github.com/brahmaroutu/docker@v1.2.1-0.20160809185609-eb28dde01f16/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  ```markdown
    14  Usage:  docker network connect [OPTIONS] NETWORK CONTAINER
    15  
    16  Connect a container to a network
    17  
    18  Options:
    19        --alias value           Add network-scoped alias for the container (default [])
    20        --help                  Print usage
    21        --ip string             IP Address
    22        --ip6 string            IPv6 Address
    23        --link value            Add link to another container (default [])
    24        --link-local-ip value   Add a link-local address for the container (default [])
    25  ```
    26  
    27  Connects a container to a network. You can connect a container by name
    28  or by ID. Once connected, the container can communicate with other containers in
    29  the same network.
    30  
    31  ```bash
    32  $ docker network connect multi-host-network container1
    33  ```
    34  
    35  You can also use the `docker run --network=<network-name>` option to start a container and immediately connect it to a network.
    36  
    37  ```bash
    38  $ docker run -itd --network=multi-host-network busybox
    39  ```
    40  
    41  You can specify the IP address you want to be assigned to the container's interface.
    42  
    43  ```bash
    44  $ docker network connect --ip 10.10.36.122 multi-host-network container2
    45  ```
    46  
    47  You can use `--link` option to link another container with a preferred alias
    48  
    49  ```bash
    50  $ docker network connect --link container1:c1 multi-host-network container2
    51  ```
    52  
    53  `--alias` option can be used to resolve the container by another name in the network
    54  being connected to.
    55  
    56  ```bash
    57  $ docker network connect --alias db --alias mysql multi-host-network container2
    58  ```
    59  
    60  You can pause, restart, and stop containers that are connected to a network.
    61  Paused containers remain connected and can be revealed by a `network inspect`.
    62  When the container is stopped, it does not appear on the network until you restart
    63  it.
    64  
    65  If specified, the container's IP address(es) is reapplied when a stopped
    66  container is restarted. If the IP address is no longer available, the container
    67  fails to start. One way to guarantee that the IP address is available is
    68  to specify an `--ip-range` when creating the network, and choose the static IP
    69  address(es) from outside that range. This ensures that the IP address is not
    70  given to another container while this container is not on the network.
    71  
    72  ```bash
    73  $ docker network create --subnet 172.20.0.0/16 --ip-range 172.20.240.0/20 multi-host-network
    74  ```
    75  
    76  ```bash
    77  $ docker network connect --ip 172.20.128.2 multi-host-network container2
    78  ```
    79  
    80  To verify the container is connected, use the `docker network inspect` command. Use `docker network disconnect` to remove a container from the network.
    81  
    82  Once connected in network, containers can communicate using only another
    83  container's IP address or name. For `overlay` networks or custom plugins that
    84  support multi-host connectivity, containers connected to the same multi-host
    85  network but launched from different Engines can also communicate in this way.
    86  
    87  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.
    88  
    89  ## Related information
    90  
    91  * [network inspect](network_inspect.md)
    92  * [network create](network_create.md)
    93  * [network disconnect](network_disconnect.md)
    94  * [network ls](network_ls.md)
    95  * [network rm](network_rm.md)
    96  * [Understand Docker container networks](../../userguide/networking/dockernetworks.md)
    97  * [Work with networks](../../userguide/networking/work-with-networks.md)