github.com/kobeld/docker@v1.12.0-rc1/docs/reference/commandline/network_connect.md (about)

     1  <!--[metadata]>
     2  +++
     3  title = "network connect"
     4  description = "The network connect command description and usage"
     5  keywords = ["network, connect, user-defined"]
     6  [menu.main]
     7  parent = "smn_cli"
     8  +++
     9  <![end-metadata]-->
    10  
    11  # network connect
    12  
    13      Usage:  docker network connect [OPTIONS] NETWORK CONTAINER
    14  
    15      Connects a container to a network
    16  
    17        --alias=[]         Add network-scoped alias for the container
    18        --help             Print usage
    19        --ip               IPv4 Address
    20        --ip6              IPv6 Address
    21        --link=[]          Add a link to another container
    22        --link-local-ip=[] IPv4/IPv6 link-local addresses
    23  
    24  Connects a container to a network. You can connect a container by name
    25  or by ID. Once connected, the container can communicate with other containers in
    26  the same network.
    27  
    28  ```bash
    29  $ docker network connect multi-host-network container1
    30  ```
    31  
    32  You can also use the `docker run --net=<network-name>` option to start a container and immediately connect it to a network.
    33  
    34  ```bash
    35  $ docker run -itd --net=multi-host-network busybox
    36  ```
    37  
    38  You can specify the IP address you want to be assigned to the container's interface.
    39  
    40  ```bash
    41  $ docker network connect --ip 10.10.36.122 multi-host-network container2
    42  ```
    43  
    44  You can use `--link` option to link another container with a preferred alias
    45  
    46  ```bash
    47  $ docker network connect --link container1:c1 multi-host-network container2
    48  ```
    49  
    50  `--alias` option can be used to resolve the container by another name in the network
    51  being connected to.
    52  
    53  ```bash
    54  $ docker network connect --alias db --alias mysql multi-host-network container2
    55  ```
    56  
    57  You can pause, restart, and stop containers that are connected to a network.
    58  Paused containers remain connected and can be revealed by a `network inspect`.
    59  When the container is stopped, it does not appear on the network until you restart
    60  it.
    61  
    62  If specified, the container's IP address(es) is reapplied when a stopped
    63  container is restarted. If the IP address is no longer available, the container
    64  fails to start. One way to guarantee that the IP address is available is
    65  to specify an `--ip-range` when creating the network, and choose the static IP
    66  address(es) from outside that range. This ensures that the IP address is not
    67  given to another container while this container is not on the network.
    68  
    69  ```bash
    70  $ docker network create --subnet 172.20.0.0/16 --ip-range 172.20.240.0/20 multi-host-network
    71  ```
    72  
    73  ```bash
    74  $ docker network connect --ip 172.20.128.2 multi-host-network container2
    75  ```
    76  
    77  To verify the container is connected, use the `docker network inspect` command. Use `docker network disconnect` to remove a container from the network.
    78  
    79  Once connected in network, containers can communicate using only another
    80  container's IP address or name. For `overlay` networks or custom plugins that
    81  support multi-host connectivity, containers connected to the same multi-host
    82  network but launched from different Engines can also communicate in this way.
    83  
    84  You can connect a container to one or more networks. The networks need not be the same type. For example, you can connect a single container bridge and overlay networks.
    85  
    86  ## Related information
    87  
    88  * [network inspect](network_inspect.md)
    89  * [network create](network_create.md)
    90  * [network disconnect](network_disconnect.md)
    91  * [network ls](network_ls.md)
    92  * [network rm](network_rm.md)
    93  * [Understand Docker container networks](../../userguide/networking/dockernetworks.md)
    94  * [Work with networks](../../userguide/networking/work-with-networks.md)