If no subnet is requestedįor the network, Vagrant will connect the vagrant_network to the container. AnĮxample of these networks is shown later in this page. Where is the subnet for the network if defined by the user. Vagrant names the networks inside docker as vagrant_network or vagrant_network_ Networks to the requested containers using the docker network connect for each
Once these networks have been created, Vagrant will attach these Networks share the same subnet, Vagrant will reuse that existing network for multipleĬontainers. With the provided options from the network config inside your Vagrantfile. Each docker network is groupedīy the subnet used for a requested ip address.įor each newly unique network, Vagrant will run the docker network create subcommand Vagrant will do its best to create and manage networksįor any containers configured inside the Vagrantfile. RX bytes:0 (0.0 b) TX bytes:0 (0.Vagrant uses the docker network command under the hood to create and manage TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:14 errors:0 dropped:0 overruns:0 carrier:0 RX packets:88 errors:0 dropped:0 overruns:0 frame:0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Step 2: Create a Docker container ➜ ~ docker run -itd -name networkTest1 -net mynetwork -ip 172.18.0.2 centos:latest /bin/bashĪt this point, the Docker container created holds the IP of 172.18.0.2. Here are the specific steps:Ĭreate a custom network and specify a segment: 172.18.0.0/16 ➜ ~ docker network create -subnet=172.18.0.0/16 mynetwork Therefore, you need to create a custom network. When starting the Docker container, using the default network does not support the assignment of fixed IP, as follows: ➜ ~ docker run -itd -net bridge -ip 172.17.0.10 centos:latest /bin/bashĦeb1f228cf308d1c60db30093c126acbfd0cb21d76cb448c678bab0f1a7c0df6ĭocker: Error response from daemon: User specified IP address is supported on user defined networks only. Create a custom network: (Setting Fixed IP) With - network=host, the network of the Docker container is attached to the host, and the two are interoperable.įor example, if you run a Web service in a container and listen on port 8080, the host's port 8080 will automatically map to the container. With - network=none, the docker container does not assign IP to the LAN.
Each time the Docker container restarts, the corresponding IP address will be acquired in sequence, which will lead to the restart of Docker, and the IP address of Docker will change. When starting Docker, you can specify the network type with the - network parameter, such as: ➜ ~ docker run -itd -name test1 -network bridge -ip 172.17.0.10 centos:latest /bin/bash bridge: bridging networkĭocker containers started by default are all bridged networks created by bridge and Docker installation. Docker default networkĪfter Docker is installed, the following three network types are created by default: $ docker network ls After querying the data, Docker supports setting fixed IP. However, every time Docker restarts, the IP address of the container will change.
#DOCKER SET IP ADDRESS OF CONTAINER SOFTWARE#
Sometimes the installed software needs to bind to other containers in the Docker LAN, such as the intranet IP of other containers when deploying the MongoDB replica set. It often requires several Docker containers to be opened at the same time. Docker is often used to simulate the deployment of a project in a production environment.