我想迁移到Docker,所以我才刚开始使用它。我已经在VirtualBox Ubuntu 15.10(Wily Werewolf)安装上安装了Docker,然后按照此处的建议,我尝试运行基本的nginx Docker映像:
$ docker run --name mynginx1 -P -d nginx Cannot connect to the Docker daemon. Is the docker daemon running on this host?
因此,我检查了Docker是否正在运行:
$ sudo service docker status ● docker.service - Docker Application Container Engine Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled) Active: active (running) since vr 2015-11-06 08:41:48 CET; 15min ago Docs: https://docs.docker.com Main PID: 7542 (docker) CGroup: /system.slice/docker.service └─7542 /usr/bin/docker daemon -H fd:// nov 06 08:41:47 kramer65-VirtualBox systemd[1]: Starting Docker Application Container Engine... nov 06 08:41:47 kramer65-VirtualBox docker[7542]: time="2015-11-06T08:41:47.900410966+01:00" level=info msg="API ...ock" nov 06 08:41:48 kramer65-VirtualBox docker[7542]: time="2015-11-06T08:41:48.033514149+01:00" level=info msg="Fire...lse" nov 06 08:41:48 kramer65-VirtualBox docker[7542]: time="2015-11-06T08:41:48.141594321+01:00" level=info msg="Defa...ess" nov 06 08:41:48 kramer65-VirtualBox docker[7542]: time="2015-11-06T08:41:48.416294436+01:00" level=warning msg="Y...it." nov 06 08:41:48 kramer65-VirtualBox docker[7542]: time="2015-11-06T08:41:48.565507576+01:00" level=info msg="Load...rt." nov 06 08:41:48 kramer65-VirtualBox docker[7542]: time="2015-11-06T08:41:48.567907022+01:00" level=info msg="Load...ne." nov 06 08:41:48 kramer65-VirtualBox docker[7542]: time="2015-11-06T08:41:48.567945214+01:00" level=info msg="Daem...ion" nov 06 08:41:48 kramer65-VirtualBox docker[7542]: time="2015-11-06T08:41:48.567969891+01:00" level=info msg="Dock....9.0 nov 06 08:41:48 kramer65-VirtualBox systemd[1]: Started Docker Application Container Engine. Hint: Some lines were ellipsized, use -l to show in full.
这表明Docker守护程序实际上已经在运行,但是请确保我只是手动启动了Docker守护程序:
$ sudo docker daemon INFO[0000] API listen on /var/run/docker.sock INFO[0000] [graphdriver] using prior storage driver "aufs" INFO[0000] Firewalld running: false INFO[0000] Default bridge (docker0) is assigned with an IP address XXX.XX.X.X/XX. Daemon option --bip can be used to set a preferred IP address WARN[0000] Your kernel does not support swap memory limit. INFO[0000] Loading containers: start. INFO[0000] Loading containers: done. INFO[0000] Daemon has completed initialization INFO[0000] Docker daemon commit=76d6bc9 execdriver=native-0.2 graphdriver=aufs version=1.9.0
然后,我尝试再次运行该映像,但结果相同:
我尝试sudo’ing命令,但无济于事。我在这里做错了什么?
您需要按如下方式将当前用户添加到docker组:
sudo usermod -aG docker $(whoami)
然后 注销并再次登录 系统或重新启动系统。测试者docker version
docker version
有关更多信息,如何安装docker- engine请遵循docker文档