CN111770159B - Service discovery system, method, first server and storage medium - Google Patents
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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
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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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
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
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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
- H04L67/50—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
Abstract
The application provides a service discovery system, a service discovery method, a first server and a storage medium, and relates to the technical field of container arrangement. The service discovery system comprises a first server and a second server, wherein a first application and a second application are preset in the first server, and a second application is preset in the second server; the second application is allocated a unified entry address; the first server is used for detecting whether the second application preset in the first server is abnormal or not when the first application accesses the second application through the preset domain name; the first server is further configured to access, if abnormal, a second application preset in the second server through the unified entry address.
Description
Technical Field
The present application relates to the field of container arrangement technology, and in particular, to a service discovery system, a service discovery method, a first server, and a storage medium.
Background
At present, with the development of technologies in the container arrangement field and the increasingly strong demands of services on disaster recovery and the convenience requirement on multi-cluster management, application deployment is recommended by more and more cloud providers in a federal mode, and the increasingly strong demands of cross-cluster service discovery are not yet achieved.
In the current private cloud Kubernetes federal cluster mode, a cross-cluster service discovery mechanism which can be flexibly and automatically is lacking. The federation clusters are generally managed separately, the internally deployed service is used as an independent application to provide service to the outside, the internal information of the system is performed by referring to an information interaction mode among the systems, the authority of calling federation brother clusters or self clusters is determined by a request initiator, and the application is tightly coupled with an infrastructure.
Disclosure of Invention
The present application aims to overcome the above-mentioned drawbacks of the prior art, and provides a service discovery system, a method, a first server and a storage medium, so as to implement a cross-cluster service discovery method.
In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows:
in a first aspect, an embodiment of the present application provides a service discovery system, where the system includes a first server and a second server, where a first application and a second application are preset in the first server, and a second application is preset in the second server; the second application is allocated a unified entry address;
the first server is used for detecting whether the second application preset in the first server is abnormal or not when the first application accesses the second application through the preset domain name;
the first server is further used for accessing a second application preset in the second server through the unified entry address if the first application is abnormal.
In one embodiment, the first server is further configured to,
if the first application is not abnormal, accessing a second application preset in the first server through the unified entry address.
In one embodiment, the second application preset in the first server and the second application preset in the second server each start at least two copies, each copy corresponds to a different IP address, and the different IP addresses are accessed through a unified portal address.
In one embodiment, the first server and the second server communicate via a software-defined network SDN.
In one embodiment, the first server and the second server are both Kubernetes federal cluster servers.
In a second aspect, an embodiment of the present application provides a service discovery method, applied to a first server, where the method includes:
when the first application accesses the second application through a preset domain name, detecting whether the second application preset in the first server is abnormal or not; the first server is preset with a first application and a second application;
if the first application is abnormal, accessing a preset second application in a second server through the unified entry address, wherein the second application is preset in the second server; the preset second application in the first server and the second server is allocated with a unified entry address.
In one embodiment, the method further comprises:
if the first application is not abnormal, accessing a second application preset in the first server through the unified entry address.
In a third aspect, an embodiment of the present application provides a first server, including:
the detection module is used for detecting whether the second application preset in the first server is abnormal or not when the first application accesses the second application through the preset domain name; the first server is preset with a first application and a second application;
the first access module is used for accessing a second application preset in a second server through a unified entry address if the first access module is abnormal, wherein the second application is preset in the second server; the preset second application in the first server and the second server is allocated with a unified entry address.
In one embodiment, the first server further comprises:
and the second access module is used for accessing a second application preset in the first server through the unified entry address if the second application is not abnormal.
In a fourth aspect, an embodiment of the present application provides a first server, including: the server comprises a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, and when the first server operates, the processor communicates with the storage medium through the bus, and the processor executes the machine-readable instructions to perform the steps of the service discovery method described in the second aspect.
In a fifth aspect, an embodiment of the present application provides a computer readable storage medium, where a computer program is stored on the computer readable storage medium, the computer program when executed by a processor performs the steps of the service discovery method described in the second aspect.
The application mainly solves the problems of service registration and discovery among the Kubernetes federation clusters and brother clusters which are autonomously constructed in the private cloud environment at present. At present, each cloud manufacturer provides the federal cluster service as an independent application service, namely, uses federal mode to perform unified deployment and management of the application, but is relatively independent in terms of providing the service externally. The cluster service discovery method can complete the service discovery and registration work of the Kubernetes federal cluster under the condition that a user does not feel, and brings great convenience to the user; meanwhile, the configuration and operation cost of the Kubernetes cluster is greatly saved. 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 embodiments of the disclosure.
Further, not all of the effects described above need be achieved in any of the embodiments of the present specification.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a service discovery system provided by an embodiment of the present disclosure;
FIG. 2 is a block diagram of a service discovery system provided by an embodiment of the present disclosure;
FIG. 3 is a flowchart of a service discovery method provided by an embodiment of the present disclosure;
fig. 4 is a block diagram of a first server according to an embodiment of the present disclosure;
fig. 5 is a block diagram of a first server according to an embodiment of the present disclosure;
fig. 6 is a block diagram of a first server according to an embodiment of the present disclosure.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application.
Fig. 1 is a block diagram of a service discovery system provided by an embodiment of the disclosure, where the service discovery system shown in fig. 1 includes a first server (cluster 2 in fig. 1) and a second server (cluster 1 in fig. 1), where cluster1 and cluster2 are Kubernetes clusters, a CalicoBGP network is used inside the clusters, kubernetes federal clusters are formed by cluster1 and cluster2, sibling clusters are connected by using an SDN network, and a Fedcontroller (federal cluster management control panel) and a DNS service deployed in cluster1 are deployed simultaneously in cluster1 and cluster2 (only DNS services in cluster2 are used herein for illustration).
In this embodiment, the first server and the second server may be located at different places, and belong to different data centers, for example, the first server is located in a Shanghai data center, the second server is located in a Beijing data center, and an SDN network is used in each data center, so that the Callico routing table in cluster1 and cluster2 can be learned, and therefore, the PODs in cluster1 and cluster2 can directly communicate through PODIP.
The federal application deployed by the application B at the same time in cluster1 and cluster2, for example, may start two copies at the same time in cluster1 and cluster2, assign IP addresses 192.168.91.13 and 192.168.90.11 to cluster1, assign IP addresses 192.167.88.11 and 192.167.89.11 to cluster2, and assign IP address 192.167.88.18 to application a, which is a requestor of the calling application B deployed by cluster 2; the particular activation of one or more copies is determined by the particular circumstances, which is not limiting to the present disclosure.
If the KubeController in the cluster2 detects that the application B of the cluster has allocated an IP address, then the application B in the cluster allocates a unified entry address 10.97.12.12, and at this time, the rear end addresses of 10.97.12.12 are 192.167.88.11 and 192.167.89.11, and DNS service is configured to resolve the serverb.nsb domain name to 10.97.12.12;
and if the FedController in the cluster1 detects that the application B in the cluster1 and the cluster2 are allocated with the IP addresses, and meanwhile, the cluster2 is allocated with the unified entry address for the application B and is configured with the DNS resolution service, adding two IP addresses of the application B in the cluster1 to a rear end address list of the unified entry address of the application B in the cluster2, wherein the rear end addresses of 10.97.12.12 are 192.167.88.11, 192.167.89.11, 192.168.90.11 and 192.168.91.13.
The application A accesses the application B through a domain name serverB.nsB, the DNS service resolves the domain name into 10.97.12.12, the flow passes 10.97.12.12 and is transferred to an application B container of the cluster1, and the IP addresses are 192.168.90.11 and 192.168.91.13, so that cross-cluster service discovery of the federal application is realized;
through 10.97.12.12, the application B of the cluster2 which is forwarded preferentially forwards the application B of the cluster1 with the flow forwarding value when the application B in the cluster2 is abnormal or the request is in a blocking state;
the Calico network scheme may be replaced with a flannel network scheme, and the present disclosure is not limited.
The SDN network scheme may be replaced by a scheme that uses manually configured three-tier network devices.
The main components of Calico are:
felix: the califogent runs on each workload node and is mainly responsible for configuring information such as routes and ACLs and the like so as to ensure the communication state of the endpoint;
etcd: the distributed kv storage is mainly responsible for the consistency of network metadata and ensures the accuracy of the Calico network state;
BGPClient (BIRD): the method is mainly responsible for distributing routing information written in kernel by Felix to the current Calico network, so as to ensure the effectiveness of communication between works load;
BGPRouteReflector (BIRD): in large-scale deployment, unlike mesh mode where all nodes are interconnected, centralized route distribution is accomplished through one or more bgpriotereflectors.
Kubernetes (commonly referred to as K8 s) is an open source container cluster management system from the Google cloud platform for automatically deploying, expanding, and managing containerized applications. The system constructs a scheduling service of a container based on the Docker, and the Kubernetes can automatically select a working container from a container cluster for use, which is not described herein.
Fig. 2 is a block diagram of a service discovery system according to an embodiment of the present application, where a server processing system shown in fig. 2 includes a first server 201 and a second server 202, where a first application and a second application are preset in the first server 201, and a second application is preset in the second server 202; the second application is allocated a unified entry address;
a first server 201, configured to detect, when a first application accesses a second application through a preset domain name, whether the second application preset in the first server is abnormal;
the first server 201 is further configured to access, if abnormal, a second application preset in the second server 202 through the unified entry address.
Optionally, the first server 201 is further configured to,
if the first application is not abnormal, accessing a second application preset in the first server through the unified entry address.
Optionally, the second application preset in the first server 201 and the second application preset in the second server 202 each start at least two copies, each copy corresponds to a different IP address, and the different IP addresses are accessed through a unified portal address.
Of course, one copy or multiple copies may be provided, and the disclosure is illustrative only and not limited to the number of copies.
Optionally, the first server 201 and the second server 202 communicate with each other through a software-defined network SDN.
Optionally, the first server 201 and the second server 202 are both Kubernetes federation cluster servers.
Fig. 3 is a flowchart of a service discovery method according to an embodiment of the present application, which is applied to a first server, where the service discovery method shown in fig. 3 includes:
step 301, detecting whether a second application preset in a first server is abnormal or not when the first application accesses the second application through a preset domain name;
the first server is preset with a first application and a second application;
step 302, if abnormal, accessing a second application preset in a second server through a unified entry address;
a second application is preset in the second server; the preset second application in the first server and the second server is allocated with a unified entry address.
Optionally, the method further comprises:
and 303, if the first application is not abnormal, accessing the second application preset in the first server through the unified entry address.
Fig. 4 is a block diagram of a first server according to an embodiment of the present application, where the first server 40 shown in fig. 4 includes:
a detection module 401, configured to detect, when a first application accesses a second application through a preset domain name, whether the second application preset in the first server is abnormal; the first server is preset with a first application and a second application;
the first access module 402 is configured to access, if abnormal, a second application preset in a second server through a unified entry address, where the second application is preset in the second server; the preset second application in the first server and the second server is allocated with a unified entry address.
Fig. 5 is a block diagram of a first server according to an embodiment of the present application, where the first server 40 shown in fig. 5 further includes:
and the second access module 403 is configured to access a second application preset in the first server through the unified entry address if the second application is not abnormal.
The above modules may be one or more integrated circuits configured to implement the above methods, for example: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, when a module is implemented in the form of a processing element scheduler code, the processing element may be a general purpose processor, such as a Central Processing Unit (CPU) or other processor that may invoke the program code. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Fig. 6 is a block diagram of a first server according to an embodiment of the present application, where the first server shown in fig. 6 includes: a processor 601, a storage medium 602, and a bus 603, wherein:
the first server may include one or more processors 601, a bus 603, and a storage medium 602, where the storage medium 602 is used to store a program, the processor 601 is communicatively connected to the storage medium 602 through the bus 603, and the processor 601 invokes the program stored in the storage medium 602 to perform the above-described method embodiments.
It is noted that processor 601 may include one or more processing cores (e.g., a single-core processor or a multi-core processor). By way of example only, the processor may include a central processing unit (CentralProcessingUnit, CPU), an application specific integrated circuit (ApplicationSpecificIntegratedCircuit, ASIC), an application specific instruction set processor (ASIP), a graphics processing unit (GraphicsProcessingUnit, GPU), a physical processing unit (PhysicsProcessingUnit, PPU), a digital signal processor (DigitalSignalProcessor, DSP), a field programmable gate array (FieldProgrammableGateArray, FPGA), a programmable logic device (ProgrammableLogicDevice, PLD), a controller, a microcontroller unit, a reduced instruction set computer (ReducedInstructionSetComputing, RISC), a microprocessor, or the like, or any combination thereof.
The storage medium 602 may include: including mass storage, removable storage, volatile Read-write memory, or Read-only memory (ROM), or the like, or any combination thereof. By way of example, mass storage may include magnetic disks, optical disks, solid state drives, and the like; removable memory may include flash drives, floppy disks, optical disks, memory cards, zip disks, magnetic tape, and the like; the volatile read-write memory may include random access memory (RandomAccessMemory, RAM); the RAM may include dynamic RAM (DynamicRandomAccessMemory, DRAM), double data rate synchronous dynamic RAM (double date-RateSynchronousRAM, DDRSDRAM); static RAM (static random-AccessMemory, SRAM), thyristor RAM (T-RAM), zero-capacitor RAM (Zero-RAM), and the like. By way of example, ROM may include mask ROM (MaskRead-OnlyMemory, MROM), programmable ROM (Programmable Read-OnlyMemory, PROM), erasable programmable ROM (PEROM), electrically erasable programmable ROM (ElectricallyErasableProgrammablereadonlymemory, EEPROM), compact disk ROM (CD-ROM), and digital versatile disk ROM, among others.
For ease of illustration, only one processor 601 is depicted in the first server. It should be noted, however, that the first server in the present application may also include a plurality of processors 601, and thus the steps performed by one processor described in the present application may also be performed by a plurality of processors in combination or separately. For example, if the processor 601 of the first server performs the steps a and B, it should be understood that the steps a and B may be performed by two different processors together or performed separately in one processor. For example, the first processor performs step a, the second processor performs step B, or the first processor and the second processor together perform steps a and B.
Optionally, the present application also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of a service discovery method as described above.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (english: processor) to perform some of the steps of the methods according to the embodiments of the application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, etc. which can store program codes.
Claims (6)
1. The service discovery system is characterized by comprising a first server and a second server, wherein a first application and a second application are preset in the first server, and a second application is preset in the second server; the second application is allocated a unified entry address;
the method comprises the steps that a second application preset in a first server and a second application preset in a second server start at least two copies, each copy corresponds to a different IP address, and the different IP addresses are accessed through a unified entry address;
the first server is used for detecting whether the second application preset in the first server is abnormal or not when the first application accesses the second application through the preset domain name;
the first server is further used for accessing a second application preset in the second server through the unified entry address if the first application is abnormal; if the unified entry address is not abnormal, accessing a second application preset in the first server through the unified entry address;
the first server and the second server are both Kubernetes federation cluster servers.
2. The system of claim 1, wherein the first server and the second server communicate via a software-defined network SDN.
3. A service discovery method applied to a first server, the method comprising:
when the first application accesses the second application through a preset domain name, detecting whether the second application preset in the first server is abnormal or not; the first server is preset with a first application and a second application;
the method comprises the steps that a second application preset in a first server and a second application preset in a second server start at least two copies, each copy corresponds to a different IP address, and the different IP addresses are accessed through a unified entry address;
if the first application is abnormal, accessing a preset second application in a second server through the unified entry address, wherein the second application is preset in the second server; a second application preset in the first server and the second server is allocated with a unified entry address; if the unified entry address is not abnormal, accessing a second application preset in the first server through the unified entry address;
the first server and the second server are both Kubernetes federation cluster servers.
4. A first server, the first server comprising:
the detection module is used for detecting whether the second application preset in the first server is abnormal or not when the first application accesses the second application through the preset domain name; the first server is preset with a first application and a second application; a second application is preset in the second server; the second application is allocated a unified entry address;
the method comprises the steps that a second application preset in a first server and a second application preset in a second server start at least two copies, each copy corresponds to a different IP address, and the different IP addresses are accessed through a unified entry address;
the first access module is used for accessing a second application preset in a second server through a unified entry address if the first access module is abnormal, wherein the second application is preset in the second server; a second application preset in the first server and the second server is allocated with a unified entry address;
the second access module is used for accessing a second application preset in the first server through the unified entry address if the second application is not abnormal;
the first server and the second server are both Kubernetes federation cluster servers.
5. A first server, comprising: a processor, a storage medium, and a bus, the storage medium storing machine-readable instructions executable by the processor, the processor in communication with the storage medium via the bus when the first server is running, the processor executing the machine-readable instructions to perform the steps of the service discovery method of claim 3.
6. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the service discovery method of claim 3.
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| CN113965546A (en) * | 2021-09-10 | 2022-01-21 | 济南浪潮数据技术有限公司 | Method for setting tenant special DNS server for application by container cloud platform |
| CN114025021B (en) * | 2021-11-18 | 2023-08-08 | 上海道客网络科技有限公司 | Communication method, system, medium and electronic equipment crossing Kubernetes cluster |
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