cluster manager dual system is provided with in described master proxy server 201, be provided with from cluster manager dual system in proxy server 202, the agent process of described main cluster manager dual system supervision master proxy server 201, from cluster manager dual system supervision from the agent process of proxy server 202, main cluster manager dual system and mutually monitoring between cluster manager dual system.
As shown in Figure 2, described main cluster manager dual system 201-1 comprises the first emergency processing module, comprises the second emergency processing module from cluster manager dual system 201-2; Described first emergency processing module, it, for sending message every a time cycle to the agent process of master proxy server, obtains the agent process state of master proxy server; Judge that whether the agent process state of master proxy server is abnormal according to the status information returned, specify if abnormal booting script and startup command to start agent process, otherwise continue to monitor; Described second emergency processing module, it, for sending message every a time cycle to the agent process from proxy server, obtains the agent process state from proxy server; Whether extremely, judge from the agent process state of proxy server according to the status information returned, specify if abnormal booting script and startup command to start agent process, otherwise continue to monitor.
Described main cluster manager dual system 201-1 also comprises the 3rd emergency processing module, also comprises the 4th emergency processing module from cluster manager dual system 202-1; Described 3rd emergency processing module, it, for sending message every a time cycle to from cluster manager dual system, obtains the running status from cluster manager dual system; Whether judge from cluster manager dual system abnormal according to the status information returned, if the script of specifying abnormal and appointment startup command, until normal from cluster manager dual system, continue to monitor if starting from cluster manager dual system; Described 4th emergency processing module, it, for sending message every a time cycle to main cluster manager dual system, obtains the running status of main cluster manager dual system; Judge that whether main cluster manager dual system is abnormal according to the status information returned, if abnormal, take over master proxy server from proxy server, by the script of specifying and the main cluster manager dual system of specifying startup command to start former master proxy server, until main cluster manager dual system is normal, otherwise continue to monitor.
As shown in Figure 3, a kind of distributed data base high availability method based on cluster manager dual system, comprises the steps:
Step 1, builds several database groups, and each database group is provided with database host node and database from node;
Step 2, distributed data Proxy middleware is deployed in master agent master server and from agency from server;
Step 3, described master proxy server is connected by the host node of main connection with each database group, by from connecting and being connected from node of each database group, described from proxy server being connected from node, by being connected from connecting with the host node of each database group by main connection and each database group;
Step 4, arranges main cluster manager dual system in described master proxy server, arranges from cluster manager dual system in proxy server;
Step 5, the agent process of described main cluster manager dual system supervision master proxy server, from cluster manager dual system supervision from the agent process of proxy server, main cluster manager dual system and mutually monitoring between cluster manager dual system.
As shown in Figure 4, main cluster manager dual system (on host node pacemaker) on the master proxy server of distributed data base Proxy middleware is supervised Dbproxy, every a time cycle message sent to agent process and return process status information, to supervise from the Dbproxy on node from pacemaker node equally, a message is sent to agent process every a time cycle and returns process status.Simultaneously host node pacemaker and mutually send message from node pacemaker and mutually supervise the other side.
As shown in Figure 5, the agent process of main cluster manager dual system supervision master proxy server in step 5, and being implemented as follows from cluster manager dual system supervision from the agent process of proxy server:
Step 51A, main cluster manager dual system pacemaker send message every a time cycle to the agent process Dbproxy of master proxy server, obtain the agent process Dbproxy state of master proxy server;
Step 52A, judges that whether the agent process Dbproxy state of master proxy server is abnormal, performs step 53A, otherwise return step 51A if abnormal;
Step 53A, main cluster manager dual system starts agent process by booting script and startup command;
Described identical with aforesaid operations mode from the mode of operation of the agent process of proxy server from cluster manager dual system supervision.
As shown in Figure 6, main cluster manager dual system and from being implemented as follows of monitoring mutually between cluster manager dual system in step 5:
Step 51B, main cluster manager dual system and mutually send message to the other side every a time cycle from cluster manager dual system, obtains the running status of the other side;
Step 52B, when finding abnormal from cluster manager dual system, performs step 53B; When finding that main cluster manager dual system is abnormal, perform step step 54B;
Step 53B, main cluster manager dual system is started from cluster manager dual system, until normal from cluster manager dual system with appointment startup command by the script of specifying;
Step 54B, takes over master proxy server from proxy server, by the script of specifying and the main cluster manager dual system of specifying startup command to start former master proxy server, until main cluster manager dual system is normal.
Wherein, described main cluster manager dual system and all adopt pacemaker cluster manager dual system from cluster manager dual system.
Wherein, described master proxy server and externally provide a unified floating IP address from proxy server.
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 done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1., based on a distributed data base high availability method for cluster manager dual system, it is characterized in that, comprise the steps:
Step 1, builds several database groups, and each database group is provided with database host node and database from node;
Step 2, distributed data Proxy middleware is deployed in master agent master server and from agency from server;
Step 3, described master proxy server is connected by the host node of main connection with each database group, by from connecting and being connected from node of each database group, described from proxy server being connected from node, by being connected from connecting with the host node of each database group by main connection and each database group;
Step 4, arranges main cluster manager dual system in described master proxy server, arranges from cluster manager dual system in proxy server;
Step 5, the agent process of described main cluster manager dual system supervision master proxy server, from cluster manager dual system supervision from the agent process of proxy server, main cluster manager dual system and mutually monitoring between cluster manager dual system.
2. a kind of distributed data base high availability method based on cluster manager dual system according to claim 1, it is characterized in that, the agent process of main cluster manager dual system supervision master proxy server in step 5, and being implemented as follows from cluster manager dual system supervision from the agent process of proxy server:
Step 51A, main cluster manager dual system sends message every a time cycle to the agent process of master proxy server, obtains the agent process state of master proxy server;
Step 52A, judges that whether the agent process state of master proxy server is abnormal, performs step 53A, otherwise return step 51A if abnormal;
Step 53A, main cluster manager dual system starts agent process by booting script and startup command;
Described identical with aforesaid operations mode from the mode of operation of the agent process of proxy server from cluster manager dual system supervision.
3. a kind of distributed data base high availability method based on cluster manager dual system according to claim 1, is characterized in that, main cluster manager dual system and from being implemented as follows of monitoring mutually between cluster manager dual system in step 5:
Step 51B, main cluster manager dual system and mutually send message to the other side every a time cycle from cluster manager dual system, obtains the running status of the other side;
Step 52B, when finding abnormal from cluster manager dual system, performs step 53B; When finding that main cluster manager dual system is abnormal, perform step step 54B;
Step 53B, main cluster manager dual system is started from cluster manager dual system, until normal from cluster manager dual system with appointment startup command by the script of specifying;
Step 54B, takes over master proxy server from proxy server, by the script of specifying and the main cluster manager dual system of specifying startup command to start former master proxy server, until main cluster manager dual system is normal.
4. a kind of distributed data base high availability method based on cluster manager dual system according to claim 1, is characterized in that, described main cluster manager dual system and all adopt pacemaker cluster manager dual system from cluster manager dual system.
5. a kind of distributed data base high availability method based on cluster manager dual system according to claim 1, is characterized in that, described master proxy server and externally provide a unified floating IP address from proxy server.
6. based on a distributed data base high-availability system for cluster manager dual system, it is characterized in that, comprise several database groups, distributed data base Proxy middleware and application system;
Be provided with database host node and database in described each database group from node, distributed data base Proxy middleware comprises master proxy server and from proxy server; Described master proxy server is connected by the host node of main connection with each database group, by from connecting and being connected from node of each database group; Described from proxy server being connected from node by main connection and each database group, by being connected from connection with the host node of each database group; Described master proxy server is all connected with application system with from proxy server; Main cluster manager dual system is provided with in described master proxy server, be provided with in proxy server from cluster manager dual system, the agent process of described main cluster manager dual system supervision master proxy server, from cluster manager dual system supervision from the agent process of proxy server, main cluster manager dual system and mutually monitoring between cluster manager dual system.
7. a kind of distributed data base high-availability system based on cluster manager dual system according to claim 6, it is characterized in that, described main cluster manager dual system comprises the first emergency processing module, comprises the second emergency processing module from cluster manager dual system;
Described first emergency processing module, it, for sending message every a time cycle to the agent process of master proxy server, obtains the agent process state of master proxy server; Judge that whether the agent process state of master proxy server is abnormal according to the status information returned, specify if abnormal booting script and startup command to start agent process, otherwise continue to monitor;
Described second emergency processing module, it, for sending message every a time cycle to the agent process from proxy server, obtains the agent process state from proxy server; Whether extremely, judge from the agent process state of proxy server according to the status information returned, specify if abnormal booting script and startup command to start agent process, otherwise continue to monitor.
8. a kind of distributed data base high-availability system based on cluster manager dual system according to claim 6, it is characterized in that, described main cluster manager dual system also comprises the 3rd emergency processing module, also comprises the 4th emergency processing module from cluster manager dual system;
Described 3rd emergency processing module, it, for sending message every a time cycle to from cluster manager dual system, obtains the running status from cluster manager dual system; Whether judge from cluster manager dual system abnormal according to the status information returned, if the script of specifying abnormal and appointment startup command, until normal from cluster manager dual system, continue to monitor if starting from cluster manager dual system;
Described 4th emergency processing module, it, for sending message every a time cycle to main cluster manager dual system, obtains the running status of main cluster manager dual system; Judge that whether main cluster manager dual system is abnormal according to the status information returned, if abnormal, take over master proxy server from proxy server, by the script of specifying and the main cluster manager dual system of specifying startup command to start former master proxy server, until main cluster manager dual system is normal, otherwise continue to monitor.
9. a kind of distributed data base high-availability system based on cluster manager dual system according to claim 6, is characterized in that, described main cluster manager dual system and all adopt pacemaker cluster manager dual system from cluster manager dual system.
10. a kind of distributed data base high-availability system based on cluster manager dual system according to claim 6, is characterized in that, described master proxy server and externally provide a unified floating IP address from proxy server.
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