The container mode is to share a network namespace with an existing container. 
The disadvantage is that the isolation of the network is not good, and the used ports can no longer be used. The advantage is that the network performance is good, without nat conversion. The container will use the host's IP address and port, but other aspects of the container, such as the file system, are still isolated from the host. The container and the host share the network namespace. The container has an independent Network namespace, but does not perform any network settings on it, such as assigning veth pair and network bridge connection, configuring IP, etc. The container and the host share the Network namespace.Ī container and another container share a Network namespace, and a pod in kubernetes means that multiple containers share a Network namespace. However, because the Docker0 network card is virtualized, the external network cannot communicate directly, and can only access the container through port mapping, that is, when docker run creates the container, it is enabled through the -p or -P parameter, and when the container is accessed, it is 宿主机IP:容器端口 accessed container Because the containers in the same host are all connected to the same bridge, the containers can communicate directly through the container-ip of the container. At the same time, the Docker bridge is The default gateway of each container. When the container is started, an IP address will be assigned to the container from this network segment, which is called container-ip. Docker network modes how to#
How to use the network mode-designated mode and designated ipĭetailed network resources-Docker0 network card and four network modesĪfter installing Docker, you will find that the system automatically created a docker0 network card and other Docker network modes:ĭocker0 network card and four network modesĪfter the Docker installation is complete, a Linux bridge will be used to virtualize a Docker container bridge (docker0) on the host.Docker0 network card and four network modes.
Detailed network resources-Docker0 network card and four network modes.
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