CN108847965B - Cluster member state oscillation prevention method and device - Google Patents
Cluster member state oscillation prevention method and device Download PDFInfo
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- CN108847965B CN108847965B CN201810542881.8A CN201810542881A CN108847965B CN 108847965 B CN108847965 B CN 108847965B CN 201810542881 A CN201810542881 A CN 201810542881A CN 108847965 B CN108847965 B CN 108847965B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/62—Establishing a time schedule for servicing the requests
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Abstract
The application provides a cluster member state oscillation prevention method and device. In the method, even if the network equipment meets the condition of joining the cluster, the network equipment does not immediately join the cluster, but judges whether the specified storage medium records the equipment state information of the equipment or not, calculates the delay time when judging that the specified storage medium records the equipment state information of the equipment and determines that the equipment is delayed to join the cluster according to the cluster member time recorded in the equipment state information of the equipment, and joins the cluster after delaying the delay time, so that the method obviously can prevent the cluster member state vibration caused by repeated joining and quitting of the cluster member, further relieves the pressure of smooth configuration, operation data and the like brought by the cluster member state vibration to a main Leader in the cluster, and avoids the influence on normal service due to the cluster member state vibration.
Description
Technical Field
The present application relates to network communication technologies, and in particular, to a method and an apparatus for preventing a cluster member state from oscillating.
Background
Clustering is a technique that improves performance, reduces cost, and improves scalability and reliability. In a cluster, the roles of cluster members are mainly divided into a Leader role and a Member role. At least two members in the cluster are used for playing Leader roles, and the number of the members playing Member roles is selectable. For ease of description, the members of the cluster that assume the role of Leader are referred to as Leader, and the members of the cluster that assume the role of Member are referred to as Member.
In the cluster, the Leader participates in election to finally select one Leader as a main Leader and the other leaders as standby leaders, and the main Leader is responsible for the management of the cluster, the coordination of services and the like. When the main Leader fails, the standby Leader can execute the election process again to select a new main Leader to take over the original work of the main Leader.
In application, because a network environment is unstable, cluster members such as standby Leader or Member fail, and the like, a situation that the cluster members such as standby Leader or Member repeatedly join or leave the cluster often occurs, and the situation is called as cluster Member state oscillation. When the state of the cluster member oscillates, the master Leader in the cluster needs to repeatedly process the events of joining and exiting the cluster member. However, in general, the joining of cluster members requires the master Leader to smooth its own configuration and operation data. Thus, when the state of the cluster member oscillates, the master Leader may consume a large amount of resources on smooth configuration and running data caused by repeated joining of the cluster member, so that the master Leader does not have enough resources to process normal services, and the normal services are affected.
Disclosure of Invention
The application provides a cluster member state oscillation prevention method and device to prevent cluster member state oscillation.
The technical scheme provided by the application comprises the following steps:
a cluster member state oscillation prevention method is applied to network equipment and comprises the following steps:
when the device meets the condition of joining the cluster, firstly judging whether the appointed storage medium records the device state information of the device,
if not, adding the cluster and recording the equipment state information of the equipment in a specified storage medium; the equipment state information of the equipment at least comprises cluster member time, wherein the cluster member time is the time when the equipment joins a cluster;
if yes, when the device is determined to be delayed to be added into the cluster according to the cluster member time recorded in the device state information of the device, the delay time is calculated, and the device is added into the cluster after the delay time.
A cluster member state oscillation preventing device is applied to network equipment and comprises:
a judging unit, for judging whether the designated storage medium records the device status information of the device when the device satisfies the condition of joining the cluster,
the cluster processing unit is used for adding the cluster and recording the equipment state information of the equipment in a specified storage medium when the judgment result of the judgment unit is negative; the equipment state information of the equipment at least comprises cluster member time, wherein the cluster member time is the time when the equipment joins a cluster;
if the judgment result of the judgment unit is yes, if the equipment is determined to be delayed to join the cluster according to the cluster member time recorded in the equipment state information of the equipment, the delay time is calculated, and the equipment is joined to the cluster after the delay time.
According to the technical scheme, even if the network equipment meets the condition of joining the cluster, the network equipment does not immediately join the cluster, but judges whether the specified storage medium records the equipment state information of the equipment or not, calculates the delay time when the specified storage medium records the equipment state information of the equipment and determines that the equipment is delayed to join the cluster according to the cluster member time recorded in the equipment state information of the equipment, and joins the cluster after the delay time, so that the state oscillation of the cluster members caused by repeated joining and withdrawing of the cluster members can be obviously prevented, the pressure of smooth configuration, running data and the like brought to a main Leader in the cluster by the state oscillation of the cluster members is further relieved, and the influence on normal service due to the state oscillation of the cluster members is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flow chart of a method provided herein;
FIG. 2 is a flowchart of an implementation of step 101 provided herein;
fig. 3 is a flowchart illustrating an implementation of determining that the device is delayed to join the cluster in step 103 provided by the present application;
FIG. 4 is a flow chart of the calculation of the delay time in step 103 provided by the present application;
fig. 5 is a schematic structural diagram of the device provided in the present application.
Detailed Description
In order to avoid the pressure of smooth configuration, operation data and the like brought to a master Leader in a cluster by the cluster member state oscillation, the application provides a cluster member state oscillation prevention method. In order to make the present application clearer, the method provided by the present application is described below by way of the accompanying drawings and examples:
referring to fig. 1, fig. 1 is a flow chart of a method provided by the present application. The method is applied to the network equipment. For one embodiment, the network device may be a Controller running on a server, such as a Virtual application convergence fabric Controller (VCFC).
As shown in fig. 1, the process may include the following steps:
In a specific implementation, in this step 101, it is determined whether the specified storage medium records the device status information of the present device in many implementation forms, and the flow shown in fig. 2 below shows one implementation form by way of example. This is not repeated here and will be described in detail below.
It should be noted that, in the present application, the cluster may be implemented by a cluster tool such as a distributed assistance service (Zookeeper), and based on this, the specified storage medium herein may be a Zookeeper running on a server.
102, adding the cluster and recording the equipment state information of the equipment in a specified storage medium; the device state information of the device at least includes cluster member time, and the cluster member time is time when the device joins the cluster.
This step 102 is executed on the premise that it is determined that the specified storage medium does not record the device state information of the present device. Here, the specified storage medium does not record the device status information of the device, which means that the device has not joined the cluster for a long time before, so that even if the device directly joins the cluster immediately at this time, the device does not generate the status oscillation of the cluster member, and therefore, in the present application, when it is determined that the specified storage medium does not record the device status information of the device, as described in step 102, the device is directly joined the cluster.
It should be noted that, in this step 102, the cluster member time included in the device state information of the device may be system time currently joining the cluster.
As an embodiment, in the present application, the device state information of the device may further include a device identifier of the device, a state of the device in the cluster (specifically, a new cluster is added), and the like, and the present application is not limited in particular.
And 103, when determining that the equipment is delayed to be added into the cluster according to the cluster member time recorded in the equipment state information of the equipment, calculating delay time, and adding the equipment into the cluster after the delay time.
This step 103 is executed on the premise that it is judged that the storage medium is designated to record the device state information of the present device. Here, the specified storage medium records device status information of the device, which means that the device has joined the cluster before, and thus, if the device directly joins the cluster immediately at this time, a status oscillation of cluster members may occur.
As an embodiment, when it is determined that the device is delayed to join the cluster according to the cluster member time recorded in the device status information of the device, as described in step 103, the delay time is calculated, and the device is joined to the cluster after the delay time, where the purpose of joining the cluster after the delay time is to prevent the device from repeatedly joining the cluster and generating cluster member status oscillation. It should be noted that, in this application, in order to facilitate determining whether the cluster is subsequently added to the device to generate cluster member state oscillation, in step 103, adding to the cluster after the delay time further may include: and recording the time of the equipment joining the cluster as the time of the cluster member to the equipment state information of the equipment.
As another embodiment, in the present application, when it is determined that the device does not delay to join the cluster according to the cluster member time recorded in the device state information of the device, it indicates that although the device has joined the cluster before, it is possible that the device may join the cluster before very early, and even if the device directly joins the cluster immediately at this time, the device does not generate the cluster member state oscillation. It should be noted that, here, before the device directly joins the cluster, the device state information of the device may be further deleted from the designated storage medium, because the device state information of the device recorded in the designated storage medium at this time is not meaningful for whether the device joins the cluster subsequently or not to generate cluster member state oscillation, and therefore, the device state information is deleted. In addition, in order to facilitate determining whether the subsequent adding of the cluster by the device generates cluster member state oscillation, at this time, the device directly and immediately adds to the cluster, and further needs to re-record the device state information of the device in a specified storage medium, where the re-recorded device state information at least includes: and the cluster member time is the time (by a system time instance) when the device joins the cluster.
In specific implementation, in step 103, it is determined that there are many implementation forms for the device to join the cluster in a delayed manner according to the cluster member time recorded in the device state information of the device, and fig. 3 illustrates an implementation form. This is not repeated here and will be described in detail below.
In addition, there are many implementations of calculating the delay time in step 103, and fig. 4 illustrates one implementation. This is not repeated here and will be described in detail below.
Thus, the flow shown in fig. 1 is completed.
As can be seen from the process shown in fig. 1, in the present application, even if the network device meets the condition of joining the cluster, the network device does not join the cluster immediately, but first determines whether the specified storage medium records the device status information of the device, calculates the delay time when it is determined that the specified storage medium records the device status information of the device and the device is delayed to join the cluster according to the cluster member time recorded in the device status information of the device, and joins the cluster after the delay time, which obviously prevents the cluster member status from oscillating due to repeated joining and exiting of the cluster member, thereby relieving the pressure of the cluster member status oscillation on the smooth configuration and the running data of the master Leader in the cluster, and avoiding the influence on the normal service due to the cluster member status oscillation.
As an embodiment, in this step 101, determining whether the specified storage medium records the device status information of the present device may include a flow as shown in fig. 2.
Referring to fig. 2, fig. 2 is a flowchart of step 101 implementation provided in the present application. As shown in fig. 2, the process may include:
step 201, using the device identifier of the device as a key, checking whether the specified storage medium records the device status information using the key as an index, if not, executing step 202, and if so, executing step 203.
Here, the device identification of the present device is used to uniquely identify the present device. As an embodiment, in the present application, the device identifier of the present device may be an IP address of the present device.
In step 202, it is determined that the specified storage medium does not record the device status information of the device.
In step 203, it is determined that the specified storage medium records the device state information of the present device.
Thus, the flow shown in fig. 2 is completed.
How to judge whether the specified storage medium records the device status information of the present device is realized by the flow shown in fig. 2.
Referring to fig. 3, fig. 3 is a flowchart illustrating an implementation of determining that the device is delayed to join the cluster in step 103 provided by the present application. As shown in fig. 3, the process may include:
And step 302, if the D is smaller than a preset member state stable time threshold T, determining that the device is delayed to join the cluster.
As an embodiment, if D is greater than a preset member state stabilization time threshold T, it is determined that the device does not delay joining the cluster.
Here, the preset member state stabilization time threshold T is a time estimated on the premise that the cluster member state oscillation is not generated, for example, 30 minutes (min).
The flow shown in fig. 3 is completed.
Referring to fig. 4, fig. 4 is a flowchart for calculating the delay time in step 103 provided by the present application. As shown in fig. 4, the process may include:
And step 402, performing setting operation on the N to obtain delay time.
As an embodiment, the setting the N to obtain the delay time may include:
step a 1: multiplying N by the designated time T0 to obtain M1; carrying out squaring operation on the M1 to obtain M2; determining the M2 as the delay time.
The following equation 1 realizes step a 1:
square of delay time (N × T0) (formula 1)
T0 may be 1 minute or other value, and is not specifically limited in this application.
The step a1 is only an example of obtaining the delay time by performing the setting operation on N, and is not intended to limit the present application.
The flow shown in fig. 4 is completed.
The methods provided herein are described above. The following describes the apparatus provided in the present application:
referring to fig. 5, fig. 5 is a diagram illustrating a structure of the apparatus according to the present invention. The apparatus is applied to a network device, and as shown in fig. 5, the apparatus may include:
a judging unit, for judging whether the designated storage medium records the device status information of the device when the device satisfies the condition of joining the cluster,
the cluster processing unit is used for adding the cluster and recording the equipment state information of the equipment in a specified storage medium when the judgment result of the judgment unit is negative; the equipment state information of the equipment at least comprises cluster member time, wherein the cluster member time is the time when the equipment joins a cluster;
if the judgment result of the judgment unit is yes, if the equipment is determined to be delayed to join the cluster according to the cluster member time recorded in the equipment state information of the equipment, the delay time is calculated, and the equipment is joined to the cluster after the delay time.
As an embodiment, the determining, by the cluster processing unit, that the device joins the cluster in a delayed manner according to the cluster member time recorded in the device state information of the device includes:
calculating the difference D between the current system time and the cluster member time which is recorded recently in the equipment state information of the equipment;
and if the D is smaller than a preset member state stable time threshold T, determining that the equipment is delayed to join the cluster.
As an embodiment, the cluster processing unit calculating the delay time includes:
determining the number N of the recorded cluster member time in the equipment state information of the equipment;
and performing setting operation on the N to obtain delay time.
As an embodiment, the cluster processing unit joining the cluster after delaying the delay time further includes: recording the time of the equipment joining the cluster as the time of cluster members into the equipment state information of the equipment;
if the cluster processing unit determines that the device does not delay to join the cluster according to the cluster member time recorded in the device state information of the device when the judgment result of the judgment unit is yes, the cluster processing unit further deletes the device state information of the device from the specified storage medium; joining the cluster and re-recording the device state information of the device in a specified storage medium, wherein the re-recorded device state information of the device at least comprises: and the cluster member time is the time when the equipment joins the cluster.
Thus, the apparatus structure diagram provided in the present application is completed.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (8)
1. A cluster member state oscillation prevention method is applied to network equipment and comprises the following steps:
when the device meets the condition of joining the cluster, firstly judging whether the appointed storage medium records the device state information of the device,
if not, adding the cluster and recording the equipment state information of the equipment in a specified storage medium; the equipment state information of the equipment at least comprises cluster member time, wherein the cluster member time is the time when the equipment joins a cluster;
if yes, calculating the difference D between the current system time and the cluster member time which is recorded recently in the equipment state information of the equipment; and if the D is smaller than a preset member state stable time threshold T, determining that the equipment is delayed to join the cluster, calculating the delay time according to the number N of the recorded cluster member time in the equipment state information of the equipment, and joining the cluster after the delay time.
2. The method according to claim 1, wherein the calculating the delay time according to the number N of the cluster member times recorded in the device status information of the device comprises:
determining the number N of the recorded cluster member time in the equipment state information of the equipment;
and performing setting operation on the N to obtain delay time.
3. The method of claim 2, wherein the setting the N to obtain the delay time comprises:
multiplying N by the designated time T0 to obtain M1;
carrying out squaring operation on the M1 to obtain M2;
determining the M2 as the delay time.
4. The method of claim 1, wherein joining the cluster after the delay time further comprises:
and recording the time of the equipment joining the cluster as the time of the cluster member to the equipment state information of the equipment.
5. The method according to claim 1, wherein after determining that the device status information of the device is recorded in the designated storage medium, if it is determined that the device does not delay joining the cluster according to the cluster member time recorded in the device status information of the device, the method further comprises:
deleting the device state information of the device from the specified storage medium;
joining the cluster and re-recording the device state information of the device in a specified storage medium, wherein the re-recorded device state information of the device at least comprises: and the cluster member time is the time when the equipment joins the cluster.
6. An apparatus for preventing oscillation of cluster member status, the apparatus being applied to a network device, comprising:
a judging unit, for judging whether the designated storage medium records the device status information of the device when the device satisfies the condition of joining the cluster,
the cluster processing unit is used for adding the cluster and recording the equipment state information of the equipment in a specified storage medium when the judgment result of the judgment unit is negative; the equipment state information of the equipment at least comprises cluster member time, wherein the cluster member time is the time when the equipment joins a cluster;
when the judgment result of the judgment unit is yes, calculating the difference D between the current system time and the cluster member time which is recorded recently in the equipment state information of the equipment; and if the D is smaller than a preset member state stable time threshold T, determining that the equipment is delayed to join the cluster, calculating the delay time according to the number N of the recorded cluster member time in the equipment state information of the equipment, and joining the cluster after the delay time.
7. The apparatus of claim 6, wherein the cluster processing unit calculates the delay time according to the number N of the cluster member times recorded in the device status information of the device comprises:
determining the number N of the recorded cluster member time in the equipment state information of the equipment;
and performing setting operation on the N to obtain delay time.
8. The apparatus of claim 6, wherein the cluster processing unit to join the cluster after the delay time further comprises: recording the time of the equipment joining the cluster as the time of cluster members into the equipment state information of the equipment;
if the cluster processing unit determines that the device does not delay to join the cluster according to the cluster member time recorded in the device state information of the device when the judgment result of the judgment unit is yes, the cluster processing unit further deletes the device state information of the device from the specified storage medium; joining the cluster and re-recording the device state information of the device in a specified storage medium, wherein the re-recorded device state information of the device at least comprises: and the cluster member time is the time when the equipment joins the cluster.
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Effective date of registration: 20230607 Address after: 310052 11th Floor, 466 Changhe Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: H3C INFORMATION TECHNOLOGY Co.,Ltd. Address before: 310052 Changhe Road, Binjiang District, Hangzhou, Zhejiang Province, No. 466 Patentee before: NEW H3C TECHNOLOGIES Co.,Ltd. |