CN100362760C - A Backup Method for Distributed Configuration Database System - Google Patents

Abstract

The invention discloses a backup method for a distributed configuration database system, comprising steps: first, setting and starting a standby centralized unit; secondly, when the main centralized unit works normally, the standby centralized unit controls the configuration The data is backed up, and the backup is specifically: the backup centralized unit records the initialized distribution unit processed by the main centralized unit; when the main centralized unit performs data synchronization operation, the backup centralized unit records the changed configuration data; again, when the main When the centralized unit works abnormally, the standby centralized unit is upgraded to the current main centralized unit, and enters the normal operation state according to the aforementioned configuration data, specifically: the standby centralized unit provides configuration data for the distribution unit being initialized according to the records; the standby centralized unit according to The record synchronizes changed configuration data to the distribution unit.

Description

A Backup Method for Distributed Configuration Database System

technical field

The invention relates to equipment configuration data storage technology in the communication field, in particular to a backup method for a distributed configuration database system.

Background technique

Generally, a communication device is composed of various types of functional modules, and different functional modules implement different service functions. Among them, some modules in the communication equipment provide service functions, which are called service modules (such as service modules that provide TDM time slots); and some modules do not provide services, but provide functions to manage the operation of the entire device. Known as the main control module. The main control module can be used to control the startup and operation of other business modules in the device.

As the basis for communication equipment to start and run, configuration data is indispensable for communication equipment. The configuration data is used to configure the service modules contained in the system and the service types provided, such as adding a certain type of single board, configuring time slots and links, and so on.

In the prior art, a communication device saves and manages configuration data by implementing a small distributed configuration database system. The configuration database (CDB, Configuration DataBase) can save static configuration data, such as added boards, service types, etc., which are added at the initial stage of device operation; it also includes dynamic data, which is automatically changed during device operation, such as: The total number of time slots is 100, and several time slots will be occupied by making several calls now, so the number of time slots that can still be provided now changes dynamically with the number of calls made.

Referring to FIG. 1 , the distributed configuration database system includes two types of units: a configuration data centralization unit 110 and a configuration data distribution unit 120 . Among them, the configuration data concentration unit 110 is distributed (or run) on the main control module, and contains all configuration data of the entire system; while the configuration data distribution unit 120 is distributed on the business module, and only contains some configuration data related to the business module . The configuration data on the configuration data distribution unit 120 is obtained from the configuration data concentration unit 110 in the "pull" mode when the distribution unit is initially started; when the distribution unit 120 is running normally, the configuration data is obtained from the configuration data concentration unit 110 in the "push" mode. Synchronize.

Whether the configuration database system is stable is crucial to whether the communication equipment can provide stable, reliable and uninterrupted business services. And because the centralized unit of the configuration database system is distributed on the main control module, it saves all the configuration data of the system, is responsible for providing configuration data when the business module starts the distribution unit initialization, and is responsible for synchronizing the change to the distribution unit when the configuration data changes, so the main The stable operation of the control module is the basis for ensuring the normal operation of the entire configuration database system.

However, the following two situations will cause the main control module to fail to operate normally during the operation of the communication equipment: first, the main control module fails during the operation of the communication equipment; second, the main control module needs to be updated when the version of the communication equipment is upgraded.

In order to ensure the normal operation of the entire configuration database system, configuration data backup is required. A kind of prior art method that realizes main control module backup can refer to the Chinese invention patent application that disclosed on November 26, 2003, and application number is 0211 7709.0. The method includes: setting the main control board and the standby board; copying the data of the main control board to the standby board; when the main control board is switched over, the standby board is automatically promoted to the main control board, and after smoothing the data, it enters the normal operation state .

However, there are some deficiencies in this prior art: if the main control module (main control board) fails or resets when the configuration data distribution unit is being initialized, because the configuration data concentration unit cannot work normally at the same time, it cannot process other The request for obtaining configuration data sent by the configuration data distribution unit blocks the initialization of the configuration data distribution unit, causing the business module to fail to start; in addition, if data synchronization is performed between the configuration data concentration unit and the configuration data distribution unit, the master control In case of module failure or reset, there is no guarantee that the configuration data changes that have occurred have been synchronized to all configuration data distribution units, which will cause inconsistencies in the configuration data on each unit in the entire configuration database system.

Contents of the invention

The technical problem solved by the present invention is to provide a backup method for a distributed configuration database system, which can realize the stability and consistency of configuration data when the main control module fails or is reset.

For this reason, the technical scheme that the present invention solves technical problem is: provide a kind of backup method of distributed configuration database system, comprise steps:

1) Set up and start the standby centralized unit;

2) When the main centralized unit works normally, the standby centralized unit backs up the configuration data in the main centralized unit;

3) When the main centralized unit works abnormally, the standby centralized unit is upgraded to the current active centralized unit, and enters the normal operation state according to the aforementioned configuration data;

Wherein, said step 2) further includes:

21) The standby centralized unit records the initialized distribution unit processed by the main centralized unit;

22) When the main centralized unit performs data synchronization operation, the backup centralized unit records the changed configuration data;

In the step 3), the backup centralized unit provides configuration data for the distribution unit being initialized according to the record in step 21); the backup centralized unit synchronizes the changed configuration data to the distribution unit according to the record in step 22).

Preferably, the step 21) specifically includes:

The configuration data distribution unit sends a registration request message to the configuration data master centralized unit;

The configuration data primary centralized unit parses the registration request message; sends a registration notification message to the configuration data standby centralized unit;

The configuration data standby centralized unit parses the registration notification message, records the corresponding distribution unit data table attribute information and the state of the distribution unit as an initialization state, and responds to the configuration data main centralized unit with a registration notification response message;

After receiving the registration notification response message of the configuration data standby unit, the configuration data master centralized unit performs data synchronization of the configuration data distribution unit;

After the initialization of the configuration data distribution unit is completed, the master configuration data centralized unit sends the data table synchronization end notification message of the corresponding distribution unit to the configuration data backup centralized unit;

After the configuration data standby centralized unit receives the data table synchronization end notification message, it modifies the initialization state of the corresponding recorded distribution unit to the end state; and sends a data table end notification response message to the configuration data master centralized unit.

Preferably, the record in said step 22) specifically includes:

The master uses the centralized unit to perform data operations;

The active centralized unit sends a data synchronization operation message to the standby centralized unit;

The standby centralized unit parses the data synchronization operation message, validates the aforementioned data operation on itself and records the data operation; sends a data synchronization operation response message to the active centralized unit;

The main centralized unit synchronizes the configuration data to the distributed unit;

After the data synchronization is completed, the active centralized unit sends a delete backup data operation message to the standby centralized unit;

The standby centralized unit analyzes the delete backup data operation message, deletes the recorded data operation, and sends a delete backup data response message to the main active centralized unit.

Preferably, the upgrading to the current active centralized unit in step 3) specifically includes: the active centralized unit notifies the standby centralized unit, and releases the active identification code; the standby centralized unit modifies its own identification code to the active identification code.

Preferably, in the step 1), the backup centralized unit is set in the backup control module or the service module.

Preferably, the method further includes: restarting as the current standby centralized unit after the main centralized unit is reset.

Compared with the prior art, the beneficial effects of the present invention are: firstly, because the present invention adds the configuration data backup centralized unit in the database system, when the main centralized unit fails, it can be upgraded to the main active unit to continue to provide database functions, and the existing Some system changes are small, and the implementation is convenient; when the main control module needs to be upgraded, it will not cause interruption to the business. Secondly, since the present invention is recorded in real time by the standby centralized unit during the initialization process of the distributed unit, if the main centralized unit fails or resets when the distributed unit is initialized, it can also be promoted from the standby centralized unit to the current active centralized unit, and the distribution can be completed according to the recording results. The initialization of the unit realizes the normal start of the business module; because the configuration data that the backup centralized unit records changes during the data synchronization operation of the present invention, it can be guaranteed that even if the main centralized unit fails or resets at this time, the backup centralized unit can also be used according to the recorded results. Complete the data synchronization of all distribution units to ensure the consistency of the entire database system to the greatest extent.

In addition, to add a standby centralized unit in the database system, it is only necessary to add two notifications when the distribution unit registers and requests configuration data and when the initialization ends, and backs up the initialized distribution unit attributes and status to complete the backup of the distribution unit startup phase; in the configuration data When a change occurs, add a backup process and add a cancel backup process when the data operation is synchronized to all distribution units to realize the backup of the data operation without modifying the original process, which is simple to implement. That is to say, the processing after the configuration data backup centralized unit is added and the processing when there is no backup centralized unit are carried out in a unified process, which is convenient for program realization.

Description of drawings

Fig. 1 is the block diagram of the configuration database system of prior art;

Fig. 2 is a block diagram of the distributed configuration database system of the present invention;

Fig. 3 is the flowchart of backup configuration database of the present invention;

Fig. 4 is the startup process flowchart of configuration data distribution unit in the present invention;

Fig. 5 is a flow chart of data synchronization processing for configuring a data master centralized unit in the present invention.

Detailed ways

The invention can realize the normal initialization of the configuration data distribution unit and the normal startup of the service module when the main control module fails or is reset, and at the same time ensures the consistency of the configuration data in the entire distributed configuration database system. The present invention adds a backup centralized unit for configuration data in the configuration database system. When the original centralized unit for configuration data breaks down and cannot provide database functions, the backup centralized unit provides database functions, which does not affect the initialization of the configuration data distribution unit. And the start of the business module can also ensure that after the original configuration data centralized unit fails, the changes in the configuration data before the failure are synchronized to all configuration data distribution units, ensuring the consistency of configuration data in the entire configuration database system.

Please refer to FIG. 2, which is a block diagram of the distributed configuration database system of the present invention. The distributed configuration database system includes a configuration data distribution unit 210, a configuration data master centralization unit 220, and a configuration data backup centralization unit 230; The unit 230 communicates, and the configuration data main centralized unit 220 and the configuration data backup centralized unit 230 can communicate with each other.

Wherein, the configuration data distribution unit 210 exists on the business module, the configuration data main centralized unit 220 exists on the main control module, and the configuration data backup centralized unit 230 exists on the non-main control module, and the non-main control module may be a backup control module or business module. The configuration data main centralized unit 220 is the original configuration data centralized unit, and the configuration data backup centralized unit 230 is a newly added unit of the present invention.

Each unit includes a message receiving and processing subunit and a message construction sending subunit, wherein the message receiving and processing subunit is used to receive messages from other units and process them to generate processing results, and the message construction sending subunit is used to construct message and send it to other units.

Please refer to Fig. 3, when the configuration data main centralized unit 220 works normally, the configuration data standby centralized unit 230 backs up various configuration data, and does not participate in control at this moment; when the configuration data main used centralized unit 220 breaks down, the configuration The data backup centralized unit 230 will automatically be upgraded to the current configuration data master centralized unit to provide database functions.

In the present invention, so-called backing up configuration data includes:

(1) The distribution unit 210 that records the initialization being processed by the centralization unit 230 for the configuration data master. In this way, after the active centralized unit 230 is reset or fails, the standby centralized unit 220 can provide configuration data to the distribution unit 210 being initialized according to the records at that time, so as to ensure the normal startup of the service modules.

(2) After the configuration data is changed, record the changed configuration data. In this way, after the active centralized unit 220 resets or fails, the standby centralized unit 230 is upgraded to the current active centralized unit, and the changed configuration data of the record is resynchronized to all distribution units 210, ensuring the configuration of all units in the database system. Consistency of configuration data.

The process of backing up the configuration data by the configuration data backup centralization unit 230 when the configuration data distribution unit 210 is started and the configuration data master centralization unit 220 initiates data operation synchronization is described below respectively.

The so-called upgrade to the master centralized unit for configuration data refers to: when the master centralized unit 220 for configuration data fails, it will notify the backup centralized unit 230 and modify the identity of the backup centralized unit 230 in the system, so there is still a system that can provide The primary centralized unit of database functionality. In the system, each unit identifies each other through identification codes. For example, the identification code of the main centralized unit for configuration data is "1", the identification code of the backup centralized unit for configuration data is "2", and the identification code of the configuration data distribution unit adopts other symbols; the identification code of the configuration data distribution unit is " The configuration data of 1” is communicated and controlled by the central unit. Therefore, when the active centralized unit 220 breaks down, it will release the active identification code and notify the standby centralized unit 230; Use the identification code "1".

When the fault of the original active centralized unit is reset, the reset active centralized unit restarts,

However, at this time, it starts as a standby centralized unit and becomes a standby centralized unit to back up the current active centralized unit.

Please refer to Figure 4, the configuration data distribution unit startup processing flow includes steps:

(1) The configuration data distribution unit 210 registers with the master centralized unit 220 of the configuration data, and reports the data table attributes of this business module, and requests the master centralized unit 220 to synchronize data according to the reported data table attributes;

(2) The configuration data master uses the centralized unit 220 to receive the registration request message, and records the attribute information of the business module data table;

(3) The configuration data main centralized unit 220 constructs a registration notification message according to the received registration request message, and additionally requests the distribution unit attribute of the configuration data;

(4) The configuration data main centralized unit 220 sends the registration notification message to the configuration data standby centralized unit 230;

(5) configuration data standby centralized unit 230 receives the registration notification message, records the corresponding distribution unit data table attribute information and the state of the distribution unit as an initialization state, and constructs the response message of the registration notification;

(6) The configuration data standby centralized unit 230 responds to the configuration data active centralized unit 220 with a registration notification response message;

(7) After receiving the registration notification response message from the configuration data backup unit 230 , the configuration data main centralized unit 220 constructs a response message to the configuration data distribution unit 210 and sends it to the registered configuration data distribution unit 210 .

(8) The configuration data main centralized unit 220 sends the data table record message to the configuration data distribution unit 210;

(9) configuration data distribution unit 210 receives the synchronous data table recording message, and takes effect on the distribution unit according to the data table attribute; constructs the response message;

(10) The configuration data distribution unit 210 sends a response message to the configuration data master concentration unit 220;

If the configuration data distribution unit 210 data table has not been synchronized, repeat steps (8) to (10);

(11) The configuration data master uses the centralized unit 220 to send the data table synchronization end message to the configuration data distribution unit 210;

(12) The configuration data distribution unit 210 receives the data table synchronization end message, completes the initialization of this unit, and constructs a response message;

(13) The configuration data distribution unit 210 sends the data table synchronization end response message to the configuration data main centralized unit 220;

(14) The configuration data master uses the centralized unit 220 to send the data table synchronization end notification message of the corresponding distribution unit to the configuration data backup centralized unit 230;

(15) After the configuration data standby centralized unit 230 receives the data table synchronization end notification message, the initialization state of the corresponding distribution unit of the record is modified to the end state; construct a response message;

(16) The configuration data backup centralized unit 230 sends a data table end notification response message to the configuration master centralized unit 220 .

Please refer to Figure 5, the data operation processing flow initiated by the centralized unit for configuring the data master includes steps:

(1) Configure the data master to perform data operations (including data addition, deletion, modification, query) on the centralized unit 220;

(2) configuration data master uses the centralized unit 220 to construct a data operation synchronization message packet;

(3) The configuration data master uses the centralized unit 220 to send a data operation synchronization message packet to the configuration data backup centralized unit 230;

(4) configuration data standby centralized unit 230 receives the data operation synchronization message packet, and makes this data operation effective in this unit; and records this data operation;

(5) The configuration data standby centralized unit 230 sends a data operation synchronous response message to the configuration data main centralized unit 220;

(6) configuration data master uses the centralized unit 220 to construct a data operation synchronization message packet;

(7) The configuration data master uses the centralized unit 220 to send a data operation synchronization message packet to the configuration data distribution unit 210;

(8) Configure the data distribution unit 210 to make this data operation effective in this unit; construct a response message packet;

(9) The configuration data distribution unit 210 sends a data operation synchronization response message to the configuration data master centralized unit 220;

If there are multiple configuration data distribution units, it is necessary to repeat (6) to (9) until sending a synchronization message of completing data operation to all distribution units, please get a response message;

(10) After the configuration data main centralized unit 220 has synchronized the data operation to all the configuration data distribution units 210, delete this data operation, and construct a message packet for deleting the backup data operation;

(11) The configuration data main centralized unit 220 sends a delete backup data operation message to the configuration data backup centralized unit 230;

(12) After receiving the delete backup data operation notification message, the configuration data standby centralization unit 230 deletes the corresponding data operation backed up by this unit, and constructs a response message;

(13) The configuration data backup centralization unit 230 sends a deletion backup data response message to the configuration data primary centralization unit 220 .

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (6)

1. the backup method of decentralized configuration Database Systems comprises step:

1) is provided with and starts standby centralized unit;

2) when the master uses the centralized unit operate as normal, described standby centralized unit backs up with the configuration data in the centralized unit main;

3) when the master was not normal with centralized unit work, standby centralized unit was upgraded to current master and uses centralized unit, enters normal operating condition according to the aforementioned arrangements data;

It is characterized in that described step 2) further comprise:

21) the main initialized distribution unit of handling with centralized unit of unit record in the trim set;

22) when the master carries out the data sync operation with centralized unit, the configuration data that unit record changes in the trim set;

In the described step 3), standby centralized unit is according to step 21) in just be recorded as and provide configuration data at initialized distribution unit; Standby centralized unit is according to step 22) in record the configuration data that changes is synchronized to distribution unit.

2. the backup method of decentralized configuration Database Systems according to claim 1 is characterized in that, described step 21) specifically comprise:

The configuration data distribution unit sends login request message to the configuration data master with centralized unit;

The configuration data master resolves this login request message with centralized unit; Send registration notification message to the standby centralized unit of configuration data;

The described registration notification message of unit resolves in the configuration data trim set, the state that writes down corresponding distribution unit tables of data attribute information and distribution unit is an init state, responds the registration notification response message to the configuration data master with centralized unit;

After the configuration data master receives the registration notification response message of configuration data stand-by unit with centralized unit, be configured the data sync of data distribution unit;

After the initialization of configuration data distribution unit was finished, the configuration data master sent the synchronous end notification message of tables of data of corresponding distribution unit for the standby centralized unit of configuration data with centralized unit;

The standby centralized unit of configuration data receives after the synchronous end notification message of tables of data, and the init state of corresponding distribution unit of record is revised as done state; Send tables of data end notification response message to the configuration data master with centralized unit.

3. the backup method of decentralized configuration Database Systems according to claim 1 is characterized in that, described step 22) in record specifically comprise:

The master carries out data manipulation with centralized unit;

The main centralized unit of using sends the data sync operation information to standby centralized unit;

The described data sync operation information of unit resolves in the trim set operates in the also record data operation that self comes into force with aforementioned data; Send data sync operation acknowledge message to main with centralized unit;

The master is synchronized to distribution unit with centralized unit with configuration data;

After data sync was finished, the main transmission to standby centralized unit with centralized unit deleted the Backup Data operation information;

The described deletion Backup Data of unit resolves operation information in the trim set, the data manipulation of deletion record sends deletion Backup Data response message to main with centralized unit.

4. according to the backup method of each described decentralized configuration Database Systems of claim 1 to 3, it is characterized in that, be upgraded to current master in the described step 3) and be specially with centralized unit: the master notifies standby centralized unit with centralized unit, and discharges the main identification code of using; Standby centralized unit is revised as the main identification code of using with the self identification sign indicating number.

5. according to the backup method of each described decentralized configuration Database Systems of claim 1 to 3, it is characterized in that, in the described step 1), standby centralized unit is arranged on standby control module or business module.

6. according to the backup method of each described decentralized configuration Database Systems of claim 1 to 3, it is characterized in that, also comprise: after the master resets with centralized unit, restart as unit in the current trim set.

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