Raspberry Pi 3上的Ubuntu Core 16無法連接到Docker守護進程

Question

設置完新鮮的Ubuntu Core 16 Raspberry Pi機器後。 使用來自Ubuntu Core的圖像web page。

並在其上安裝泊塢窗帶止：

snap install docker 

我不能夠使用泊塢窗，我得到一個錯誤：

Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? 

泊塢窗服務狀態是無效的（死）：

sudo systemctl status snap.docker.dockerd.service 

snap.docker.dockerd.service - Service for snap application docker.dockerd 
Loaded: loaded (/etc/systemd/system/snap.docker.dockerd.service; enabled; vendor preset: enabled) 
Active: inactive (dead) (Result: exit-code) since Wed 2017-05-03 10:30:55 UTC; 30min ago 
Process: 1975 ExecStart=/usr/bin/snap run docker.dockerd (code=exited, status=126) 
Main PID: 1975 (code=exited, status=126) 

May 03 10:30:54 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Unit entered failed state. 
May 03 10:30:54 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Failed with result 'exit-code'. 
May 03 10:30:55 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Service hold-off time over, scheduling restart. 
May 03 10:30:55 localhost.localdomain systemd[1]: Stopped Service for snap application docker.dockerd. 
May 03 10:30:55 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Start request repeated too quickly. 
May 03 10:30:55 localhost.localdomain systemd[1]: Failed to start Service for snap application docker.dockerd. 

重新啓動碼頭服務：

sudo systemctl stop snap.docker.dockerd.service 
sudo systemctl start snap.docker.dockerd.service 

沒有幫助。

泊塢版本輸出：

Client: 
Version:  1.13.1 
API version: 1.26 
Go version: go1.7.5 
Git commit: -snap-a2d8d8c 
Built:  Fri Apr 21 08:56:55 2017 
OS/Arch:  linux/arm 
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? 

的搬運工捕捉連接：

snap interfaces |grep docker 

:docker-support   docker:privileged,docker:support 
:firewall-control   docker 
:network     docker 
:network-bind    docker 
docker:docker-daemon  docker:docker-cli 
-       docker:account-control 
-       docker:home 

有沒有正常啓動碼頭工人守護進程所需的任何額外的步驟？

UPD：碼頭工人服務日誌

sudo journalctl -u snap.docker.dockerd.service -f 

-- Logs begin at Wed 2017-05-03 15:56:02 UTC. -- 
May 03 16:12:58 localhost.localdomain systemd[1]: Stopped Service for snap application docker.dockerd. 
May 03 16:12:58 localhost.localdomain systemd[1]: Started Service for snap application docker.dockerd. 
May 03 16:12:59 localhost.localdomain snap[1697]: /snap/docker/91/bin/dockerd-wrapper: 23: /snap/docker/91/bin/dockerd-wrapper: useradd: Permission denied 
May 03 16:12:59 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Main process exited, code=exited, status=126/n/a 
May 03 16:12:59 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Unit entered failed state. 
May 03 16:12:59 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Failed with result 'exit-code'. 
May 03 16:12:59 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Service hold-off time over, scheduling restart. 
May 03 16:12:59 localhost.localdomain systemd[1]: Stopped Service for snap application docker.dockerd. 
May 03 16:12:59 localhost.localdomain systemd[1]: snap.docker.dockerd.service: Start request repeated too quickly. 
May 03 16:12:59 localhost.localdomain systemd[1]: Failed to start Service for snap application docker.dockerd. 

Answer 1

我有同樣的問題，因爲你，但有它在執行給定this post的命令後再次合作。

這些命令：

$ sudo snap connect docker:account-control :account-control 
$ sudo snap connect docker:home :home 
$ snap disable docker && snap enable docker 
$ newgrp docker-snap