CN113132154B - eBPF technology-based containerized application smooth upgrading method and system - Google Patents
eBPF technology-based containerized application smooth upgrading method and system Download PDFInfo
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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
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
- H04L41/082—Configuration setting characterised by the conditions triggering a change of settings the condition being updates or upgrades of network functionality
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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
- H04L41/0893—Assignment of logical groups to network elements
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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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- H04L67/141—Setup of application sessions
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Abstract
The invention discloses a containerization application smooth upgrading method and a system based on eBPF technology, wherein an eBPF filter and a shunting submodule are embedded in a system kernel of equipment to be upgraded; receiving a software upgrading packet issued by an application deployment subsystem; creating a new container according to the software upgrading package, and installing the software upgrading package in the new container; receiving an application upgrading instruction issued by an application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by an eBPF filter; the application upgrading instruction comprises a virtual network card address of the new container; and receiving a client request, inquiring eBPFmap by the shunting submodule, and guiding a new UDP request and a new TCP connection to a new container application according to the virtual network card address of the new container. That is, the invention can realize the smooth upgrade of the container application in the single machine environment without the port multiplexing logic, the upgrade is relatively simple, and the security of the private data of the client can be protected.
Description
Technical Field
The invention relates to the technical field of containerization application, in particular to a smooth upgrading method and a smooth upgrading system for containerization application based on eBPF technology.
Background
A complete CDN operation requires installing various application software in numerous CDN node machines, such as a cache related to a cache, a DNS scheduler related to traffic scheduling, and an Agent application related to traffic log collection, and in short, in order to make after-sales service for a CDN customer, application software related to various services needs to be installed in numerous devices.
In the operation process, the client needs to continuously update and iterate, so that the application software in the CDN node machine inevitably needs to be upgraded, and how to smoothly upgrade the application software in a large number of CDN node machines under the condition of ensuring uninterrupted service of the CDN node is a great challenge.
As is known, the conventional application program upgrade needs to perform port multiplexing, that is, monitor the same port through multiple processes, and this way will not affect other programs or processes occupying this port. Before a docker container appears, the port multiplexing technology can realize a perfect upgrading process of application programs in a machine, but the port multiplexing method has the disadvantage that all installed application programs can be realized only by realizing the set of logic, and is relatively complex.
In recent years, with the development of cloud computing, cloud service and edge computing, the Docker container technology has been widely applied, kubernets has gained more and more attention as an advanced container arrangement management technology, and various internet manufacturers have successively introduced public cloud container service based on kubernets. In a public cloud scene of containerization deployment based on Kubernetes, perfect upgrading of port multiplexing needs to be achieved in the same machine, and the network is not isolated. In view of this, the present application is specifically proposed.
Disclosure of Invention
The invention provides a containerization application smooth upgrading method and system based on eBPF technology aiming at the defects of the prior art, thereby solving the problems that the prior containerization-free single-machine application upgrading needs to realize port multiplexing logic and is relatively complex; and in the case of single-machine application upgrading with a container, in a public cloud scene, upgrading by adopting a port multiplexing method requires that networks are not isolated, so that the safety problem of leakage of private data of client application can be caused.
The invention provides a containerization application smooth upgrading method based on an eBPF technology, which comprises the following steps:
an eBPF filter and a shunting submodule are embedded in a system kernel of the equipment to be upgraded;
receiving a software upgrading package issued by an application deployment subsystem;
creating a new container according to the software upgrading package, and installing the software upgrading package in the new container;
receiving an application upgrading instruction issued by the application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by the eBPF filter; the application upgrading instruction comprises a virtual network card address of the new container;
and receiving a client request, inquiring eBPFmap by the shunting submodule, and guiding a new UDP request and a new TCP connection to a new container application according to the virtual network card address of the new container.
On the other hand, the invention also provides a containerized application smooth upgrading method based on the eBPF technology, which comprises the following steps:
the application deployment subsystem issues a software upgrading package to the equipment to be upgraded so that the equipment to be upgraded creates a new container based on the software upgrading package, and meanwhile, the software upgrading package is installed in the new container;
issuing an application upgrading instruction to the equipment to be upgraded so that an eBPF filter in the equipment to be upgraded records the application upgrading instruction into an eBPFmap; the application upgrading instruction comprises the virtual network card address of the new container.
In yet another aspect, a system for smoothly upgrading containerized applications based on eBPF technology, the system comprising: the device to be upgraded and the application deployment subsystem;
the equipment to be upgraded is used for embedding an eBPF filter and a shunting submodule into a system kernel of the equipment to be upgraded; receiving a software upgrading packet issued by an application deployment subsystem; creating a new container according to the software upgrading package, and installing the software upgrading package in the new container; receiving an application upgrading instruction issued by the application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by the eBPF filter; the application upgrading instruction comprises a virtual network card address of the new container; receiving a client request, inquiring eBPFmap by the shunting submodule, and guiding a new UDP request and a new TCP connection to a new container for application according to the virtual network card address of the new container;
the application deployment subsystem is used for issuing a software upgrading package to the equipment to be upgraded so as to create a new container by the equipment to be upgraded based on the software upgrading package and simultaneously installing the software upgrading package in the new container; issuing an application upgrading instruction to the equipment to be upgraded so that an eBPF filter in the equipment to be upgraded records the application upgrading instruction into an eBPFmap; the application upgrading instruction comprises the virtual network card address of the new container.
By adopting the technical scheme, the invention can obtain the following technical effects: compared with the prior art, the eBPF filter and the shunting submodule are embedded in the kernel of the equipment system to be upgraded; receiving a software upgrading packet issued by an application deployment subsystem; creating a new container according to the software upgrading package, and installing the software upgrading package in the new container; receiving an application upgrading instruction issued by the application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by the eBPF filter; the application upgrading instruction comprises a virtual network card address of the new container; and receiving a client request, inquiring eBPFmap by the shunting submodule, and guiding a new UDP request and a new TCP connection to a new container according to the virtual network card address of the new container for application. That is to say, the invention can realize the smooth upgrade of the container application under the single machine environment of the equipment without port multiplexing logic, the upgrade is relatively simple, and the security of the private data of the client can be protected.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating a method for smoothly upgrading a containerized application based on eBPF technology according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for smoothly upgrading a containerized application based on eBPF technology in FIG. 1;
FIG. 3 is an interactive schematic diagram illustrating a containerization application smooth upgrade method based on eBPF technology in FIGS. 1 and 2;
fig. 4 is a schematic structural diagram illustrating a containerization application smooth upgrade system based on eBPF technology in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example one
As shown in fig. 1, an embodiment of the present invention provides a method for smoothly upgrading a containerized application based on an eBPF technology, including:
step 101: and an eBPF filter and a shunting submodule are embedded in a system kernel of the equipment to be upgraded.
Step 102: and receiving a software upgrading package issued by the application deployment subsystem.
Step 103: and creating a new container according to the software upgrading package, and installing the software upgrading package in the new container.
Step 104: receiving an application upgrading instruction issued by the application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by the eBPF filter; and the application upgrading instruction comprises the virtual network card address of the new container.
Step 105: and receiving a client request, inquiring eBPFmap by the shunting submodule, and guiding a new UDP request and a new TCP connection to a new container application according to the virtual network card address of the new container.
That is to say, the invention can realize the smooth upgrade of the container application under the single machine environment of the equipment without port multiplexing logic, the upgrade is relatively simple, and the security of the private data of the client can be protected. The protection of the data security mainly means that a brand new container is added, the container is a completely isolated sandbox environment and is completely isolated from application software of other clients on the same machine through a network, and the application data security of the clients can be protected through the network isolation.
The device to be upgraded comprises a physical network card, a network card driving XDP module and an eBPF filter.
Correspondingly, step 101 may be specifically executed to embed an eBPF filter in the TC layer of the system kernel of the device to be upgraded, and set a shunting submodule in the network card driver XDP module of the system kernel of the device to be upgraded.
It should be noted that the eBPF originates from bpf (Berkeley Packet Filter), which is a network Filter designed to capture and Filter network packets meeting a specific rule, and the Filter is a program running on a register.
Further, in one example, the method may further comprise:
and receiving a client request, inquiring eBPFmap by the shunting submodule, guiding a new UDP request and a new TCP connection to a new container according to the virtual network card address of the new container, and simultaneously keeping the original TCP connection.
For example, when a client sends an application request to a device to be upgraded, a shunting submodule in the device to be upgraded queries eBPFmap according to the application request of the client, guides a new UDP request and a new TCP connection in the application request to a new container application according to a query result of the eBPFmap, and simultaneously reserves an original TCP connection.
Specifically, the step of reserving the original TCP connection specifically includes: and the equipment to be upgraded is set to be disconnected in time-out of the original TCP connection.
It should be noted that, since the TCP connection is connection-oriented, if the TCP connection is kept unchanged, the TCP connection is disconnected after 5 minutes; while new TCP requests are directed to new containers. While UDP requests are connectionless oriented, they can be directed to the new container.
Example two
Based on the same inventive concept in the embodiment of the present invention, as shown in fig. 2, the application deployment subsystem is taken as a main body, and a second embodiment of the present invention provides a containerization application smooth upgrade method based on the eBPF technology, where the method may further include:
step 201: and the application deployment subsystem issues a software upgrading package to the equipment to be upgraded so that the equipment to be upgraded creates a new container based on the software upgrading package, and meanwhile, the software upgrading package is installed in the new container.
Step 202: issuing an application upgrading instruction to the equipment to be upgraded so that an eBPF filter in the equipment to be upgraded records the application upgrading instruction into an eBPFmap; the application upgrading instruction comprises the virtual network card address of the new container.
Further, as shown in fig. 3, the technical solution of the present invention is described in detail with a client, a device to be upgraded, and an application deployment subsystem as an interaction subject.
Step S1: and an eBPF filter and a shunting submodule are embedded in a system kernel of the equipment to be upgraded.
Step S2: and the application deployment subsystem transmits the software upgrading package to the equipment to be upgraded.
And step S3: and the equipment to be upgraded receives a software upgrading package issued by the application deployment subsystem, creates a new container according to the software upgrading package, and installs the software upgrading package in the new container.
And step S4: the application deployment subsystem issues an application upgrading instruction to the equipment to be upgraded; the application upgrading instruction comprises the virtual network card address of the new container.
Step S5: and the equipment to be upgraded receives an application upgrading instruction issued by the application deployment subsystem, and the eBPF filter records the application upgrading instruction into the eBPFmap.
Step S6: and the equipment to be upgraded receives the client request, the shunting submodule queries the eBPFmap, and the new UDP request and the new TCP connection are guided to the new container application according to the virtual network card address of the new container.
Specifically, a client request is received, the offload submodule queries the eBPFmap, and the new UDP request and the new TCP connection are guided to the new container application according to the virtual network card address of the new container, while the original TCP connection is retained.
Further, in another example, as shown in fig. 4, an embodiment of the present invention further provides a system for smoothly upgrading a containerized application based on eBPF technology, where the system includes: the device to be upgraded and the application deployment subsystem;
the equipment to be upgraded can be used for embedding an eBPF filter and a shunting submodule into a system kernel of the equipment to be upgraded; receiving a software upgrading packet issued by an application deployment subsystem; creating a new container according to the software upgrading package, and installing the software upgrading package in the new container; receiving an application upgrading instruction issued by the application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by the eBPF filter; the application upgrading instruction comprises a virtual network card address of the new container; and receiving a client request, inquiring eBPFmap by the shunting submodule, and guiding a new UDP request and a new TCP connection to a new container application according to the virtual network card address of the new container.
The application deployment subsystem can be used for issuing a software upgrading package to the equipment to be upgraded so as to create a new container by the equipment to be upgraded based on the software upgrading package and install the software upgrading package in the new container; issuing an application upgrading instruction to the equipment to be upgraded so that an eBPF filter in the equipment to be upgraded records the application upgrading instruction into an eBPFmap; the application upgrading instruction comprises the virtual network card address of the new container.
According to the method, an eBPF filter and a shunting submodule are embedded in a system kernel of the equipment to be upgraded; receiving a software upgrading package issued by an application deployment subsystem; creating a new container according to the software upgrading package, and installing the software upgrading package in the new container; receiving an application upgrading instruction issued by the application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by the eBPF filter; the application upgrading instruction comprises a virtual network card address of the new container; and receiving a client request, inquiring eBPFmap by the shunting submodule, and guiding a new UDP request and a new TCP connection to a new container application according to the virtual network card address of the new container. That is to say, the invention can realize the smooth upgrade of the container application under the single machine environment of the equipment without port multiplexing logic, the upgrade is relatively simple, and the security of the private data of the client can be protected.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
1. A containerization application smooth upgrading method based on an eBPF technology is characterized by comprising the following steps:
an eBPF filter and a shunting submodule are embedded in a system kernel of the equipment to be upgraded;
receiving a software upgrading package issued by an application deployment subsystem;
creating a new container according to the software upgrading package, and installing the software upgrading package in the new container;
receiving an application upgrading instruction issued by the application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by the eBPF filter; the application upgrading instruction comprises a virtual network card address of the new container;
receiving a client request, inquiring eBPFmap by the shunting submodule, guiding a new UDP request and a new TCP connection to a new container application according to the virtual network card address of the new container, and simultaneously keeping the original TCP connection;
the step of reserving the original TCP connection specifically comprises the following steps:
and the equipment to be upgraded is set to be disconnected in time-out of the original TCP connection.
2. The method of claim 1, wherein the device to be upgraded comprises a physical network card, a network card driver XDP module, and an eBPF filter.
3. The method of claim 2, wherein the device system kernel to be upgraded has embedded eBPF filter and offload sub-module, and specifically comprises:
and an eBPF filter is embedded in the TC layer of the system kernel of the equipment to be upgraded, and a shunting submodule is arranged in the network card driver XDP module.
4. A containerized application smooth upgrading method based on an eBPF technology is characterized by comprising the following steps:
the application deployment subsystem issues a software upgrading package to the equipment to be upgraded so that the equipment to be upgraded creates a new container based on the software upgrading package, and meanwhile, the software upgrading package is installed in the new container;
issuing an application upgrading instruction to the equipment to be upgraded so that an eBPF filter in the equipment to be upgraded records the application upgrading instruction into an eBPFmap; the application upgrading instruction comprises a virtual network card address of the new container;
the method further comprises the following steps:
the equipment to be upgraded receives a client request, wherein an eBPF filter and a shunting submodule are embedded in a system kernel of the equipment to be upgraded, an eBPFmap is inquired by the shunting submodule in the equipment to be upgraded, a new UDP request and a new TCP connection are guided to a new container to be applied according to a virtual network card address of the new container, and an original TCP connection is reserved;
the step of reserving the original TCP connection specifically includes:
and the equipment to be upgraded is set to be disconnected in time-out of the original TCP connection.
5. A system for smoothly upgrading containerized applications based on eBPF technology, comprising: the device to be upgraded and the application deployment subsystem;
the device to be upgraded is used for embedding an eBPF filter and a shunting submodule into a system kernel of the device to be upgraded; receiving a software upgrading package issued by an application deployment subsystem; creating a new container according to the software upgrading package, and installing the software upgrading package in the new container; receiving an application upgrading instruction issued by the application deployment subsystem, and recording the application upgrading instruction into an eBPFmap by the eBPF filter; the application upgrading instruction comprises a virtual network card address of the new container; receiving a client request, inquiring eBPFmap by the shunting submodule, guiding a new UDP request and a new TCP connection to a new container application according to the virtual network card address of the new container, and simultaneously keeping the original TCP connection;
the step of reserving the original TCP connection specifically comprises the following steps:
the equipment to be upgraded is set to be disconnected in the overtime of the original TCP connection;
the application deployment subsystem is used for issuing a software upgrading package to the equipment to be upgraded so as to create a new container by the equipment to be upgraded based on the software upgrading package and simultaneously installing the software upgrading package in the new container; issuing an application upgrading instruction to the equipment to be upgraded so that an eBPF filter in the equipment to be upgraded records the application upgrading instruction into an eBPFmap; and the application upgrading instruction comprises the virtual network card address of the new container.
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| CN114039875B (en) * | 2021-10-30 | 2023-09-01 | 北京网聚云联科技有限公司 | Data acquisition method, device and system based on eBPF technology |
| CN114401245B (en) * | 2021-12-22 | 2024-03-22 | 上海网基科技有限公司 | Method, device, computer equipment and storage medium for realizing high-performance DNS service |
| CN118467012A (en) * | 2024-07-15 | 2024-08-09 | 天翼云科技有限公司 | Smooth upgrading method and device for containerized real-time audio and video distribution background |
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