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
如果创建一个docker组并将你的用户添加到其中不起作用(最好的解决方案，在前面的回答中描述过)，那么这个是第二好的选择:
sudo chown $USER /var/run/docker.sock
它所做的是改变docker的所有权。Sock文件到您的用户。
注意:使用chmod 666是一个非常糟糕的做法，因为它给了几乎所有人访问和修改docker的权限。袜子文件。
其他回答
一个简单的破解方法就是以“超级用户”的身份执行。
要访问超级用户或root用户，请执行以下命令:
在user@computer:
$sudo su
输入密码后，你将进入root@computer:
$docker run hello-world
将当前用户添加到docker组
sudo usermod -aG docker $USER
修改docker套接字的权限，使其能够连接 到docker守护进程/var/run/docker.sock
sudo chmod 666 /var/run/docker.sock
在Centos上安装Docker后。在运行下面的命令时，我得到下面的错误。
[centos@aiops-dev-cassandra3 ~]$ 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 ~]$
我用命令解决了这个错误:
$ sudo chmod 666 /var/run/docker.sock
安装docker后，创建“docker”组并将用户添加到其中，编辑docker服务单元文件:
sudo nano /usr/lib/systemd/system/docker.service
在部分[Service]中添加两行:
SupplementaryGroups=docker
ExecStartPost=/bin/chmod 666 /var/run/docker.sock
保存文件(Ctrl-X, y, Enter)
运行并启用Docker服务:
sudo systemctl daemon-reload
sudo systemctl start docker
sudo systemctl enable docker
