我在装有Ubuntu操作系统的机器上安装了Docker。 当我跑步时:
sudo docker run hello-world
一切都很好，但是我想隐藏sudo命令以使该命令更短。 如果我写的命令没有sudo
docker run hello-world
显示如下:
docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.35/containers/create: dial unix /var/run/docker.sock: connect: permission denied. See 'docker run --help'.
当我试图跑步时，同样的情况也会发生:
docker-compose up
我该如何解决这个问题?
当前回答
在Centos上安装Docker后。在运行下面的命令时，我得到下面的错误。
[centos@aiops-dev-cassandra3 ~]$ docker run hello-world
docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.soc k/v1.40/containers/create: dial unix /var/run/docker.sock: connect: permission denied.
See 'docker run --help'.
修改docker.socket的Group和Permission
[centos@aiops-dev-cassandra3 ~]$ ls -l /lib/systemd/system/docker.socket
-rw-r--r--. 1 root root 197 Nov 13 07:25 /lib/systemd/system/docker.socket
[centos@aiops-dev-cassandra3 ~]$ sudo chgrp docker /lib/systemd/system/docker.socket
[centos@aiops-dev-cassandra3 ~]$ sudo chmod 666 /var/run/docker.sock
[centos@aiops-dev-cassandra3 ~]$ ls -lrth /var/run/docker.sock
srw-rw-rw-. 1 root docker 0 Nov 20 11:59 /var/run/docker.sock
[centos@aiops-dev-cassandra3 ~]$
使用以下docker命令进行验证
[centos@aiops-dev-cassandra3 ~]$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:c3b4ada4687bbaa170745b3e4dd8ac3f194ca95b2d0518b417fb47e5879d9b5f
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
[centos@aiops-dev-cassandra3 ~]$
其他回答
Lightdm和kwallet附带了一个bug，在登录时似乎无法通过补充组。为了解决这个问题，除了sudo usermod -aG docker $USER，我还必须注释掉
auth optional pam_kwallet.so
auth optional pam_kwallet5.so
to
#auth optional pam_kwallet.so
#auth optional pam_kwallet5.so
在/etc/pam.D /lightdm重启之前，对于docker-group实际有效果。
Bug: https://bugs.launchpad.net/lightdm/+bug/1781418和这里:https://bugzilla.redhat.com/show_bug.cgi?id=1581495
只要打开终端，输入这个命令
sudo chmod 666 /var/run/docker.sock
将当前用户添加到docker组
sudo usermod -aG docker $USER
修改docker套接字的权限，使其能够连接 到docker守护进程/var/run/docker.sock
sudo chmod 666 /var/run/docker.sock
修复Docker问题:(权限被拒绝)
如果docker组不存在，请创建docker组:sudo groupadd docker 查看可用系统中的超级用户数量:grep -Po '^sudo.+:\K。* $的所属 在linux命令shell中导出用户:Export user = demuser 将用户添加到docker组:sudo usermod -aG docker $ user 执行以下命令/登录或注销 检查docker运行是否正常:docker run hello-world 如果仍然得到错误，重新启动:Reboot
如果不成功，执行以下命令:
Sudo chmod 660 /var/run/docker.sock
Ubuntu 21.04 systemd套接字所有权
让我先说明一下，这是一个非常适合我在本地开发期间的解决方案，我在这里搜索ubuntu docker权限错误，所以我就把这个留在这里。
unix套接字不是我的，所以我学会了。
sudo chown $(whoami):$(whoami) /var/run/docker.sock
对于您的开发环境，另一个更持久的解决方案是修改unix套接字创建的用户所有权。这将给你的用户所有权，所以它将在重启之间坚持:
sudo nano /etc/systemd/system/sockets.target.wants/docker.socket
docker.socket:
[Unit]
Description=Docker Socket for the API
[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=YOUR_USERNAME_HERE
SocketGroup=docker
[Install]
WantedBy=sockets.target
