Docker正在运行，但Pycharm无法连接到Docker守护程序

Question

我刚接触docker，还没有找到一个问题来回答我遇到的问题。

我正在尝试使用Pycharm来运行dockerfile，以便在docker中调试某些程序。我在pycharm中打开了dockerfile，并创建了运行dockerfile的配置。运行该程序会在“services”选项卡下显示一条错误消息：

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

在我用谷歌搜索这个问题之后，我找到了这个帖子：Cannot connect to the Docker daemon at unix:/var/run/docker.sock. Is the docker daemon running?

也就是说我应该运行sudo dockerd。在一些bug之后，我完全卸载了docker，并重新安装了它。安装完成后，我运行：

systemctl status docker

输出结果为：

● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2020-09-26 15:06:22 IDT; 59s ago
     Docs: https://docs.docker.com
 Main PID: 24888 (dockerd)
    Tasks: 21
   CGroup: /system.slice/docker.service
           └─24888 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

所以我使用sudo service docker stop停止了它，我再次运行systemctl status docker，它确实被停止了：

● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since Sat 2020-09-26 15:09:29 IDT; 16s ago
     Docs: https://docs.docker.com
  Process: 24888 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=exited, status=0/SUCCES
 Main PID: 24888 (code=exited, status=0/SUCCESS)

Sep 26 15:06:21 DL-2 dockerd[24888]: time="2020-09-26T15:06:21.919021419+03:00" level=info msg="Loading containers: done."
Sep 26 15:06:22 DL-2 dockerd[24888]: time="2020-09-26T15:06:22.265996712+03:00" level=info msg="Docker daemon" commit=4484c46d9
Sep 26 15:06:22 DL-2 dockerd[24888]: time="2020-09-26T15:06:22.266253446+03:00" level=info msg="Daemon has completed initializa
Sep 26 15:06:22 DL-2 dockerd[24888]: time="2020-09-26T15:06:22.642407513+03:00" level=info msg="API listen on /var/run/docker.s
Sep 26 15:06:22 DL-2 systemd[1]: Started Docker Application Container Engine.
Sep 26 15:09:29 DL-2 systemd[1]: Stopping Docker Application Container Engine...
Sep 26 15:09:29 DL-2 dockerd[24888]: time="2020-09-26T15:09:29.427473508+03:00" level=info msg="Processing signal 'terminated'"
Sep 26 15:09:29 DL-2 dockerd[24888]: time="2020-09-26T15:09:29.428067483+03:00" level=info msg="stopping event stream following
Sep 26 15:09:29 DL-2 dockerd[24888]: time="2020-09-26T15:09:29.428325869+03:00" level=info msg="Daemon shutdown complete"
Sep 26 15:09:29 DL-2 systemd[1]: Stopped Docker Application Container Engine.

所以我运行了sudo dockerd，它看起来运行得很好：

INFO[2020-09-26T15:11:03.918879915+03:00] Starting up                                  
INFO[2020-09-26T15:11:03.919388821+03:00] detected 127.0.0.53 nameserver, assuming systemd-resolved, so using resolv.conf: /run/systemd/resolve/resolv.conf 
INFO[2020-09-26T15:11:03.919768789+03:00] parsed scheme: "unix"                         module=grpc
INFO[2020-09-26T15:11:03.919779317+03:00] scheme "unix" not registered, fallback to default scheme  module=grpc
INFO[2020-09-26T15:11:03.919792653+03:00] ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock 0  <nil>}] <nil>}  module=grpc
INFO[2020-09-26T15:11:03.919798154+03:00] ClientConn switching balancer to "pick_first"  module=grpc
INFO[2020-09-26T15:11:03.920399082+03:00] parsed scheme: "unix"                         module=grpc
INFO[2020-09-26T15:11:03.920409757+03:00] scheme "unix" not registered, fallback to default scheme  module=grpc
INFO[2020-09-26T15:11:03.920418642+03:00] ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock 0  <nil>}] <nil>}  module=grpc
INFO[2020-09-26T15:11:03.920423441+03:00] ClientConn switching balancer to "pick_first"  module=grpc
INFO[2020-09-26T15:11:04.050458554+03:00] [graphdriver] using prior storage driver: overlay2 
WARN[2020-09-26T15:11:04.212728085+03:00] Your kernel does not support swap memory limit 
WARN[2020-09-26T15:11:04.212780116+03:00] Your kernel does not support cgroup rt period 
WARN[2020-09-26T15:11:04.212798165+03:00] Your kernel does not support cgroup rt runtime 
WARN[2020-09-26T15:11:04.212812782+03:00] Your kernel does not support cgroup blkio weight 
WARN[2020-09-26T15:11:04.212830211+03:00] Your kernel does not support cgroup blkio weight_device 
INFO[2020-09-26T15:11:04.213206856+03:00] Loading containers: start.                   
INFO[2020-09-26T15:11:04.547434099+03:00] Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be used to set a preferred IP address 
INFO[2020-09-26T15:11:04.985878757+03:00] Loading containers: done.                    
INFO[2020-09-26T15:11:05.259805773+03:00] Docker daemon                                 commit=4484c46d9d graphdriver(s)=overlay2 version=19.03.13
INFO[2020-09-26T15:11:05.259975115+03:00] Daemon has completed initialization          
INFO[2020-09-26T15:11:05.418371093+03:00] API listen on /var/run/docker.sock           

但是再次运行dockerfile会导致相同的错误。我完全不知道为什么会发生这种情况，所以我希望得到任何反馈。

如果需要更多信息，请让我知道，我很乐意提供。提前感谢:)

Answer 1

你能在没有sudo的情况下运行诸如docker images这样的docker命令吗？如果没有，您应该运行sudo usermod -aG docker $USER，然后您可以以非根用户(https://docs.docker.com/engine/install/linux-postinstall/)身份使用docker命令。我不确定它是否能解决你的问题。

Answer 2

对于流行音乐！_OS用户：

如果您通过PoP!_Shop将PyCharm / PhpStorm / IntelliJ安装为flatpack镜像：

flatpak override --user --filesystem=/run/docker.sock com.jetbrains.PyCharm-Community

根据使用的版本/风格更改jetbrains的尾随产品名称(此处:PyCharm-Community)。

Answer 3

如果其他建议没有帮助，只需重新启动计算机/笔记本电脑。它帮助了我:)