What should be taken into consideration when using Docker?
When using Docker, it is important to keep the following in mind:
- Container size: Containers should be designed to be lightweight to avoid introducing unnecessary dependencies and files, in order to minimize the container size.
- Security: Ensure that both the containers and the images used are verified and secure. Obtain images only from trusted sources and regularly update them to fix security vulnerabilities.
- Network configuration: When creating a container, it is important to consider the network setting to ensure it can communicate with other containers and the host, while adhering to best practices for network security.
- Data management: Ensure the persistence of data in containers by storing it on volumes on the host or on network storage, so that the data is not lost when the container is restarted or migrated.
- Resource limitation: Set proper resource limits for containers to prevent excessive use of host resources and impacting the performance of other containers or the host.
- Log management: Recording and managing logs within containers for troubleshooting and monitoring purposes when needed.
- Regular maintenance: Regularly clean up unused containers and images to free up disk space and keep the system clean.
- Monitoring and alerting: Utilize appropriate monitoring tools to track the performance and health status of containers, and set up alerts to promptly address any issues.
- Version control: For containers in a production environment, use a version control system (such as Git) to manage the Dockerfile and other related files, allowing for tracking and managing changes to the containers.
- Provide appropriate documentation and labels for containers and images so that other team members can understand their purpose and configuration.
