当我把Docker版本更新到0.8.0后,我在输入sudo Docker version时得到了一个错误消息:

Client version: 0.8.0
Go version (client): go1.2
Git commit (client): cc3a8c8
2014/02/19 12:54:16 Can't connect to docker daemon. Is 'docker -d' running on this host?

我按照说明,输入命令sudo docker -d,我得到了这个:

[/var/lib/docker|2462000b] +job initserver()
[/var/lib/docker|2462000b.initserver()] Creating server
open /var/lib/docker/aufs/layers/cf2414da53f9bcfaa48bc3d58360d7f1cfd3784e4fe51fbef95197709dfc285d: no such file or directory[/var/lib/docker|2462000b] -job initserver() = ERR (1)
2014/02/19 12:55:57 initserver: open /var/lib/docker/aufs/layers/cf2414da53f9bcfaa48bc3d58360d7f1cfd3784e4fe51fbef95197709dfc285d: no such file or directory

我怎么解决这个问题?


当前回答

为了解决这个问题,我必须启用docker服务:

sudo systemctl enable /usr/lib/systemd/system/docker.service

其他回答

为了解决这个问题,我必须启用docker服务:

sudo systemctl enable /usr/lib/systemd/system/docker.service

我知道这篇文章里已经有很多答案了。只是我想补充一个简单的答案,解决上述问题。

sudo systemctl start docker

运行上面的命令,它将启动所有与docker相关的线程/服务。

检查你是否正在使用Docker Machine:)

运行docker-machine env default就可以了。

因为根据文档:

Docker Machine is a tool that lets you install Docker Engine on virtual hosts, and manage the hosts with docker-machine commands. You can use Machine to create Docker hosts on your local Mac or Windows box, on your company network, in your data center, or on cloud providers like AWS or Digital Ocean. Using docker-machine commands, you can start, inspect, stop, and restart a managed host, upgrade the Docker client and daemon, and configure a Docker client to talk to your host. Point the Machine CLI at a running, managed host, and you can run docker commands directly on that host. For example, run docker-machine env default to point to a host called default, follow on-screen instructions to complete env setup, and run docker ps, docker run hello-world, and so forth.

https://docs.docker.com/machine/overview/

以下Docker的DOC站点:以非root用户管理Docker

1)创建Docker组

sudo groupadd docker 

2)使用户属于docker组,以获得docker组的权限。

sudo usermod -aG docker $USER

检查shell是否设置了DOCKER_HOST环境变量。

env | grep DOCKER_HOST

如果它存在,

unset DOCKER_HOST

然后这应该工作:

docker run hello-world

当您不在docker组中时,通常会发生这种情况。您可以通过以下方式将自己添加到docker组:

sudo usermod -aG docker yourusername

or

sudo usermod -aG docker $(whoami)

在此之后,您需要注销并重新登录到服务器。

或者,您可以sudo每个Docker命令。