在Docker守护程序中初始化网络控制器时发生错误。

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在Docker守护程序中初始化网络控制器时发生错误。

我正在尝试在一台安装了OracleLinux 6的虚拟服务器上安装Docker,按照官方文档的步骤进行操作。我已经将内核更新到uekr 4版本。

这是我的Docker版本:

#docker version
 Client:
 Version:      1.12.3
 API version:  1.24
 Go version:   go1.6.3
 Git commit:   6b644ec
 Built:
 OS/Arch:      linux/amd64
无法连接到Docker守护程序。Docker守护程序是否在此主机上运行?

当我启动守护程序时,它显示OK,但立即关闭。

#service docker start
Starting docker:        .                                  [  OK  ]
#service docker status
docker dead but subsys locked

这是日志:

\nWed Nov 23 07:53:00 GMT 2016\n
time="2016-11-23T07:53:00.610036664Z" level=info msg="libcontainerd: new containerd process, pid: 5114"
time="2016-11-23T07:53:00.649075962Z" level=warning msg="containerd: low RLIMIT_NOFILE changing to max" current=1024 max=4096
time="2016-11-23T07:53:01.690428304Z" level=warning msg="devmapper: Usage of loopback devices is strongly discouraged for production use. Please use `--storage-opt dm.thinpooldev` or use `man docker` to refer to dm.thinpooldev section."
time="2016-11-23T07:53:01.766503952Z" level=warning msg="devmapper: Base device already exists and has filesystem ext4 on it. User specified filesystem  will be ignored."
time="2016-11-23T07:53:01.788944031Z" level=info msg="[graphdriver] using prior storage driver \"devicemapper\""
time="2016-11-23T07:53:01.793561685Z" level=info msg="Graph migration to content-addressability took 0.00 seconds"
time="2016-11-23T07:53:01.794228177Z" level=warning msg="mountpoint for pids not found"
time="2016-11-23T07:53:01.794714149Z" level=info msg="Loading containers: start."
time="2016-11-23T07:53:01.996320180Z" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be used to set a preferred IP address"
time="2016-11-23T07:53:02.101877068Z" level=fatal msg="Error starting daemon: Error initializing network controller: Error creating default \"bridge\" network: package not installed"

它显示“package not installed”,但是当我运行sudo modinfo bridge时,它显示了该模块。我是否还缺少其他软件包?

我尝试在/etc/sysconfig/docker中设置环境变量,也尝试通过二进制文件进行安装,还尝试创建用户并将其添加到docker组。我尝试了许多其他解决方案,例如:

- [Docker service does not start](https://stackoverflow.com/questions/30132706/docker-service-does-not-start)

- [Cannot connect to docker daemon](https://stackoverflow.com/questions/38971668/cannot-connect-to-docker-daemon)

- [Docker command can't connect to Docker daemon](https://stackoverflow.com/questions/33562109/docker-command-cant-connect-to-docker-daemon)

但是没有一个解决方案有效!有人可以帮助我吗?

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(Error initializing network controller in docker daemon)这个问题的出现的原因可能是在Oracle Linux 6上安装Docker时引发的问题。解决方法是安装docker-io-1.6.2-3.el6.x86_64.rpm而不是docker-engine,并在安装之前下载一些其他Docker所需的库。以下是具体的解决步骤:

1. 下载docker-io软件包。可以在https://dl.fedoraproject.org/pub/epel/testing/6/x86_64/找到。

2. 下载一些其他Docker所需的库。

- 编辑yum.repos.d文件,根据你的Oracle Linux 6进行修改。

- 执行以下命令:

     cd /etc/yum.repos.d
     wget http://www.hop5.in/yum/el6/hop5.repo
     yum update
     

3. 安装RPM文件并启动Docker。

- 执行以下命令:

     rpm -ivh docker-io-1.6.2-3.el6.x86_64.rpm
     service docker start
     

如果在给定的链接中没有找到docker-io-1.6.2,可以尝试使用其他版本。如果想要使用Docker,建议将Oracle Linux升级到版本7。如果无法升级,可能需要在互联网上查找docker-io-1.6.2-3.el6.x86_64.rpm软件包。

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