无法使用文件/etc/docker/daemon.json配置Docker守护程序：EOF

Question

我是docker的新手，无法理解这些错误。所以，如果需要更多信息，请告诉我。

`$ docker --version`
Docker version 1.12.6, build 88a4867/1.12.6

`$ docker info`
 Cannot connect to the Docker daemon. Is the docker daemon running on this host?

`$sudo dockerd`

FATA[0000] unable to configure the Docker daemon with file /etc/docker/daemon.json: EOF

`$sudo systemctl start docker`

Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.

`$sudo systemctl status docker.service -l`

● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2017-07-26 14:30:21 EDT; 8min ago
  Docs: http://docs.docker.com

  Process: 5835 ExecStart=/usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --authorization-plugin=rhel-push-plugin --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY (code=exited, status=1/FAILURE)
 Main PID: 5835 (code=exited, status=1/FAILURE)

Jul 26 14:30:21: Starting Docker Application Container Engine...
Jul 26 14:30:21 dockerd-current[5835]: time="2017-07-26T14:30:21-04:00" level=fatal msg="unable to configure the Docker daemon with file /etc/docker/daemon.json: EOF\n"
Jul 26 14:30:21 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Jul 26 14:30:21 systemd[1]: Failed to start Docker Application Container Engine.
Jul 26 14:30:21 systemd[1]: Unit docker.service entered failed state.
Jul 26 14:30:21 systemd[1]: docker.service failed.

如果我需要检查其他任何内容，请告诉我。

Answer 1

文件/etc/docker/daemon.json不应该存在或者如果存在，那么它应该具有有效的JSON对象。空白文件会产生错误。删除文件或者如果您想要一个空白文件，请使用以下内容

{
}

这将创建一个空白的json对象

Answer 2

我有同样的问题。但我编辑了文件/etc/docker/daemon.json并添加了一些选项。如果带有选项的字符串不是最后一个，则必须以逗号字符（，）结尾。