CN106789377B - Service parameter updating method of network element cluster - Google Patents
Service parameter updating method of network element cluster Download PDFInfo
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- CN106789377B CN106789377B CN201710183901.2A CN201710183901A CN106789377B CN 106789377 B CN106789377 B CN 106789377B CN 201710183901 A CN201710183901 A CN 201710183901A CN 106789377 B CN106789377 B CN 106789377B
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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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
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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
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Abstract
The invention discloses a service parameter updating method of a network element cluster, which comprises the steps that a main network element and a plurality of auxiliary network elements form the network element cluster, and a new configuration file is obtained by monitoring the change of the configuration file stored in the main network element in the network element cluster. And reading the configuration information in the new configuration file, and updating the service parameters of the auxiliary network elements in the network element cluster according to the configuration information. The auxiliary network elements configure their own service parameters according to the configuration file of the main network element without storing the configuration file in each auxiliary network element. When the application service provided by the network element cluster changes, all the network element self-service parameters in the network element cluster can be configured only by modifying the configuration file stored in the main network element.
Description
Technical Field
The present disclosure relates to the field of internet application technologies, and in particular, to a method and an apparatus for updating service parameters of a network element cluster.
Background
With the development of internet application technology, the access amount of servers providing application services is increasing. In order to enhance the response and processing capacity of the server to the application service, the software and hardware system resources of one or more servers are divided into a plurality of network elements for processing the same application service. The network elements form a network element cluster, and the network elements process the access requests of the external network in turn by adopting a load balancing technology.
In the current network element cluster, if the application service is changed, each network element needs to modify the service parameters one by one, which greatly increases the workload of operation and maintenance and is not beneficial to the working continuity of the network element cluster.
In a specific application scenario, a network element cluster using load balancing provides an application service for data capturing of a web page. When the application service is changed and the captured web page is changed from the newwave home page to the hundredth news home page, the service parameters corresponding to the network elements need to be modified one by one. For example, the URL pointing address in the service parameter needs to be changed from the newwave homepage address to the hundredth news homepage address.
Disclosure of Invention
In order to solve the technical problem that service parameters of network elements cannot be modified conveniently and quickly when application services provided by a network element cluster are changed in the related art, the disclosure provides a method and a device for updating service parameters in the network element cluster.
A method for updating service parameters in a network element cluster, which comprises a main network element and a network element cluster consisting of a plurality of auxiliary network elements, the method comprises the following steps:
monitoring the change of the configuration files stored in the main network element in the network element cluster to obtain new configuration files;
reading the configuration information in the new configuration file;
and updating the service parameters of the auxiliary network element according to the configuration information.
An apparatus for updating service parameters in a network element cluster, the apparatus comprising:
the monitoring device is used for monitoring the change of the configuration files stored in the main network element in the network element cluster to obtain new configuration files;
the reading device is used for reading the configuration information in the new configuration file;
and the updating device is used for updating the service parameters of the auxiliary network element according to the configuration information.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: and monitoring the change of the configuration file stored in the main network element in the network element cluster through the network element cluster consisting of the main network element and the plurality of auxiliary network elements to obtain a new configuration file. And reading the configuration information in the new configuration file, and updating the service parameters of the auxiliary network element according to the configuration information. If the application service changes, only the configuration file of the main network element needs to be modified. And updating the service parameters of the network elements in the network element cluster according to the modified configuration file, so that the service parameters of the network elements in the network element cluster do not need to be modified one by one.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flow diagram illustrating service parameter updating for a cluster of network elements in an exemplary embodiment.
Fig. 2 is a flowchart illustrating a specific implementation of step 110 in the method according to the corresponding embodiment in fig. 1.
Fig. 3 is a flowchart illustrating a specific implementation of step 150 in the method according to the corresponding embodiment in fig. 1.
Fig. 4 is a flowchart illustrating a specific implementation of step 153 of the method according to the corresponding embodiment in fig. 3.
Fig. 5 is a schematic diagram illustrating service parameter updating for a network element cluster according to another example embodiment.
Fig. 6 is a block diagram illustrating an apparatus for updating service parameters of a network element cluster according to an exemplary embodiment.
Fig. 7 is a block diagram of one embodiment of a listening device in a device according to the corresponding embodiment of fig. 6.
FIG. 8 is a block diagram of an update apparatus in an apparatus according to the corresponding embodiment of FIG. 6, in one embodiment.
Fig. 9 is a block diagram of one embodiment of a listening unit in an apparatus according to the corresponding embodiment of fig. 8.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Fig. 1 is a flowchart illustrating a method for updating service parameters in a network element cluster according to an example embodiment. As shown in fig. 1, the method includes, but is not limited to, the following steps:
in step 110, the change of the configuration file stored in the main network element in the network element cluster is monitored to obtain a new configuration file.
The network element refers to a service unit which is composed of various software and hardware system resources of the server and realizes a specific function or provides a specific application service. A network element may be only a part of a server, or may be an independent server or a combination of multiple servers.
The network element cluster is to divide all the software and hardware system resources of one or more servers into a plurality of network elements for processing the same application service in order to enhance the response and processing capacity of the servers to the application service, and the network element cluster is composed of a plurality of network elements. And a plurality of network elements in the network element cluster provide the same application service for the user in turn. The network element for installing the configuration file in the network element cluster is a main network element, the configuration file is not installed in the network element cluster, and the network element for setting the service parameter of the network element cluster according to the configuration file of the main network element is an auxiliary network element.
The service parameters refer to a series of parameters for setting various software and hardware system resources of the network element according to different application service requirements, for example, a URL pointing address, a web browser port, a cache size, and the like. And modifying the service parameters of the network element by reading the configuration information so as to meet the requirements of the application service on software and hardware system resources.
The configuration information refers to a set of a series of information according to which the service parameters of the network element are configured. The configuration information is different for different application services. Thus, if the application service changes, the configuration information also needs to be modified accordingly.
A configuration file refers to a file for storing configuration information, and the configuration file is generally stored on a network element.
Only the configuration files of the network element cluster are installed on the main network element, and the configuration files stored on the main network element are monitored. When the configuration file is modified, the modified new configuration file can be obtained in time by monitoring the change of the configuration file.
In step 130, the configuration information in the new configuration file is read.
The software and hardware system resources of the network element to be set are different corresponding to a specific application service. If the application service changes, the corresponding service parameters also need to be modified accordingly.
The application service is a network or data application service provided for a user through various software and hardware modules of the network element. For example, a user obtains data in a specified webpage, which is of interest to the user, through a webpage data crawling service provided by a network element.
By monitoring the change of the configuration file of the main network element, once the changed configuration file is monitored, the configuration information in the configuration file is read, other auxiliary network elements in the network element cluster are informed in time, and the service parameters of the auxiliary network elements are modified according to the new configuration file.
In step 150, the service parameters of the auxiliary network element are updated according to the configuration information.
If the application service provided by the network element cluster changes, each network element in the network element cluster needs to re-set the software and hardware system resources of the network element cluster by configuring the service parameters of the network element cluster so as to meet the new application service requirement.
In a specific embodiment, the application service provided by the network element cluster for the user is a web data crawling service. The configuration information corresponding to the webpage data grabbing service comprises webpage address information, keywords or topics, size thresholds of grabbed files, topic filtering information and the like, which are pointed by webpage data grabbing.
If the web page data crawling service changes, for example, the web page to be crawled is changed from the newwave homepage to the hundredth news homepage. The data capture address information in the configuration information corresponding to the web page data capture service needs to be changed from the newwave homepage address to the hundredth news homepage address. The service parameter of which the corresponding configuration information is data capture address information is a URL (uniform resource Locator) pointing address. And capturing address information according to the changed data, and setting the service parameter URL pointing address as a Baidu news homepage address by the auxiliary network element.
When the application service is changed, only the configuration file stored by the main network element in the network element cluster needs to be modified, and a new modified configuration file is obtained. And the auxiliary network element modifies the service parameters of the auxiliary network element by reading the configuration information in the new configuration file and according to the read configuration information. The service parameters of all the network elements in the network element cluster can be updated without modifying the service parameters of each network element in the network element cluster one by one and restarting each network element.
The method for updating service parameters of a network element cluster shown in another exemplary embodiment further includes step 101 before step 110.
In step 101, backup storage of the configuration file is performed when the main network element is powered on.
Before monitoring the configuration file stored on the main network element, the configuration file is backed up and stored to save the initial configuration information of the network element cluster.
The initial configuration information refers to configuration information according to which the service parameters of the main network element are set for the first time corresponding to a specific application service. Alternatively, the initial configuration information refers to configuration information automatically generated based on a modification log generated by first setting the service parameters of the master network element itself.
If the application service changes, the initial configuration information in the configuration file above the corresponding main network element is modified correspondingly. After the application service has been changed, it may be necessary to fall back to the original application service due to the user's needs. By backing up and storing the configuration file when the main network element is started, when the original application service is required to be returned, only the initial configuration information which is backed up is required to be read, and the network element cluster can be returned to the original initial state
In one embodiment, if the web page data crawling service changes, the web page to be crawled is changed from the newwave homepage to the hundredth news homepage. The web pages to be captured in the web page data capturing service are changed from the hundredth news homepage to the original newwave homepage.
By backing up and storing the initial configuration information, if the changed application service needs to be backed up to the original application service, the network element cluster can be backed up to the initial state corresponding to the original application service only by reading the backed up and stored initial configuration information by the main network element.
Fig. 2 is a flowchart illustrating a specific implementation of step 110 in the method according to the corresponding embodiment in fig. 1. As shown in fig. 2, the step 110 further includes the following steps:
in step 111, parameter information of the configuration file in the main network element is obtained through a predetermined period.
The parameter information refers to a series of parameters reflecting the file content attribute of the configuration file, such as the modification date and storage path of the configuration file.
When the configuration file is modified, some parameter information of the configuration file may be automatically modified accordingly, for example, the configuration file stored on the main network element is modified and then saved again, and the storage path and the storage date of the configuration file stored on the main network element may be changed. The storage path and the storage date of the configuration file in the main network element are obtained through a preset period, and whether the configuration file is modified or not can be judged quickly.
In step 113, it is determined whether the parameter information of the current cycle and the previous cycle are consistent.
The method of directly monitoring the content of the configuration file to determine whether the configuration file changes can accurately determine whether the configuration file changes, but the method of monitoring the configuration file needs to read the content of the configuration file every time, which increases the operation processing overhead of the system.
And acquiring the storage path and the storage date of the configuration file in the main network element through a preset period. By comparing the modification date or the storage path of the configuration file in the current period and the previous period, whether the configuration file is modified after the previous period can be quickly judged.
In step 115, when the respective parameter information of the current period is inconsistent with the respective parameter information of the previous period, a new configuration file is obtained according to the parameter information of the current period.
And acquiring the parameter information of the configuration file in the main network element through a preset period. And then judging whether the respective parameter information of the current period is consistent with the respective parameter information of the previous period, and acquiring a new configuration file according to the parameter information of the current period when the respective parameter information of the current period is inconsistent with the respective parameter information of the previous period. The content of the configuration file does not need to be directly read every time, and the operation processing overhead of the system is effectively reduced.
In a specific embodiment, the configuration file stored on the main web element is monitored through a monitoring file function fs.watchfile function in a file operation module provided by node.js software. And checking whether the parameter information of the configuration file is modified at regular intervals, wherein the parameter information of the current period is inconsistent with the parameter information of the previous period, and acquiring a new configuration file according to the parameter information of the current period.
Js software is running development software based on a JavaScript compiler and is used for conveniently building data-intensive real-time data service application which is high in response speed and suitable for running on distributed equipment. Js software uses a module to divide different functions, and a file operation module in the node.js software provides a file monitoring function fs.watch file function for monitoring whether a file is changed or not.
Fig. 3 is a flowchart illustrating a specific implementation of step 150 in the method according to the corresponding embodiment in fig. 1. As shown in fig. 3, this step 150 further includes the steps of:
in step 151, the configuration information is copied to the cache database to replace the original configuration information in the cache database.
The cache database is a database which provides a data caching function by establishing a specific data structure and a memory storage structure. The cache database provides a data caching function by managing a cache medium, and also manages the access mode and the life cycle of cache data.
The cache data is data used in the application program and temporarily stored in a cache in order to improve the running performance of the application program, and the application program operates the data from the cache during running. The medium of the cache for storing the cache data is generally a memory, so that the read-write speed of the cache data is high, but if the amount of the cache data stored in the cache is very large, the hard disk is also used as the medium.
And copying the new configuration information to the cache database, wherein the new configuration information replaces the original configuration information in the cache database.
In an exemplary embodiment, the original configuration information is stored in a cache database having a first-in-first-out stack storage structure, and when the new configuration information is obtained, the new configuration information is stored in the cache database having a first-in-first-out stack storage structure. Since the cache database has a first-in first-out stack storage structure, the configuration information already stored in the cache database is replaced by the new configuration information written later.
The stack storage structure is a data storage structure for storing data in sequence, and has a stack storage area with a fixed cache size, when data is written on the top of the stack storage area, the data stored at the tail of the stack is cleared, that is, the data stored first is cleared first.
In a particular embodiment, a Redis database is employed as the cache database. The Redis database not only can persistently store data, but also supports various data structures and memory storage structures. Through the memory management function of the Redis database, the cache database with the first-in first-out stack storage structure can be realized.
In step 153, the replacement of the configuration information in the cache database is monitored, and the service parameters of the auxiliary network element are updated.
And monitoring the replacement of the configuration information in the cache database, and updating the service parameters of the auxiliary network element.
Specifically, when the configuration information in the cache database is replaced, the main network element issues the configuration information modification message through the message issuing pipeline. The auxiliary network element reads the configuration information in the cache database by monitoring the configuration information modification message in the message distribution pipeline and according to the monitored configuration information modification message, and updates the service parameters of the auxiliary network element according to the configuration information.
The message publishing pipeline refers to that in a message subscribing and publishing communication mode, a sender sends a message to the message publishing pipeline, and a subscriber receives the message by subscribing the message publishing pipeline. A sender may send one message to multiple message publication pipes, and one message publication pipe may be subscribed to by multiple recipients.
Wherein, the message publishing means that the sender sends the message to the message publishing pipeline. Message subscription means that the receiver subscribes to the message from the message pipe. The sender is only responsible for sending messages to the message publishing pipe and the subscriber is only passively receiving messages. The message publishing pipeline is used for storing messages from publishers and sending messages to subscribers when the subscribers subscribe.
Fig. 4 is a flowchart illustrating a specific implementation of step 153 of the method according to the corresponding embodiment in fig. 3. As shown in fig. 4, the step 153 further includes the following steps:
in step 531, a configuration information replacement change message is received that is sent in place of the configuration information in the cache database.
And receiving a configuration information replacement change message sent instead of the configuration information in the cache database.
Specifically, when the configuration information in the cache database is replaced, the main network element issues the configuration information modification message through the message issuing pipeline. The auxiliary network element receives the configuration information modification message by monitoring the message distribution pipeline. That is, the auxiliary network element receives the configuration information replacement change message sent instead of the configuration information in the cache database by subscribing the message to the message publishing pipeline.
In step 533, the service parameters of the auxiliary network element are updated in response to the configuration information change message.
And monitoring the configuration information modification message by the auxiliary network element through subscribing the message of the message publishing channel. When the auxiliary network element monitors the configuration information modification message, the auxiliary network element immediately reads the configuration information in the cache database and updates the service parameters of the auxiliary network element according to the configuration information.
In a specific embodiment, the message publishing and the message subscription of the configuration information modification message are realized through a message publishing channel established by a Redis database. When the main network element sends the configuration information modification message to the message publishing pipeline established by the Redis database, all the auxiliary network elements subscribing to the message publishing pipeline receive the configuration information modification message, then read the configuration information in the cache database according to the configuration information modification message, and update the service parameters of the auxiliary network elements according to the configuration information.
Fig. 5 is a schematic diagram illustrating a service parameter updating method in a network element cluster according to another exemplary embodiment.
As shown in fig. 5, the application service provided by the network element cluster changes and the configuration file on the primary network element is updated. Monitoring the change of the configuration file, and reading the configuration information in the configuration file when the configuration file is judged to have changed, and replacing the original configuration information in the Redis cache database with the configuration information.
And the main network element issues the configuration information change message, and the auxiliary network element immediately reads the configuration information in the Redis cache database after receiving the configuration information change message. According to the configuration information, other auxiliary network elements in the network element cluster update their service parameters, that is, the service parameters of other auxiliary network elements in the network element cluster do not need to be updated one by one.
Fig. 6 is a block diagram illustrating an apparatus for updating service parameters of a network element cluster according to an exemplary embodiment. As shown in fig. 6, the apparatus includes, but is not limited to: a monitoring device 610, a reading device 630 and an updating device 650.
A monitoring device 610, configured to monitor a change in a configuration file stored in a main network element in a network element cluster, so as to obtain a new configuration file;
reading means 630, configured to read the configuration information in the new configuration file;
updating means 650, configured to update the service parameter of the auxiliary network element according to the configuration information.
An apparatus according to claim 6, further comprising backup means for performing backup storage of the configuration file when the main network element is powered on.
Fig. 7 is a block diagram of one embodiment of a listening device 610 in a device according to the corresponding embodiment of fig. 6. As shown in fig. 7, the listening device 610 includes but is not limited to: an acquisition unit 611, a judgment unit 613, and an execution unit 615.
An obtaining unit 611, configured to obtain parameter information of a configuration file in a main network element through a predetermined period;
a judging unit 613, configured to judge whether parameter information of a current cycle is consistent with parameter information of a previous cycle;
the execution unit 615 is configured to, when the parameter information of the current cycle is inconsistent with the parameter information of the previous cycle, obtain a new configuration file according to the parameter information of the current cycle.
Fig. 8 is a block diagram of an embodiment of an update apparatus 650 in an apparatus according to the corresponding embodiment of fig. 6. As shown in fig. 8, the updating device 650 includes but is not limited to: instead of the unit 651, a listening unit 653.
A replacing unit 651, configured to copy the configuration information to the cache database to replace the original configuration information in the database;
the monitoring unit 653 is configured to monitor the replacement of the configuration information in the cache database, and update the service parameters of the auxiliary network element.
Fig. 9 is a block diagram of one embodiment of a listening unit 653 in an apparatus according to the corresponding embodiment of fig. 8. As shown in fig. 9, the listening unit 653 includes, but is not limited to: receive message subunit 731, response message subunit 733.
A receive message subunit 731 configured to receive a configuration information change message sent in place of the configuration information in the cache database;
the response message subunit 733, configured to update the service parameter of the auxiliary network element in response to the configuration information change message.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (6)
1. A method for updating service parameters of a network element cluster is characterized by comprising the network element cluster consisting of a main network element and a plurality of auxiliary network elements, wherein the network element cluster is used for processing the same application service, the main network element is a network element for installing a configuration file, the auxiliary network elements are network elements for setting self service parameters according to the configuration file of the main network element, and the method comprises the following steps:
monitoring the change of the configuration files stored in the main network element in the network element cluster to obtain new configuration files;
reading the configuration information in the new configuration file;
copying the configuration information to a cache database to replace the original configuration information in the cache database;
receiving a configuration information change message sent by a message distribution pipeline established in the cache database instead of the configuration information in the cache database, wherein the message distribution pipeline is used for sending the configuration information change message to the plurality of auxiliary network elements at the same time;
and responding to the configuration information change message, and updating the service parameters of the auxiliary network elements.
2. The method of claim 1, wherein before the change of the configuration file stored in the master network element in the listening network element cluster, the method further comprises:
and performing backup storage of the configuration file when the main network element is started.
3. The method of claim 1, wherein the monitoring of the change in the configuration file stored in the main network element in the network element cluster to obtain a new configuration file comprises:
acquiring parameter information of the configuration file in the main network element through a preset period;
judging whether the parameter information of the current period is consistent with the parameter information of the previous period, if not, judging that the parameter information of the current period is consistent with the parameter information of the previous period
And acquiring a new configuration file according to the parameter information of the current period.
4. A service parameter updating device of a network element cluster is characterized by comprising the network element cluster which is composed of a main network element and a plurality of auxiliary network elements, wherein the network element cluster is used for processing the same application service, the main network element is a network element for installing a configuration file, the auxiliary network elements are network elements for setting self service parameters according to the configuration file of the main network element, and the device comprises:
the monitoring device is used for monitoring the change of the configuration files stored in the main network element in the network element cluster to obtain new configuration files;
the reading device is used for reading the configuration information in the new configuration file;
updating means for updating the service parameters of the auxiliary network element according to the configuration information;
the updating apparatus further includes:
the replacing unit is used for copying the configuration information to the cache database to replace the original configuration information in the database;
the monitoring unit is used for monitoring the substitution of the configuration information in the cache database and updating the service parameters of the auxiliary network element;
the listening unit further comprises:
a message receiving subunit, configured to receive a configuration information change message that is sent through a message distribution pipeline established in a cache database in place of configuration information in the cache database, where the message distribution pipeline is configured to send the configuration information change message to the plurality of auxiliary network elements at the same time;
and the response message subunit is configured to respond to the configuration information change message and update the service parameters of the multiple auxiliary network elements.
5. The apparatus of claim 4, further comprising:
and the backup device is used for backing up and storing the configuration file when the main network element is started.
6. The apparatus of claim 4, wherein the listening apparatus further comprises:
an obtaining unit, configured to obtain parameter information of the configuration file in the main network element through a predetermined period;
the judging unit is used for judging whether the parameter information of the current period is consistent with the parameter information of the previous period;
and the execution unit is used for acquiring a new configuration file according to the parameter information of the current period when the parameter information of the current period is inconsistent with the parameter information of the previous period.
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