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四、Deploy managed POD by copy mechanism

Liansong published on 2019-09-17 11:11:51 included in K8S-Study Notes

1. Survival Probe Why come up with such a profound word? We know that if a container program in the POD crashes, kubenetes will restart the program, but the problem is, if it is not a crash, such as a deadlock, or throwing an exception, etc., what to do at this time, kubenetes does not know Whether your container is normal or not, you need to use a probe at this time.

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三、Containers running in Kubernetes

Liansong published on 2019-09-15 11:16:51 included in K8S-Study Notes

1. Why create a POD We know that POD is the smallest unit managed by Kubernetes. Why does Kubernetes not directly manage containers, but manage PODs? There is a reason for this. We know that a container is a single process. What does it mean? The design idea of a container is that each container only runs one process. If you use dry bernetes to directly manage these containers, it must be complicated, so I will do it The POD is introduced to realize resource and network isolation between containers.

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二、The use of Kubernetes and Docker

Liansong published on 2019-09-11 19:16:51 included in K8S-Study Notes

1. Understanding Docker images, file systems and containers The image of the container is a file after packaging and compiling the container. The packaging image depends on the Dockerfile file. The From line defines the starting content of the image, which is the basic image for construction. The process of building the image is to upload the entire directory of files to the Docker guardian During the process, Docker will first pull the basic image from the basic image warehouse, and then the packaging of the image is a layered structure, with the basic image as a layer, and then each command will be used as a new layer, layer by layer , the whole is a joint file system.

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一、Introduction to Kubernetes

Liansong published on 2019-09-10 21:56:51 included in K8S-Study Notes

1. Comparison between monolithic applications and microservices Disadvantages of monolithic applications: run on several servers in the form of a single process or several processes, the deployment cycle is long, and the operation and maintenance and development are disconnected. After the developers complete the development, they are packaged into a whole for operation and maintenance deployment. There is no decoupling between modules. To modify a module, the whole package needs to be deployed.