Docker 正在运行，但 Pycharm 无法连接到 Docker 守护进程

Question

我是 docker 新手，没有在这里找到问题来回答我遇到的问题。

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我正在尝试使用 Pycharm 运行 dockerfile，以便调试 docker 内的某些程序。\n我在 pycharm 中打开了 dockerfile，并创建了一个用于运行 dockerfile 的配置。\n运行该程序会导致错误消息“服务”选项卡：

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

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在 Google 搜索问题后，我发现了这个线程：Cannot connect to the Docker daemon at unix:/var/run/docker.sock。docker 守护进程是否正在运行？

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这说我应该跑步sudo dockerd。在出现一些错误后，我完全卸载了 docker，然后再次安装。\n安装后我运行：

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systemctl status docker\n

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输出是：

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\xe2\x97\x8f docker.service - Docker Application Container Engine\n   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)\n   Active: active (running) since Sat 2020-09-26 15:06:22 IDT; 59s ago\n     Docs: https://docs.docker.com\n Main PID: 24888 (dockerd)\n    Tasks: 21\n   CGroup: /system.slice/docker.service\n           \xe2\x94\x94\xe2\x94\x8024888 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock\n

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所以我使用它停止了sudo service docker stop\n我再次运行systemctl status docker，它确实停止了：

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\xe2\x97\x8f docker.service - Docker Application Container Engine\n   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)\n   Active: inactive (dead) since Sat 2020-09-26 15:09:29 IDT; 16s ago\n     Docs: https://docs.docker.com\n  Process: 24888 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=exited, status=0/SUCCES\n Main PID: 24888 (code=exited, status=0/SUCCESS)\n\nSep 26 15:06:21 DL-2 dockerd[24888]: time="2020-09-26T15:06:21.919021419+03:00" level=info msg="Loading containers: done."\nSep 26 15:06:22 DL-2 dockerd[24888]: time="2020-09-26T15:06:22.265996712+03:00" level=info msg="Docker daemon" commit=4484c46d9\nSep 26 15:06:22 DL-2 dockerd[24888]: time="2020-09-26T15:06:22.266253446+03:00" level=info msg="Daemon has completed initializa\nSep 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\nSep 26 15:06:22 DL-2 systemd[1]: Started Docker Application Container Engine.\nSep 26 15:09:29 DL-2 systemd[1]: Stopping Docker Application Container Engine...\nSep 26 15:09:29 DL-2 dockerd[24888]: time="2020-09-26T15:09:29.427473508+03:00" level=info msg="Processing signal \'terminated\'"\nSep 26 15:09:29 DL-2 dockerd[24888]: time="2020-09-26T15:09:29.428067483+03:00" level=info msg="stopping event stream following\nSep 26 15:09:29 DL-2 dockerd[24888]: time="2020-09-26T15:09:29.428325869+03:00" level=info msg="Daemon shutdown complete"\nSep 26 15:09:29 DL-2 systemd[1]: Stopped Docker Application Container Engine.\n

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所以我跑了sudo dockerd，它似乎运行良好：

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INFO[2020-09-26T15:11:03.918879915+03:00] Starting up                                  \nINFO[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 \nINFO[2020-09-26T15:11:03.919768789+03:00] parsed scheme: "unix"                         module=grpc\nINFO[2020-09-26T15:11:03.919779317+03:00] scheme "unix" not registered, fallback to default scheme  module=grpc\nINFO[2020-09-26T15:11:03.919792653+03:00] ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock 0  <nil>}] <nil>}  module=grpc\nINFO[2020-09-26T15:11:03.919798154+03:00] ClientConn switching balancer to "pick_first"  module=grpc\nINFO[2020-09-26T15:11:03.920399082+03:00] parsed scheme: "unix"                         module=grpc\nINFO[2020-09-26T15:11:03.920409757+03:00] scheme "unix" not registered, fallback to default scheme  module=grpc\nINFO[2020-09-26T15:11:03.920418642+03:00] ccResolverWrapper: sending update to cc: {[{unix:///run/containerd/containerd.sock 0  <nil>}] <nil>}  module=grpc\nINFO[2020-09-26T15:11:03.920423441+03:00] ClientConn switching balancer to "pick_first"  module=grpc\nINFO[2020-09-26T15:11:04.050458554+03:00] [graphdriver] using prior storage driver: overlay2 \nWARN[2020-09-26T15:11:04.212728085+03:00] Your kernel does not support swap memory limit \nWARN[2020-09-26T15:11:04.212780116+03:00] Your kernel does not support cgroup rt period \nWARN[2020-09-26T15:11:04.212798165+03:00] Your kernel does not support cgroup rt runtime \nWARN[2020-09-26T15:11:04.212812782+03:00] Your kernel does not support cgroup blkio weight \nWARN[2020-09-26T15:11:04.212830211+03:00] Your kernel does not support cgroup blkio weight_device \nINFO[2020-09-26T15:11:04.213206856+03:00] Loading containers: start.                   \nINFO[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 \nINFO[2020-09-26T15:11:04.985878757+03:00] Loading containers: done.                    \nINFO[2020-09-26T15:11:05.259805773+03:00] Docker daemon                                 commit=4484c46d9d graphdriver(s)=overlay2 version=19.03.13\nINFO[2020-09-26T15:11:05.259975115+03:00] Daemon has completed initialization          \nINFO[2020-09-26T15:11:05.418371093+03:00] API listen on /var/run/docker.sock           \n

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但再次运行 dockerfile 会导致同样的错误。我很不知道为什么会发生这种情况，所以我将不胜感激任何反馈。

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如果需要更多信息，请告诉我，我很乐意提供。\n提前致谢:)

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Answer 1

在我的 Mac 上的 Docker 桌面应用程序中，在“设置”->“高级”下，我必须启用Enable default Docker socket (Requires password)选项，然后才能从 PyCharm 进行连接。

Answer 2

您可以运行 docker 命令，例如docker images不使用docker 命令sudo吗？如果没有，您应该运行sudo usermod -aG docker $USER，然后可以docker以非 root 用户身份使用命令（https://docs.docker.com/engine/install/linux-postinstall/）。我不确定它是否能解决你的问题。

Answer 3

对于扁平封装用户 - 在 Pop!_OS 上测试：

如果您将 PyCharm / PhpStorm / IntelliJ 安装为扁平包映像（例如通过 PoP!_Shop）：

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

根据使用的版本/风格更改后面的jetbrains产品名称（此处：PyCharm-Community）。