Where is the image saved by docker?

LXC is the foundation of Docker, and it realizes resource and environment isolation through cgroups and namespaces of the Linux kernel. 1) Resource isolation: cgroups limit CPU, memory and other resources. 2) Environment isolation: namespaces provides independent process, network, and file system views.

Best practices for using Docker on Linux include: 1. Create and run containers using dockerrun commands, 2. Use DockerCompose to manage multi-container applications, 3. Regularly clean unused images and containers, 4. Use multi-stage construction to optimize image size, 5. Limit container resource usage to improve security, and 6. Follow Dockerfile best practices to improve readability and maintenance. These practices can help users use Docker efficiently, avoid common problems and optimize containerized applications.

Using Docker on Linux can improve development and deployment efficiency. 1. Install Docker: Use scripts to install Docker on Ubuntu. 2. Verify the installation: Run sudodockerrunhello-world. 3. Basic usage: Create an Nginx container dockerrun-namemy-nginx-p8080:80-dnginx. 4. Advanced usage: Create a custom image, build and run using Dockerfile. 5. Optimization and Best Practices: Follow best practices for writing Dockerfiles using multi-stage builds and DockerCompose.

The core of Docker monitoring is to collect and analyze the operating data of containers, mainly including indicators such as CPU usage, memory usage, network traffic and disk I/O. By using tools such as Prometheus, Grafana and cAdvisor, comprehensive monitoring and performance optimization of containers can be achieved.

DockerSwarm can be used to build scalable and highly available container clusters. 1) Initialize the Swarm cluster using dockerswarminit. 2) Join the Swarm cluster to use dockerswarmjoin--token:. 3) Create a service using dockerservicecreate-namemy-nginx--replicas3nginx. 4) Deploy complex services using dockerstackdeploy-cdocker-compose.ymlmyapp.

How to use Docker and Kubernetes to perform container orchestration of enterprise applications? Implement it through the following steps: Create a Docker image and push it to DockerHub. Create Deployment and Service in Kubernetes to deploy applications. Use Ingress to manage external access. Apply performance optimization and best practices such as multi-stage construction and resource constraints.

Docker FAQs can be diagnosed and solved through the following steps: 1. View container status and logs, 2. Check network configuration, 3. Ensure that the volume mounts correctly. Through these methods, problems in Docker can be quickly located and fixed, improving system stability and performance.

Docker is a must-have skill for DevOps engineers. 1.Docker is an open source containerized platform that achieves isolation and portability by packaging applications and their dependencies into containers. 2. Docker works with namespaces, control groups and federated file systems. 3. Basic usage includes creating, running and managing containers. 4. Advanced usage includes using DockerCompose to manage multi-container applications. 5. Common errors include container failure, port mapping problems, and data persistence problems. Debugging skills include viewing logs, entering containers, and viewing detailed information. 6. Performance optimization and best practices include image optimization, resource constraints, network optimization and best practices for using Dockerfile.