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

为了解决这个问题,我搜索了我的docker和docker-compose安装在哪里。在我的例子中,docker安装在/usr/bin/docker, docker-compose安装在/usr/local/bin/docker-compose路径下。然后,我在我的终端中这样写:

码头工人:

sudo chmod +x /usr/bin/docker

docker-compose:

sudo chmod +x /usr/local/bin/docker-compose

现在我不需要在我的命令docker中写入单词sudo

/***********************************************************************/

勘误:

这个问题的最佳解决方案由@mkasberg评论。我引用评论:

这可能会起作用,你可能会遇到问题。此外,这也是一个安全漏洞。你最好把自己加入docker组,就像文档中说的那样。sudo groupadd docker, sudo usermod -aG docker $USER。 文档:https://docs.docker.com/install/linux/linux-postinstall/

其他回答

我用命令解决了这个错误:

$ 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 ~]$

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

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

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