Parallels

Resolution

In Parallels Virtuozzo Containers 4.x one may mount NFS share from within a container.

Let us assume we have the container #101 based on CentOS OS. The steps outlined below will allow to mount share named as '/share' from the NFS server nfs.domain.com as '/mnt' from within the container #101.

First, for NFS mounts to work in containers you must load the module 'nfs' on the Virtuozzo hardware server itself:

Then, to allow a container to use NFS filesystem, you will need to start it with "nfs" feature enabled:

If the container is running while you set the 'nfs' feature, you will need to restart it:

After it is done you should see 'nfs' in the list of available filesystems inside the container #101:

Next, you need to install the packages 'nfs-utils' and 'nfs-utils-lib' in the container, it may be done using the utility 'yum':
Note: if you have Debian- or Ubuntu-based container then you need to install the package 'nfs-common' instead of 'nfs-utils' and 'nfs-utils-lib'. Use the utility 'apt-get':
Now you may mount NFS share from within the container #101:
- start the service 'portmap':

- mount NFS share:

In case you see error like this:

mount: mount to NFS server 'nfs.domain.com' failed: RPC Error: Program not registered.

please make sure that nfs server is running on nfs source node:
You may also want to make service 'portmap' to start automatically when the container is booting, use the utility 'chkconfig':


And finally, you may add the feature 'nfs' to every new Container you will create, it may be done using scripts 'vps.create' or 'vps.clone'. Please refer to this article for more details - How do I automate actions after container creating/cloning.