Description

I have physical machine with Gentoo as host OS for Docker containers. I have compiled kernel using instructions on page https://wiki.gentoo.org/wiki/Docker#Kernel and I have installed Docker from Gentoo repository (see on the section Additional environment details (AWS, VirtualBox, physical, etc.)). I have set following USE flags:

>=app-emulation/docker-17.03.2 pkcs11 overlay device-mapper container-init btrfs aufs

I have emerged Docker and added it to boot level default in OpenRC init system. After compiling kernel and Docker I wanted to check if Docker is working so I typed docker info in terminal and I got error. I have decided to check what is wrong and I need your help with solving issue.

Steps to reproduce the issue:

1. Issue the docker version command.
2. Try get Docker system-wide informations using docker info.
3. Check Docker daemon status.
4. Check Docker logs.

Describe the results you received:
In the output of docker version (see below) you can see error Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?. The same message appears if I try get Docker system-wide informations. The same error appears if I try run the same command prepending by sudo, so this error applies to daemon. I tried to check if there a mistake in Docker daemon privileges. Based on these messages I am able to say that maybe Docker daemon not running. I checked daemon status to make sure. Docker daemon is crashed. To see the reason, I looked at the logs.

Output of cat /var/log/docker.log:

pecan@tux ~ $ cat /var/log/docker.log 
time="2017-10-07T14:52:13.178261811+02:00" level=info msg="libcontainerd: new containerd process, pid: 32311" 
time="2017-10-07T14:52:14.434232306+02:00" level=info msg="Graph migration to content-addressability took 0.00 seconds" 
time="2017-10-07T14:52:14.434413425+02:00" level=warning msg="Your kernel does not support cgroup blkio weight" 
time="2017-10-07T14:52:14.434423960+02:00" level=warning msg="Your kernel does not support cgroup blkio weight_device" 
time="2017-10-07T14:52:14.434759986+02:00" level=info msg="Loading containers: start." 
time="2017-10-07T14:52:14.437180876+02:00" level=info msg="Firewalld running: false" 
Error starting daemon: Error initializing network controller: list bridge addresses failed: no available network

Describe the results you expected:

docker info should return Docker system-wide informations instead of Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.

Expected output of docker version:

pecan@tux ~ $ docker version
Client:
 Version:      17.03.2-ce
 API version:  1.27
 Go version:   go1.9.1
 Git commit:   f5ec1e2
 Built:        Sat Oct  7 14:50:59 2017
 OS/Arch:      linux/amd64

Additional information you deem important (e.g. issue happens only occasionally):

Output of docker version:

pecan@tux ~ $ docker version
Client:
 Version:      17.03.2-ce
 API version:  1.27
 Go version:   go1.9.1
 Git commit:   f5ec1e2
 Built:        Sat Oct  7 14:50:59 2017
 OS/Arch:      linux/amd64
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Output of docker info:

pecan@tux ~ $ docker info
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Output of sudo docker info:

pecan@tux ~ $ sudo docker info
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Output of sudo service docker status:

pecan@tux ~ $ sudo service docker status
 * status: crashed

Additional environment details (AWS, VirtualBox, physical, etc.):
I am using Gentoo as Host OS for Docker containers. I have compiled kernel using instructions on page https://wiki.gentoo.org/wiki/Docker#Kernel and I have installed Docker from Gentoo repository.

Host system informations:

pecan@tux ~ $ uname -a
Linux tux 4.12.12-gentoo #8 SMP Sat Oct 7 13:58:47 CEST 2017 x86_64 Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz GenuineIntel GNU/Linux

I have disabled iptables and ip6tables because firewall is not actually properly configured. I am connecting to internet through VPN and I am using 8.8.8.8 and 8.8.4.4 DNS providers. I have running Tor and Privoxy daemons and I am using OpenRC init system.