What impact does mac docker have?

What is the impact of using Docker on the Mac system?

Docker is currently a popular container technology, providing developers and operation and maintenance personnel with a faster and more convenient deployment method. However, when using Docker, we also need to pay attention to the impact of Docker on the operating system, especially when used under Mac systems.

The first thing you need to understand is that in the Mac system, Docker does not run directly in the host operating system, but in a virtual machine. This is because the Mac system uses the Darwin kernel, and Docker runs under the Linux kernel. The two are incompatible, so a virtual machine is needed to simulate the Linux system.

The biggest impact of this virtualization method is performance issues. Virtualization will increase the resource usage and reduce the actual available physical resources, so the container will run slower on the Mac system than on the Linux system, especially in high-frequency operations, such as hot reloading, the container loading speed will be obvious Slow down.

Secondly, when using Docker under Mac system, you need to pay attention to file sharing. Since Docker runs in a virtual machine, the virtual machine needs to access files on the host through virtual disk and network transmission, so the performance of file sharing is relatively poor. Docker provides a variety of file sharing methods, including traditional shared folders and the more efficient osxfs sharing method, but no matter which method, they are not as fast and efficient as in Linux systems.

Again, when using Docker under Mac system, you need to pay attention to the usage of disk space. Since the virtual machine itself already occupies part of the space, and each Docker container also requires a certain amount of disk space, disk space may be consumed faster after using Docker, especially when building some large images that require more space. . This requires attention to cleaning up Docker images and containers in a timely manner to avoid peaking disk space.

Finally, another important impact is network settings. When using Docker under a Mac system, the container uses a nested virtual network, so the communication between the container and the host cannot be done directly and needs to be completed through port mapping. Due to this limitation of the network, the development environment and deployment scripts may need to be slightly adjusted.

In short, for the use of Docker under Mac system, you need to pay attention to not only the deployment and configuration of Docker itself, but also the impact of Docker on system performance, file sharing, disk space and network settings. In this way, you can optimize and best use Docker and improve the efficiency of development and deployment.

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