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- How to use docker virtual network
- Docker is one of the most popular containerization platforms today, which can greatly simplify the deployment and management of applications. One of the most important features is Docker virtual network, which helps users create multiple containers on a separate physical machine and work collaboratively while providing good network isolation and security. In this article, we will introduce how to use docker virtual network to build communication and network interoperability between containers, and also introduce the importance of network isolation and security. 1. Create and manage docker virtual network First, we need
- Docker 753 2023-04-19 09:29:48
- How to install ssh on docker centos
- Docker is a lightweight virtualization solution that provides a lightweight, portable container for running applications in different environments. The use of Docker has become more popular. In order to facilitate operation and maintenance, we need to connect the operating system in the container to the external network. This article will introduce how to install SSH in the Docker CentOS container. 1. To copy the ssh file, you first need to generate an ssh key pair on the local host. Open the terminal on the local host and enter the following command: ```ssh-keyge
- Docker 1567 2023-04-19 09:27:51
- How to get the host IP for docker container
- Docker is an open source platform that provides a simple and effective way to run applications on containers. With the rapid development of cloud computing technology, Docker has become one of the most popular virtualization technologies. In the process of using Docker containers, sometimes you need to obtain the IP address of the host. This article will introduce how to obtain the host IP address in the Docker container. 1. Network mode of Docker container Docker container has four network modes, namely: 1. Bridge mode (Bridge): The container is connected to
- Docker 10324 2023-04-19 09:26:45
- Why docker local images are automatically cleared
- As Docker becomes increasingly popular in the development and deployment world, more and more people are looking for ways to maximize the benefits of its use. One of the questions is, why are local mirrors cleared automatically? Docker is an open source platform that helps developers and operators build and deploy distributed applications more easily. One of the main features is the build image, which packages the application and all dependencies into a single file. Docker images can be built starting from a Docker base image or from other already built images. However
- Docker 1833 2023-04-19 09:25:41
- What to do if docker compose goes wrong
- Docker Compose is a very practical tool that helps developers manage and deploy Docker applications in different environments. However, sometimes we encounter some errors and problems when using Docker Compose, which may hinder our workflow. This article will explore some common Docker Compose error situations. 1. The compose file cannot be found. When using Docker Compose, we must first ensure that our compose
- Docker 2310 2023-04-19 09:24:30
- What to do if docker login fails
- Docker is a widely used cloud computing technology that packages applications in an independent container for easy porting and deployment in different computer systems. However, sometimes we may encounter the problem of Docker login failure. This problem is very common in the process of using Docker. Let us take a look at the causes and solutions of this problem. 1. Reasons for Docker login failure 1. The username or password is incorrect. Docker login requires the Docker Hub account and password.
- Docker 5878 2023-04-19 09:23:08
- Where does the docker image exist?
- Docker is a platform that makes it easy to package, publish, and manage applications. In Docker, the image is a very important concept. It actually contains all the code and dependencies of the application, so it is also called a "container image." So, where do Docker images actually live? First of all, you need to understand that in Docker, images and containers are two different concepts. The image is a read-only file system, while the container is a writable layer created on the basis of the image and runs on top of the image.
- Docker 1668 2023-04-19 09:21:44
- Let's talk about how many dockers are suitable to run
- It is suitable to run several Dockers. With the popularity of cloud computing, more and more people are beginning to use Docker to deploy applications and development environments. However, before using Docker, many people will ask a question: How many Docker containers do I need to run to meet my needs? This article will show you how to evaluate how many Docker containers you need to run. First, the load on the system and applications needs to be assessed. For systems, there are CPU, memory, disk IO, and network IO to consider. right
- Docker 583 2023-04-18 17:13:52
- How to copy host files to docker
- Today, the use of Docker in software development has become mainstream because it allows you to quickly build, deploy, and manage applications. Docker is widely used to create and run containers due to its portability and lightweight features. However, many people may encounter some problems when working with files in Docker. This article will teach you how to easily copy files on the host to Docker. How to copy files in Docker To copy files from the host to Docker, we can use
- Docker 5705 2023-04-18 17:12:56
- Does docker need root permissions?
- Docker is a very popular container technology that allows applications to be packaged into containers and deployed and run in different environments. However, some people may be concerned that Docker requires root privileges to use. This article will explore this problem and provide some solutions. First, it’s important to be clear that Docker does not necessarily require root privileges to run. By default, Docker needs to be run under the root user or a user with sudo privileges. However, you can make Docker
- Docker 4311 2023-04-18 17:12:28
- What can be installed with docker?
- What can be installed with Docker? Docker is an open source containerization platform that helps developers and system administrators easily create, deploy, and run applications and services. The emergence of Docker has changed the way software is developed, tested and deployed to a great extent. So, what can Docker be used for? Let us find out below. First of all, the biggest use of Docker is to package applications. Developers can use Docker to package applications and all dependencies, then deliver them to a testing team or deploy to production
- Docker 1139 2023-04-18 17:11:50
- How to use docker without connecting to the external network
- Docker is a popular open source project that allows you to run applications on a single platform, including operating systems such as Windows, Linux, and macOS. Docker is very different from a virtual machine because it uses containers to isolate and run applications, rather than using a virtual machine to emulate an entire operating system. However, sometimes you may need to use Docker without an external network connection. How to solve this problem? This article will introduce some methods and techniques so that you can use it without an external network connection.
- Docker 1541 2023-04-18 17:09:42
- What does docker solve?
- What does Docker solve? In software development, development, testing, and deployment often need to be performed on different machines. This will involve issues with the operating environment. In the past, ensuring that developers and testers had a consistent running environment on different machines required a lot of time and effort to configure and manage. With the emergence of Docker, this problem has been solved very well. Docker is a virtualization technology that allows you to package your application and dependent libraries into a portable container called a Docker container.
- Docker 843 2023-04-18 17:08:11
- How to solve docker port connection failure
- Docker is one of the most popular containerization technologies currently, which provides a lightweight and portable running environment for applications. However, sometimes you may encounter connection failures, especially when trying to connect to the Docker container's port. In this article, we will explore the reasons that may cause this connection failure issue and provide some solutions. Why does the connection failure occur? Before exploring the solutions, we need to understand why the connection failure issue occurs. The following are some possible reasons for connection failure: 1. Port mapping error Dock
- Docker 2885 2023-04-18 15:44:41
- How to completely uninstall docker
- With the rapid development of cloud computing and container technology, Docker has become one of the most popular containerized application platforms today. However, for some users, they may encounter some problems, such as being unable to start Docker containers, unable to update Docker, etc. These issues may be related to Docker not being removed properly. This article will show you how to completely uninstall Docker to resolve these issues. Step 1: Stop Docker Before uninstalling Docker, you first need to stop Docker. On the terminal, enter the following command to stop
- Docker 40123 2023-04-18 15:45:12