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Technical Articles

Operation and Maintenance

How to exit docker into container

How to exit the Docker container: Run the docker stop <Container name or ID> command to send a stop request to the Docker daemon. The daemon sends a SIGTERM signal to the container to exit with a controllable exit, and if it does not exit within 10 seconds, a SIGKILL signal is sent to exit forcibly.

Apr 15, 2025 am 08:03 AM

docker

How to cluster docker

Docker clustering is a distributed container management system that connects multiple hosts, allowing users to scale capacity, improve availability and simplify management. Creating a Docker cluster includes installing Docker Engine, creating a cluster network, joining a cluster, and deploying containers. Docker Swarm and Kubernetes are both tools for managing clusters, Swarm is suitable for small and medium clusters, and Kubernetes has more advanced features. The benefits of Docker clusters include scalability, high availability, simplified management, resource optimization, and rapid deployment.

Apr 15, 2025 am 08:00 AM

docker 资源优化

What to do if the docker warehouse is hung

When a Docker repository is hung up, you can do the following: Check the network connection and restart the Docker service; use a local image or try to replace the repository; create your own repository or contact the repository provider.

Apr 15, 2025 am 07:57 AM

docker

How to patch docker containers

Several ways to patch Docker containers are: using official repository images, creating your own images and manually patching, and using patch management tools. Specific steps include: identifying containers that need to be patched, pulling patch images, replacing affected containers, and verifying patches.

Apr 15, 2025 am 07:54 AM

docker

How to delete image files by docker

To delete a Docker image file, you can use the docker image rm command: To delete a single image, use its full or partial name (such as docker image rm my-image). To delete multiple images, use wildcard or space-separated list of image names (such as docker image rm my-*). To delete all unused images, use the docker image prune command.

Apr 15, 2025 am 07:51 AM

docker

How to connect to docker

Docker provides three networking modes: bridge mode: create an independent virtual network interface for containers to realize external network connections. Host mode: bind the container network interface to the host to share the host network resources. Container Mode: Connect to the network namespace of other containers, sharing their network interface and IP address.

Apr 15, 2025 am 07:48 AM

docker

How to check environment variables by docker

To view environment variables in a Docker container, the steps are as follows: Get the container ID (docker ps -a) Use the following command to view environment variables: docker inspect -f '{{json .Config.Env}}' <container-id>

Apr 15, 2025 am 07:45 AM

docker

How to build redis

Docker is a technology that implements Redis containerization to ensure the security, portability and scalability of services. Prerequisites: Docker installation and Redis image. Steps: Run the command line docker run to create the Redis container. Connect to the container using the Redis client or command line. Start/stop/restart the container via the command line. View the log or delete the container.

Apr 15, 2025 am 07:42 AM

redis docker

What to do if the docker network conflict

Docker network conflicts can be resolved by creating a custom Docker network and assigning it to the associated container. Configure the container to use bridge mode to obtain a unique IP address. Map container ports to host ports to avoid port conflicts. Configure port ranges to automatically allocate ports at runtime. Create subnets in the Docker network to provide a larger range of IP addresses for containers. Use container name resolution to enable containers to communicate with each other's names. When using Docker Compose, use the network_mode: bridge option to prevent conflicts. Refer to the official Docker documentation for more detailed guidance.

Apr 15, 2025 am 07:39 AM

docker 子网

How to set up docker host

To set up a host for a Docker container, you need to modify the /etc/hosts file on the host. The steps include: 1. Determine the IP address of the target container; 2. Edit the hosts file; 3. Add host records. For example, if you set the container IP address 172.17.0.2 to the host name my-host, add 172.17.0.2 my-host to the /etc/hosts file.

Apr 15, 2025 am 07:36 AM

docker

How to save files in docker

In Docker containers, files are usually not persisted, and methods are needed to persist files: use data volumes, share the file system between containers, and files are retained after the container is stopped. Use Docker volumes, managed by Docker, similar to data volumes. Use local storage, for temporary storage only, data is lost after the container restarts. Using persistent storage, provided by third-party storage providers, persisting large data sets.

Apr 15, 2025 am 07:33 AM

docker 持久化存储

How to install oracle docker

How to install Oracle database in Docker: Pull the Oracle Docker image. Create a data volume to store database data. Run the Docker container and map the data volume to the Oracle database default datastore path. After running, you can use Oracle instances.

Apr 15, 2025 am 07:30 AM

oracle docker

How to view containers in docker

You can view Docker container details through the following command: docker ps: display the running container list docker inspect <container_id>: display the full configuration and status information docker logs <container_id>: view the log docker inspect -f '{{ .Config.Env }}' <container_id>: view the environment variable docker inspect -f '{{ .NetworkS

Apr 15, 2025 am 07:27 AM

docker

What are the docker commands

Docker commands are used to manage containers and container environments, including the following command categories: Mirror commands Container commands Network commands Volume commands Command Group commands Other useful commands In addition, multiple example commands are provided for reference. For more details, please refer to the official Docker documentation.

Apr 15, 2025 am 07:24 AM

docker