I just migrated to using Docker for Mac, from previously using Docker Toolbox with virtualbox for OSX. I used to get the machine IP address with $(docker-machine ip default). Is there a reliable. Here is how you can get docker host ip on Mac ## docker-machine ip vmname $ docker-machine ip default To get names of all docker machines, you can use. Docker-machine ls NAME ACTIVE URL STATE URL SWARM DOCKER ERRORS default. virtualbox Running tcp://192.168.99.100:2376 v1.9.1 Suggested posts: Docker quick start guide on Mac.

MACVLAN creates multiple virtual network interfaces with different MAC addresses. This way if your system has multiple IP addresses with MAC addresses then we can create multiple virtual network interfaces each having their own IP address and MAC address.

MACVLAN doesn’t need to learn(identify) mac addresses of the systems within the network to distribute traffic as it know’s every mac address, this makes it fast and easy to setup than bridge type networking.

Problems with docker containers port binding:

If a container uses port 8000 of host then no other containers can use that port.
Binding multiple ports to container can be done by specifying port range but this operation takes more time depending on no. of ports to bind.
IPTables rules become cumbersome as no. of bindings increase.

Advantages of MACVLAN:

IPTables aren’t affected.
No port binding.
Easy to setup.
Faster than bridge networking.

Creating MACVLAN network:

Example:

Host IP: 188.40.102.103

Host subnet: 188.40.76.0

Host Mask: 26

Host gateway: 188.40.76.1

Host ethernet interface: eth0

Above command creates network named ‘macvlan_bridge’

Running a container using ‘macvlan_bridge’ network:

Example:

Host contains multiple publicly accessible IP addresses with MAC addresses.

Host additional IP/MAC: 88.99.102.115/00:50:56:00:60:42

Above command runs nginx container with ip ‘88.99.102.115’ attached to this container, you can verify by hitting ‘88.99.102.115’ where you will be welcomed with nginx page.

This way overall network setup will become clear and easy to handle.

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In this article we will discuss how to get ip address assigned to a running docker container from host using docker inspect command.

docker inspect

Docker command line interface provides a command docker inspect to get the low level information about the docker container i.e.
It returns a lot of low level information about the running docker container in JSON format. In that information we get the assigned IP address of the container too.

But, apart from IP address it returns too much information. If we want some specific information then we can use the –format (-f) flag. It can format the JSON output of docker inspect using the given Go template.

Let’s see some examples, Command and conquer 3 mods.

Suppose we have a running docker container i.e.
List of running containers,

Get Docker container IP address from the Host

Get a Docker container IP address from host using Container Name
It will return the IP address of container with name hungry_williamson i.e.
Using a GO template we filtered the output of docker inspect command to fetch IP address only.

Get a Docker container IP address from host using container ID

Similarly we can fetch the IP address using container ID instead of name in previous command. Like this,
It will return the IP address of container with name 1caec9cde092 i.e.
So, this way we got the IP address of a docker container from host. But what if we have 100 running containers and we want their IP addresses along with name ?

Get IP Address and names of ALL the running containers from host

Suppose we have 3 running containers,
Now we want to fetch the name and IP address of all the running containers. Let’s see how to do that,

To get the IDs of all running containers use following command
It will return a list of all the running containers i.e.
Now let’s pass this list of container IDs to docker inspect command and fetch name of containers only i.e.
It will return the name of all the running containers i.e.
Now we can also get the Name and IP of all running containers too using inspect command i.e.
It will return the name and IP address of all the running containers i.e.
docker inspect provides many information regarding a container. Here we fetched only couple of fields using GO template.

Main information provided by docker inspect includes, configurations, state, NetworkSettings and many other sections.

Get Complete Network Settings of a docker container

To get the complete network settings of a running docker container using inspect command use this,
For example,
It will display network settings like this,
Now you can use this command to fetch information of other sections too . These section can be,

Config
GraphDriver
Mounts
HostConfig
Name
LogPath
State
Created
etc.

Replace the <SectionName> in below command to get the detailed information about that section.
You can also directly fetch some specific information inside the section. For example, let’s fetch Image name inside the Config section,

Docker For Mac Get Ip Free

Get Image name from the container ID,
Output:
Similarly, to fetch the complete configuration details use,
Output:
Complete output of docker inspect command is,
Output :