A brief analysis of the main directories occupied by Docker and their functions-Docker-php.cn

Home

Operation and Maintenance

Docker

A brief analysis of the main directories occupied by Docker and their functions

PHPz

Apr 18, 2023 am 10:25 AM

Docker is a popular containerization tool that makes it easy to create, manage, and run containers. When using Docker, sometimes you need to know which directories Docker occupies. This article will introduce the main directories occupied by Docker and their functions.

/var/lib/docker

/var/lib/docker is Docker’s default data storage location, including Docker images, containers, and volumes. Subdirectories under this directory include:

/containers: stores container-related data and metadata, including container configuration files and log files;
/image: stores Docker images The file system and metadata;
/volumes: stores the data and metadata of the Docker volume.

These directories are very important for running Docker containers and will result in data loss if deleted or emptied.

/var/run/docker.sock

/var/run/docker.sock is the Unix socket file for the Docker daemon, used to communicate with the Docker API communicate. This file can be accessed by the Docker client and other containers to facilitate the management of data such as containers, images, and volumes.

/etc/docker

/etc/docker directory contains Docker’s default configuration file, such as daemon.json, which contains configuration options for the Docker daemon process, such as images Accelerators, container log levels, and more. Modifying these files requires restarting the Docker daemon to take effect.

/var/log

/var/log is the log directory of the Linux system, including Docker logs and daemon process logs. Docker logs the output of containers and daemons, which can be used for purposes such as troubleshooting and run log analysis.

/run/docker

/run/docker Contains Docker’s runtime files, such as the container’s process information and status. When starting a Docker container, the container's process information will be stored in the /run/docker/containers/ directory. Runtime files may contain sensitive information and should be appropriately secured.

Summary

This article introduces several important directories occupied by Docker, including /var/lib/docker for storing data and the communication socket file of the daemon process /var/run/docker. sock, configuration file directory/etc/docker, log directory/var/log, runtime file directory/run/docker. Understanding these directories helps you better understand and manage Docker containers and images, while also better protecting the data and security of your containers and host systems.

The above is the detailed content of A brief analysis of the main directories occupied by Docker and their functions. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Docker and Linux: The Perfect PartnershipApr 30, 2025 am 12:02 AM

Docker and Linux are perfect matches because they can simplify the development and deployment of applications. 1) Docker uses Linux's namespaces and cgroups to implement container isolation and resource management. 2) Docker containers are more efficient than virtual machines, have faster startup speeds, and the mirrored hierarchical structure is easy to build and distribute. 3) On Linux, the installation and use of Docker is very simple, with only a few commands. 4) Through DockerCompose, you can easily manage and deploy multi-container applications.

Docker vs. Kubernetes: Deciding Which to UseApr 29, 2025 am 12:05 AM

The difference between Docker and Kubernetes is that Docker is a containerized platform suitable for small projects and development environments; Kubernetes is a container orchestration system suitable for large projects and production environments. 1.Docker simplifies application deployment and is suitable for small projects with limited resources. 2. Kubernetes provides automation and scalability capabilities, suitable for large projects that require efficient management.

Docker and Kubernetes: Building Scalable ApplicationsApr 28, 2025 am 12:18 AM

Use Docker and Kubernetes to build scalable applications. 1) Create container images using Dockerfile, 2) Deployment and Service of Kubernetes through kubectl command, 3) Use HorizontalPodAutoscaler to achieve automatic scaling, thereby building an efficient and scalable application architecture.

Kubernetes and Docker: A Comparative AnalysisApr 27, 2025 am 12:05 AM

The main difference between Docker and Kubernetes is that Docker is used for containerization, while Kubernetes is used for container orchestration. 1.Docker provides a consistent environment to develop, test and deploy applications, and implement isolation and resource limitation through containers. 2. Kubernetes manages containerized applications, provides automated deployment, expansion and management functions, and supports load balancing and automatic scaling. The combination of the two can improve application deployment and management efficiency.

Running Docker on Linux: Installation and ConfigurationApr 26, 2025 am 12:12 AM

Installing and configuring Docker on Linux requires ensuring that the system is 64-bit and kernel version 3.10 and above, use the command "sudoapt-getupdate" and install it with the command "sudoapt-getupdate" and verify it with "sudoapt-getupdate" and. Docker uses the namespace and control groups of the Linux kernel to achieve container isolation and resource limitation. The image is a read-only template, and the container can be modified. Examples of usage include running an Nginx server and creating images with custom Dockerfiles. common

Why Use Docker? Benefits and Advantages ExplainedApr 25, 2025 am 12:05 AM

The reason for using Docker is that it provides an efficient, portable and consistent environment to package, distribute, and run applications. 1) Docker is a containerized platform that allows developers to package applications and their dependencies into lightweight, portable containers. 2) It is based on Linux container technology and joint file system to ensure fast startup and efficient operation. 3) Docker supports multi-stage construction, optimizes image size and deployment speed. 4) Using Docker can simplify development and deployment processes, improve efficiency and ensure consistency across environments.

Docker in Action: Real-World Examples and Use CasesApr 24, 2025 am 12:10 AM

Docker's application scenarios in actual projects include simplifying deployment, managing multi-container applications and performance optimization. 1.Docker simplifies application deployment, such as using Dockerfile to deploy Node.js applications. 2. DockerCompose manages multi-container applications, such as web and database services in microservice architecture. 3. Performance optimization uses multi-stage construction to reduce the image size and monitor the container status through health checks.

Docker vs. Kubernetes: Use Cases and ScenariosApr 23, 2025 am 12:11 AM

Select Docker in a small project or development environment, and Kubernetes in a large project or production environment. 1.Docker is suitable for rapid iteration and testing, 2. Kubernetes provides powerful container orchestration capabilities, suitable for managing and expanding large applications.

See all articles