A way for kubernetes to expose pod services to the outside world

Abstract

The invention discloses a kubernetes externally exposed Pod service method, including a kubernetes cluster, a service exposure controller, an elastic IP manager, and a Pod IP drift monitor, including the following steps: calling the kubernetes API to create a Pod; The public network IP that the operator has purchased, and records the application relationship between the public network IP and the tenant, and the binding relationship between the public network IP and the cluster nodes on the kubernetes cluster; the service exposure controller selects the public network IP address that needs to be bound; the service The exposed controller queries the cluster node where the Pod is located and logs in remotely, binds the public network IP to the network card interface; implements the packet forwarding from the public network IP to the Pod IP by executing the iptables command; the Pod IP drift monitor monitors the Pod IP in the kubernetes cluster in real time change event.

Description

technical field [0001] The present invention relates to the technical field of computer software technology application, specifically to the technical field of kubernetes, and in particular to a pod service mode exposed by kubernetes to the outside. Background technique [0002] With the maturity of container technology, container orchestration tools have also emerged. Among them, Google's open source kubernetes container orchestration tool is currently in the mainstream. Kubernetes can realize automatic deployment, automatic expansion and contraction, maintenance and other functions of container clusters. [0003] The smallest resource scheduling unit for running containers on kuberetes is the Pod, but if the Pod runs on a private network, external public network users cannot access it; now it is necessary to allow public network users to access the services of each Pod, and support Any port, any 4-layer or 7-layer protocol (such as tcp / http), the current solution of the k...

AI Technical Summary

Problems solved by technology

[0006] 1. It must be more than 30,000 ports, which does not meet the requirements of any port exposure;

[0007] 2. NodePort will expose the same port on all nodes, resulting in waste of port resources

[0009] 1. The development cost is high, and the relevant interfaces of the kubernetes load balancer need to be implemented;

[0010] 2. The link forwarding efficiency is low, and it needs to go through multiple links of Loadbalancer—>NodePort—>Service—>Pod;

[0011] 3. High cost of troubleshooting and repair

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