CN115714722A - Dynamic configuration method, device and system for cluster network - Google Patents
Dynamic configuration method, device and system for cluster network Download PDFInfo
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Abstract
The invention discloses a dynamic configuration method of a cluster network, wherein the cluster comprises N nodes of data processing service, the number of the nodes providing data processing service externally is M, M is less than N, only the nodes providing data processing service externally configure an external service network, and network dynamic configuration is carried out on any node, the method comprises the following steps: initializing a service state and a network; the service is a data processing service depending on an external network, the state content of the service comprises a key and a value, the key and the value are stored in a memory database, the key is a unique identifier, and the value comprises a timestamp and a node identifier; updating the service state; and managing service exception. The method of the invention has simple steps, and can realize the configuration of a plurality of addresses for the same network and the configuration of a plurality of groups of addresses of a plurality of networks in a cluster.
Description
Technical Field
The invention belongs to the technical field of cluster control, and particularly relates to a method, a device and a system for dynamically configuring a cluster network.
Background
The traditional data processing system usually adopts a main/standby mode with a host as a center, and with the increase of data processing scale and complexity, the centralized system architecture cannot meet the increasingly complex and diversified data processing requirements.
In recent years, due to the development of data processing services and the requirement of autonomous control, a distributed data processing system is required, which has the characteristics of strong expansibility, high reliability and the like. A distributed data processing system typically only requires a portion of the nodes to have the function of providing external data processing services, and the number of network addresses providing external data processing services may be less than the number of cluster nodes. It is now conventional to use fixed nodes to provide external services and to configure fixed network settings. The method cannot give full play to the advantages of the cluster, and if the nodes of the external service in the cluster fail, the dynamic migration of the service cannot be automatically carried out. In addition, a virtual IP mechanism is adopted, and a conventional virtual IP mechanism is that one virtual IP is configured in a cluster and used for a certain network, so that multiple virtual IPs cannot be virtualized for the same network, and each IP is on different nodes; it is also not possible to implement multiple groups of virtual IP for multiple networks and to implement an application scenario where each group of IP is on a different node.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for dynamically configuring a cluster network, which has simple steps and reasonable design, and can configure multiple addresses for the same network and multiple groups of addresses for multiple networks in a cluster.
The first aspect of the present invention provides a method for dynamically configuring a cluster network, where the cluster includes N nodes for data processing services, the number of nodes for providing data processing services to the outside is M, and M is smaller than N, only the nodes for providing data processing services to the outside configure an external service network, and network dynamic configuration is performed on any node k, where k, N, and M are positive integers, and k is greater than or equal to 1 and less than or equal to N, and the method includes the following steps:
initializing a service state and a network; the service is a data processing service depending on an external network, the state content of the service comprises a key and a value, the key and the value are stored in a memory database, the key is a unique identifier, and the value comprises a timestamp and a node identifier;
updating the service state;
and managing service exception.
The above dynamic configuration method for cluster network initializes service state and network on any node k, and includes the following specific processes:
101, initializing, namely enabling i =1, wherein a service state Role is a Ready state;
step 103: reading a value corresponding to the key;
step 108, if the key value is inconsistent with the key value read last time, setting i = i +1, and executing step 109;
step 111, closing the external service network, and executing step 102.
In the above method for dynamically configuring a cluster network, the updating of the service state, for a node k, specifically includes the following steps:
and step 210, judging whether i is greater than M, if so, executing step 207, otherwise, executing step 203.
The above dynamic configuration method for the cluster network, service exception management, specifically includes the following processes:
and if the node k is configured to the external service network but the data processing service of the node k is not started, closing the external service network of the node k.
In the above method for dynamically configuring a cluster network, the configuring an external service network specifically includes configuring an IP address, a subnet mask, a gateway, a static route, and a firewall rule for an external service;
the closing of the external service network specifically includes canceling configuration of an IP address, a subnet mask, a gateway, a static route, and a firewall rule for the external service.
In a second aspect of the present invention, a dynamic configuration apparatus for a cluster network is provided, where a cluster includes N nodes for data processing services, the number of the nodes for providing data processing services to the outside is M, and M is smaller than N, and only the nodes for providing data processing services to the outside configure an external service network, and the method for any one of the above methods includes:
the memory database reading unit is used for reading state information for externally providing data processing service from the memory database;
the memory database writing unit is used for writing the state information of the service into the memory database; a node state obtaining unit, configured to obtain a service state of a node k from a memory;
a state judgment unit, configured to judge whether the service state information changes continuously and the node identifier is consistent with the node k;
a network configuration unit for configuring a node network;
a network checking unit for judging whether the node network is configured correctly;
the network closing unit is used for canceling the IP address, the subnet mask, the gateway, the static route and the firewall rule of the external service of the configuration node;
and the service state checking unit is used for checking the service state of the node.
The third aspect of the invention provides a cluster network dynamic configuration system, which comprises at least two nodes, wherein each node can run a data processing service and a network dynamic controller; a node capable of running in-memory database services; the internal network of each node is communicated, and all nodes of data processing service and nodes of running memory database service are accessed to the network; a network for external data processing services, to which all nodes of the data processing services are connected;
the network dynamic controller comprises a cluster network dynamic configuration device supporting the above, and the number of nodes for providing data processing service to the outside of the system is less than the total number of nodes.
Compared with the prior art, the invention has the following advantages:
1. the invention can realize the configuration of a plurality of addresses for the same network and the configuration of a plurality of groups of addresses of a plurality of networks in the cluster.
2. The invention prevents the situation of repeated network configuration in the cluster by updating the service state and managing the service exception, and can realize the fault self-recovery of the data processing service without any manual intervention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a block diagram of a process for initializing a service state and a network according to the present invention.
FIG. 2 is a block diagram of a process for updating service status according to the present invention.
Fig. 3 is a block diagram of the apparatus of the present invention.
Fig. 4 is a block diagram of the apparatus of the present invention.
Detailed Description
Example 1
As shown in fig. 1 and fig. 2, a cluster network dynamic configuration method is described, where a cluster includes N nodes for data processing services, the number of nodes for providing data processing services to the outside is M, and M is smaller than N, only the nodes for providing data processing services to the outside configure an external service network, and network dynamic configuration is performed on any node k, where k, N, and M are positive integers, and k is greater than or equal to 1 and less than or equal to N, and the method includes the following steps:
initializing a service state and a network; the service is a data processing service depending on an external network, the state content of the service comprises a key and a value, the key and the value are stored in a memory database, the key is a unique identifier, and the value comprises a timestamp and a node identifier;
updating the service state;
and managing service exception.
In this embodiment, a service state and a network are initialized at any node k, and the specific process is as follows:
101, initializing, namely enabling i =1, wherein a service state Role is a Ready state;
step 103: reading a value corresponding to the key;
step 108, if the key value is inconsistent with the key value read last time, setting i = i +1, and executing step 109;
step 111, close the external service network and execute step 102.
In this embodiment, the updating of the service state, for the node k, specifically includes the following steps:
and step 210, judging whether i is greater than M, if so, executing step 207, otherwise, executing step 203.
In this embodiment, the service exception management specifically includes the following processes:
and if the node k is configured with the external service network but the data processing service of the node k is not started, closing the external service network of the node k.
In this embodiment, the configuring the external service network specifically configures an IP address, a subnet mask, a gateway, a static route, and a firewall rule for the external service;
the specific step of closing the external service network is to cancel configuration of an IP address, a subnet mask, a gateway, a static route and a firewall rule for the external service.
In this embodiment, the key value comparison in step 105 includes comparing the timestamps and the node identifiers one by one, and if there is an inconsistency, the result is considered to be inconsistent.
In this embodiment, the reading of the key value in step 103 includes: timestamp, node identification.
In this embodiment, the step 110 of configuring the external service network includes: and configuring the IP address, the subnet mask, the gateway, the static route and the firewall rule of the node k for the external service.
In this embodiment, the step 111 of closing the external service network by the node k includes: and canceling the IP address, the subnet mask, the gateway, the static route and the firewall rule which are used for external services of the configuration node k.
In this embodiment, it should be noted that the state contents of all the nodes providing data processing services to the outside are sequentially searched from the memory database.
In this embodiment, it should be noted that a node providing data processing service externally has a service sequence identifier.
Example 2
In this embodiment, it should be noted that the key is a service sequence identifier.
Since the device embodiment is substantially the same as the method embodiment, the description is simple, and the related points can be referred to the description of the method embodiment. The device embodiments described below are merely illustrative.
As shown in fig. 3, a dynamic configuration apparatus for a cluster network, where a cluster includes N nodes for data processing service, the number of the nodes for providing data processing service externally is M, and M is smaller than N, and only the nodes for providing data processing service externally configure an external service network, is used to implement the method in embodiment 1, and the apparatus includes:
a memory database reading unit 301, configured to read, from a memory database, state information of a data processing service provided to the outside;
a memory database writing unit 302, configured to write the status information of the service into the memory database;
a node state obtaining unit 303, configured to obtain a service state of a node k from a memory;
a state determination unit 304, configured to determine whether the continuous change of the service state information and the node identifier are consistent with the node k;
a network configuration unit 305 for configuring a node network;
a network checking unit 306, configured to determine whether the node network is configured correctly;
a network closing unit 307, configured to cancel the IP address, subnet mask, gateway, static route, and firewall rule of the external service of the configuration node;
and a service state checking unit 308 for checking the service state of the node.
In this embodiment, the network configuration unit 305 includes a first network configuration module, a second network configuration module, …, and an mth network configuration module, where the first to mth network configuration modules are respectively configured to configure M external service networks corresponding to the external data processing service providing nodes; the first network configuration module to the Mth network configuration module are configured with different external service networks; the first network configuration module to the Mth network configuration module configure functions of configuring corresponding IP addresses, subnet masks, gateways, static routes and firewall rules for providing data processing service nodes for external services.
In this embodiment, the state determining unit 304 includes:
a key existence judgment submodule for judging whether a key containing a service sequence identifier exists in the memory database, if not, constructing a key value, wherein the key is the service sequence identifier, the node identifier in the value is a node k identifier, and the timestamp is the current time, and writing the key value into the memory database;
a value changeability judgment sub-module, configured to judge whether a corresponding value read from the memory database is continuously changed, if the value is not continuously changed, construct a key value, where the key is the service sequence identifier, the node identifier in the value is a node k identifier, and the timestamp is the current time, and write the key value into the memory database;
and the owner judgment submodule is used for judging whether the node identifier in the value is consistent with the identifier of the node k, and if so, configuring network information corresponding to the service sequence identifier so that the node k can provide service to the outside.
Example 3
As shown in fig. 4, a cluster network dynamic configuration system includes: the three nodes of the data processing service are respectively a node 1, a node 2 and a node 3, and a node 4 runs Redis service, an internal network switch, an external network switch 1 and an external network switch 2. The network dynamic controller is respectively operated on the nodes of the three data processing services, and the network dynamic controller comprises the cluster network dynamic configuration device described in the above embodiment 2. The nodes 1, 2, 3 and 4 are connected with an intranet switch, the nodes 1, 2 and 3 are physically connected with an extranet switch 1 and an extranet switch 2, and the nodes 1, 2 and 3 run data processing services, wherein only two nodes can provide data processing services to the outside. Nodes 1, 2, and 3 physically connect the external network switch 1 and the external network switch 2, but only provide two sets of physical addresses to the outside. For example, the address of the connection external network switch 1 can only be 10.11.2.3 and 10.11.2.4, and the address of the connection external network switch 2 can only be 40.11.2.3 and 40.11.2.4. 10.11.2.3 and 40.11.2.3 are address combination 1, 10.11.2.4 and 40.11.2.4 are address combination 2, two addresses in address combination 1 can only be on the same node, and two addresses in address combination 2 can only be on the other node.
The network dynamic controller in the embodiment ensures that two nodes of the node 1, the node 2 and the node 3 are respectively configured as an address combination 1 and an address combination 2, and the data processing service is respectively run on the nodes configured with the address combination 1 and the address combination 2. If a node configured as address set 1 or address set 2 fails, the system ensures that another node can provide data processing services outside of it instead, and the system has the capability of self-recovery without any manual intervention.
According to embodiments of the present application, the cluster network dynamic configuration method and apparatus described above with reference to the embodiment diagrams and the flowchart may be implemented as a computer software component. All or a portion of the present application may be implemented as part of a computer program product, such as computer program instructions, which when executed by a computer, may invoke or provide a method or apparatus in accordance with the present application through the operation of the computer.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The embodiments are therefore to be considered in all respects as illustrative and not restrictive. The scope of the application is defined by the appended claims, rather than the description above, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A cluster network dynamic configuration method is characterized in that a cluster comprises N nodes of data processing service, the number of the nodes providing data processing service externally is M, M is smaller than N, only the nodes providing data processing service externally configure an external service network, any node k is dynamically configured with the network, k, N and M are positive integers, and k is more than or equal to 1 and less than or equal to N, the method comprises the following steps:
initializing a service state and a network; the service is a data processing service depending on an external network, the state content of the service comprises a key and a value, the key and the value are stored in a memory database, the key is a unique identifier, and the value comprises a timestamp and a node identifier;
updating the service state;
and managing service exception.
2. A method for dynamically configuring a cluster network according to claim 1, wherein: initializing a service state and a network on any node k, wherein the specific process is as follows:
101, initializing, wherein i =1, and the service state Role is Ready state;
step 102, judging whether a key SERVER-i exists in a memory database Redis, and if the key exists, executing step 103; otherwise, go to step 110;
step 103: reading a value corresponding to the key;
step 104, judging whether the node identification read in step 103 is consistent with the node identification of the node k, if not, executing step 105; otherwise, go to step 110;
step 105, comparing the key value read in the step 103 with the key value read last time, if the content of the key value is not changed, executing the step 106, otherwise, executing the step 108;
step 106, if the key value is consistent with the key value read last time, adding 1 to the key value consistency counter Count value;
step 107, if the Count is more than or equal to 3, executing step 110; otherwise, go to step 108;
step 108, if the key value is inconsistent with the key value read last time, setting i = i +1, and executing step 109;
step 109, if i > M, executing step 111, otherwise executing step 102;
step 110, constructing a new key SERVER-i, wherein the timestamp in the value is the current time, the node identifier is the node identifier of the node k, writing a key value pair consisting of the key and the value into a memory database Redis, setting a key value consistency counter Count =0, setting a service state Role = SERVER-i, and configuring an external service network so that the node k can provide service to the outside and return;
step 111, closing the external service network, and executing step 102.
3. The method for dynamically configuring a cluster network according to claim 1, wherein: the updating service state specifically comprises the following steps for a node k:
step 201, reading the service state Role of the node k;
step 202, setting i =1;
step 203, judging whether the service state Role of the node k is SERVER-i, if so, executing step 204, otherwise, executing step 209;
step 204, judging whether a key SERVER-i exists in the memory database Redis, if yes, executing step 205, otherwise, executing step 208;
step 205, reading a value corresponding to the key;
step 206, if the key exists and the node identifier in the value of the key is not consistent with the identifier of the node k, step 207 is executed, otherwise step 208 is executed;
step 207, setting the service state Role of the node k as Ready, closing the external service network of the node k, suspending the service of the node k, and then repeating the step 201;
step 208, constructing a new key SERVER-i, wherein the timestamp in the value is the current time, the node identifier is the node identifier of the node k, and the step 201 is executed when the key value pair consisting of the key and the value is written into the memory database Redis;
step 209, if i = i +1, executing step 210;
and step 210, judging whether i is greater than M, if so, executing step 207, otherwise, executing step 203.
4. The method for dynamically configuring a cluster network according to claim 1, wherein: the service exception management comprises the following specific processes:
and if the node k is configured to the external service network but the data processing service of the node k is not started, closing the external service network of the node k.
5. A method for dynamically configuring a cluster network according to claim 2, characterized in that: the configuration of the external service network specifically includes configuration of an IP address, a subnet mask, a gateway, a static route and a firewall rule for external services;
the closing of the external service network specifically includes canceling configuration of an IP address, a subnet mask, a gateway, a static route, and a firewall rule for the external service.
6. A cluster network dynamic configuration device, wherein the cluster includes N data processing service nodes, the number of the nodes providing data processing service externally is M, and M is smaller than N, only the nodes providing data processing service externally configure the external service network, and is used to implement the method of any one of claims 1 to 5, including:
the memory database reading unit is used for reading state information for externally providing data processing service from the memory database;
the memory database writing unit is used for writing the state information of the service into the memory database; a node state obtaining unit, configured to obtain a service state of a node k from a memory;
a state judgment unit, configured to judge whether the continuous change of the service state information and the node identifier are consistent with the node k;
a network configuration unit for configuring a node network;
a network checking unit for judging whether the node network is configured correctly;
the network closing unit is used for canceling the IP address, the subnet mask, the gateway, the static route and the firewall rule of the external service of the configuration node;
and the service state checking unit is used for checking the service state of the node.
7. A cluster network dynamic configuration system is characterized in that: the system comprises at least two nodes, wherein each node can run a data processing service and a network dynamic controller; a node capable of operating in-memory database services; the internal network of each node is communicated, and all nodes of data processing service and nodes of running memory database service are accessed into the network; a network for external data processing services, to which all nodes of the data processing services are connected;
the network dynamic controller comprises the cluster network dynamic configuration device in the support right claim 6, and the number of the nodes for providing data processing service to the outside of the system is less than the total number of the nodes.
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