dockerd ignores the --default-address-pool option #40388
Description
Description
dockerd ignores the --default-address-pool option.
Steps to reproduce the issue:
$ cat empty.json
{}
$ cat daemon.json
{
"default-address-pools": [ { "base": "10.123.0.0/16", "size": 24 } ]
}
$ dockerd --config-file daemon.json
$ while true; do docker network create n1 > /dev/null; docker network inspect n1 --format '{{json .}}' | jq .IPAM.Config[0].Subnet; docker network rm n1 > /dev/null; done
"10.123.1.0/24"
"10.123.2.0/24"
"10.123.3.0/24"
"10.123.4.0/24"
"10.123.5.0/24"
"10.123.6.0/24"
"10.123.7.0/24"
...
$ dockerd --default-address-pool 'base=10.123.0.0,size=24' --config-file empty.json
$ while true; do docker network create n1 > /dev/null; docker network inspect n1 --format '{{json .}}' | jq .IPAM.Config[0].Subnet; docker network rm n1 > /dev/null; done
"172.17.0.0/16"
"172.18.0.0/16"
"172.19.0.0/16"
"172.20.0.0/16"
"172.21.0.0/16"
"172.22.0.0/16"
"172.23.0.0/16"
"172.24.0.0/16"
"172.25.0.0/16"
"172.26.0.0/16"
"172.27.0.0/16"
"172.28.0.0/16"
"172.29.0.0/16"
"172.30.0.0/16"
"172.31.0.0/16"
"192.168.0.0/20"
"192.168.16.0/20"
"192.168.32.0/20"
"192.168.48.0/20"
"192.168.64.0/20"
"192.168.80.0/20"
"192.168.96.0/20"
"192.168.112.0/20"
"192.168.128.0/20"
"192.168.144.0/20"
"192.168.160.0/20"
"192.168.176.0/20"
"192.168.192.0/20"
"192.168.208.0/20"
"192.168.224.0/20"
"192.168.240.0/20"
"172.17.0.0/16"
...
Describe the results you received:
docker network create uses "172..0.0/16" and "192.168..0/20" networks.
Describe the results you expected:
docker network create should use "10.123.*.0/24" networks, which are specified by the --default-address-pool option.
Additional information you deem important (e.g. issue happens only occasionally):
$ dockerd --help
...
--default-address-pool pool-options Default address pools for node specific local networks
...
Can be confusing, because the name of the option in the daemon.json is plurar and the option on the CLI is singular.
Output of docker version:
Client: Docker Engine - Community
Version: 19.03.5
API version: 1.40
Go version: go1.12.12
Git commit: 633a0ea838
Built: Wed Nov 13 07:29:52 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.5
API version: 1.40 (minimum version 1.12)
Go version: go1.12.12
Git commit: 633a0ea838
Built: Wed Nov 13 07:28:22 2019
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.10
GitCommit: b34a5c8af56e510852c35414db4c1f4fa6172339
runc:
Version: 1.0.0-rc8+dev
GitCommit: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
docker-init:
Version: 0.18.0
GitCommit: fec3683
Output of docker info:
Client:
Debug Mode: false
Server:
Containers: 3
Running: 3
Paused: 0
Stopped: 0
Images: 6
Server Version: 19.03.5
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339
runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
init version: fec3683
Security Options:
apparmor
seccomp
Profile: default
Kernel Version: 4.15.0-74-generic
Operating System: Ubuntu 18.04.3 LTS
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 15.64GiB
Name: REDACTED
ID: SF2M:PRNH:SXW4:2MR2:WNUL:6JIA:UQUA:7BAW:Q4CW:GE3G:YL3V:V75F
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: true
WARNING: No swap limit support```
**Additional environment details (AWS, VirtualBox, physical, etc.):**