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docs: document options for default network driver 

Fixes issue #18410

Signed-off-by: Wen Cheng Ma <wenchma@cn.ibm.com>
This commit is contained in:
Wen Cheng Ma 2016-01-18 13:02:10 +08:00 committed by Tibor Vass
parent 16ba075162
commit 79f0588009
4 changed files with 75 additions and 5 deletions
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24
docs/reference/commandline/network_create.md
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@ -21,8 +21,8 @@ parent = "smn_cli"
--internal Restricts external access to the network
--ip-range=[] Allocate container ip from a sub-range
--ipam-driver=default IP Address Management Driver
-o --opt=map[] Set custom network plugin options
--ipam-opt=map[] Set custom IPAM plugin options
--ipam-opt=map[] Set custom IPAM driver specific options
-o --opt=map[] Set custom driver specific options
--subnet=[] Subnet in CIDR format that represents a network segment
Creates a new network. The `DRIVER` accepts `bridge` or `overlay` which are the
@ -122,6 +122,26 @@ docker network create -d overlay
```
Be sure that your subnetworks do not overlap. If they do, the network create fails and Engine returns an error.
# Bridge driver options
When creating a custom network, the default network driver (i.e. `bridge`) has additional options that can be passed.
The following are those options and the equivalent docker daemon flags used for docker0 bridge:
| Option | Equivalent | Description |
|--------------------------------------------------|-------------|-------------------------------------------------------|
| `com.docker.network.bridge.name` | - | bridge name to be used when creating the Linux bridge |
| `com.docker.network.bridge.enable_ip_masquerade` | `--ip-masq` | Enable IP masquerading |
| `com.docker.network.bridge.enable_icc` | `--icc` | Enable or Disable Inter Container Connectivity |
| `com.docker.network.bridge.host_binding_ipv4` | `--ip` | Default IP when binding container ports |
| `com.docker.network.mtu` | `--mtu` | Set the containers network MTU |
| `com.docker.network.enable_ipv6` | `--ipv6` | Enable IPv6 networking |
For example, let's use `-o` or `--opt` options to specify an IP address binding when publishing ports:
```bash
docker network create -o "com.docker.network.bridge.host_binding_ipv4"="172.19.0.1" simple-network
```
### Network internal mode
By default, when you connect a container to an `overlay` network, Docker also connects a bridge network to it to provide external connectivity.

5
docs/userguide/containers/networkingcontainers.md
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@ -168,7 +168,10 @@ If you inspect the network, you'll find that it has nothing in it.
"IPAM": {
"Driver": "default",
"Config": [
{}
{
"Subnet": "172.18.0.0/16",
"Gateway": "172.18.0.1/16"
}
]
},
"Containers": {},

47
docs/userguide/networking/work-with-networks.md
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@ -95,6 +95,53 @@ $ docker network create -d overlay
Be sure that your subnetworks do not overlap. If they do, the network create fails and Engine returns an error.
When creating a custom network, the default network driver (i.e. `bridge`) has additional options that can be passed.
The following are those options and the equivalent docker daemon flags used for docker0 bridge:
| Option | Equivalent | Description |
|--------------------------------------------------|-------------|-------------------------------------------------------|
| `com.docker.network.bridge.name` | - | bridge name to be used when creating the Linux bridge |
| `com.docker.network.bridge.enable_ip_masquerade` | `--ip-masq` | Enable IP masquerading |
| `com.docker.network.bridge.enable_icc` | `--icc` | Enable or Disable Inter Container Connectivity |
| `com.docker.network.bridge.host_binding_ipv4` | `--ip` | Default IP when binding container ports |
| `com.docker.network.mtu` | `--mtu` | Set the containers network MTU |
| `com.docker.network.enable_ipv6` | `--ipv6` | Enable IPv6 networking |
For example, now let's use `-o` or `--opt` options to specify an IP address binding when publishing ports:
```bash
$ docker network create -o "com.docker.network.bridge.host_binding_ipv4"="172.23.0.1" my-network
b1a086897963e6a2e7fc6868962e55e746bee8ad0c97b54a5831054b5f62672a
$ docker network inspect my-network
[
{
"Name": "my-network",
"Id": "b1a086897963e6a2e7fc6868962e55e746bee8ad0c97b54a5831054b5f62672a",
"Scope": "local",
"Driver": "bridge",
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "172.23.0.0/16",
"Gateway": "172.23.0.1/16"
}
]
},
"Containers": {},
"Options": {
"com.docker.network.bridge.host_binding_ipv4": "172.23.0.1"
}
}
]
$ docker run -d -P --name redis --net my-network redis
bafb0c808c53104b2c90346f284bda33a69beadcab4fc83ab8f2c5a4410cd129
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
bafb0c808c53 redis "/entrypoint.sh redis" 4 seconds ago Up 3 seconds 172.23.0.1:32770->6379/tcp redis
```
## Connect containers
You can connect containers dynamically to one or more networks. These networks

4
man/docker-network-create.1.md
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@ -150,10 +150,10 @@ If you want to create an externally isolated `overlay` network, you can specify
IP Address Management Driver
**--ipam-opt**=map[]
Set custom IPAM plugin options
Set custom IPAM driver options
**-o**, **--opt**=map[]
Set custom network plugin options
Set custom driver options
**--subnet**=[]
Subnet in CIDR format that represents a network segment