在docker容器内安装nfs共享 [英] Mounting nfs shares inside docker container

问题描述

有没有人知道如何使用centos基本映像挂载docker容器内的nfs共享？我试过这个命令：

  mount server：/ dir / mount / point 
  

并得到下一个错误：

mount .nfs：rpc.statd没有运行，但是远程锁定是必需的。

mount.nfs：使用'-o nolock'来保持锁定本地或开始状态。

mount.nfs：指定了错误的挂载选项

当我尝试使用 -o nolock 选项时，错误是：

  mount.nfs：不允许操作
  

解决方案

对于使用 mount ，您需要 CAP_SYS_ADMIN 功能，Docker在创建容器时将其删除。 / p>

有几种解决方案：

1. 使用 - privileged = true 标志。这会导致Docker不会丢弃任何功能，这些功能应该允许您从容器内装载NFS共享。这可能是一个安全问题;不要在不受信任的容器中执行此操作。



2. 将NFS共享挂载在主机上，并将其作为主机卷传递到容器中：

    你@主机> mount服务器：/ dir / path / to / mount / point 
   你@主机> docker运行-v / path / to / mount / point：/ path / to / mount / point 
     


<

使用Docker卷插件（如 Netshare 插件）直接安装NFS分享为容器卷：

 你@主机> docker运行\ 
 --volume-driver = nfs \ 
 -v server / dir：/ path / to / mount / point \ 
 centos 
  

Does anyone know how to mount nfs share inside docker container with centos base image? I've tried this command:

mount server:/dir /mount/point

and got the next error:

mount.nfs: rpc.statd is not running but is required for remote locking.
mount.nfs: Either use '-o nolock' to keep locks local, or start statd.
mount.nfs: an incorrect mount option was specified

when I try to use it with -o nolock option, the error is:

mount.nfs: Operation not permitted

解决方案

For using mount, you'll need the CAP_SYS_ADMIN capability, which is dropped by Docker when creating the container.

There are several solutions for this:

1. Start the container with the --privileged=true flag. This causes Docker to not drop any capabilities, which should allow you to mount a NFS share from within the container. This might be a security issue; do not do this in untrusted containers.

2. Mount the NFS share on the host and pass it into the container as a host volume:

   you@host > mount server:/dir /path/to/mount/point
   you@host > docker run -v /path/to/mount/point:/path/to/mount/point
   

3. Use a Docker volume plugin (like the Netshare plugin) to directly mount the NFS share as a container volume:

   you@host > docker run \
     --volume-driver=nfs \
     -v server/dir:/path/to/mount/point \
     centos
   

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