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Docker generates an image by reading the dockerfile file. Dockerfile is a text file that contains all commands required by users to build images. After docker build  ， Docker automatically builds images through a series of command line operations. This article describes the commands in dockerfile. Usage of Dockerfile The docker build co ...

preface: The Spring container creates a bean object. Generally, it finds the class to be instantiated by looking up the class attribute value of the bean element through the reflection mechanism, so as to instantiate the bean object. This is to call the constructor to instantiate the bean object In some cases, a simple xml configuration file ...

Experimental requirements: Kubernetes was successfully deployed to prepare for subsequent experiments 1. Environmental requirements Server requirements: • recommended minimum hardware configuration: 2-core CPU, 2G memory, 20G hard disk • it is better for the server to access the external network. There will be a need to pull the ima ...

Introduction:   This article mainly introduces how to use private image to arrange containers in Kubernetes cluster. For image download, domain name resolution and time synchronization, please click   Alibaba open source mirror station Operation method Kubernetes clusters support the orchestration of containers using private ima ...

This article introduces the purpose of the main commands in Dockerfile FROM Specify the basic image. The recommended method is image:tag. Specify it precisely. Note: you can use multiple FROM, which will build multiple mirrors. For example, I want busybox and nginx at the same time. I can write this FROM busybox:latest FROM nginx:latest ...

Container network configuration of Docker The creation of namespace in Linux kernel ip netns command You can complete various operations on the Network Namespace with the help of the ip netns command. The ip netns command comes from the iproute installation package. Generally, the system will install it by default. If not, please install it ...

The Linux kernel implements namespace creation ip netns command You can use the ip netns command to complete various operations on the Network Namespace. The ip netns command comes from the iproute installation package, which is usually installed by default. If not, install it yourself. Note: The ip netns command requires sudo privileges whe ...

docker container network configuration The creation of namespace in Linux kernel ip netns command You can complete various operations on the Network Namespace with the help of the ip netns command. The ip netns command comes from the iproute installation package. Generally, the system will install it by default. If not, please install it ...

docker container network configuration The creation of namespace in Linux kernel ip netns command You can complete various operations on the Network Namespace with the help of the ip netns command. The ip netns command comes from the iproute installation package. Generally, the system will install it by default. If not, please install it y ...

KUBEADM Build Cluster (2) 1. Build a cluster environment with kubeadm 1.1 Architecture In the last lesson, we explained the basic concept of k8s and several main components. After we understand the basic concept of k8s, we can actually use it officially. But the previous lessons are all demonstrations on katacoda, which only give us about 15 mi ...