How to configure IP range for docker container in /etc/aziot/config.toml file

Question

Hi,

In IoT Edge device, I want to configure the IP range for all docker containers manage by IoT Edge Runtime (v1.4.20).

IoT Edge Runtime creates docker network with name "azure-iot-edge" and provide the default IP range like 172.19.0.0/16. But I need to change it to 192.168.0.0/16 range as it is conflicting with other network range.

This link explains the configuration in YAML file, but latest IoT Edge Runtime uses toml config and I did not able to find an option TOML configuration.

Many thanks in advance!

Answer 1

We defined in the file /etc/docker/daemon.json our own default-address-pool like below:

"default-address-pools": [
  {
    "base": "172.17.17.0/24",
    "size": 28
  }
]

Then the "azure-iot-edge" network got the next pool from the default address pool (docker network inspect azure-iot-edge):

"Name": "azure-iot-edge",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
  "Driver": "default",
  "Options": null,
  "Config": [
    {
      "Subnet": "172.17.17.16/28",
      "Gateway": "172.17.17.17"
    }
  ]
},

There might also be another option: create your own network within docker and refer to it in the /etc/aziot/config.toml file as below:

[moby_runtime]
uri = "unix:///var/run/docker.sock"
network = "<your-docker-network>"