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Managing Network File Systems in Oracle Solaris 11.1     Oracle Solaris 11.1 Information Library
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Document Information

Preface

1.  Managing Network File Systems (Overview)

2.  Network File System Administration (Tasks)

Automatic File System Sharing

How to Set Up Automatic File-System Sharing

How to Enable WebNFS Access

How to Enable NFS Server Logging

Mounting File Systems

How to Mount a File System at Boot Time

How to Mount a File System From the Command Line

Mounting With the Automounter

How to Mount All File Systems from a Server

How to Use Client-Side Failover

How to Disable Mount Access for One Client

How to Mount an NFS File System Through a Firewall

How to Mount an NFS File System Using an NFS URL

Setting up a DNS Record for a FedFS Server

How to Display Information About File Systems Available for Mounting

Setting Up NFS Services

How to Start the NFS Services

How to Stop the NFS Services

How to Start the Automounter

How to Stop the Automounter

How to Select Different Versions of NFS on a Server

How to Select Different Versions of NFS on a Client

How to Use the mount Command to Select Different Versions of NFS on a Client

Administering the Secure NFS System

How to Set Up a Secure NFS Environment With DH Authentication

WebNFS Administration Tasks

Planning for WebNFS Access

How to Browse Using an NFS URL

How to Enable WebNFS Access Through a Firewall

Task Overview for Autofs Administration

Task Map for Autofs Administration

Using SMF Parameters to Configure Your Autofs Environment

How to Configure Your Autofs Environment Using SMF Parameters

Administrative Tasks Involving Maps

Modifying the Maps

How to Modify the Master Map

How to Modify Indirect Maps

How to Modify Direct Maps

Avoiding Mount-Point Conflicts

Accessing Non-NFS File Systems

How to Access CD-ROM Applications With Autofs

How to Access PC-DOS Data Diskettes With Autofs

Customizing the Automounter

Setting Up a Common View of /home

How to Set Up /home With Multiple Home Directory File Systems

How to Consolidate Project-Related Files Under /ws

How to Set Up Different Architectures to Access a Shared Namespace

How to Support Incompatible Client Operating System Versions

How to Replicate Shared Files Across Several Servers

How to Apply Autofs Security Restrictions

How to Use a Public File Handle With Autofs

How to Use NFS URLs With Autofs

Disabling Autofs Browsability

How to Completely Disable Autofs Browsability on a Single NFS Client

How to Disable Autofs Browsability for All Clients

How to Disable Autofs Browsability on a Selected File System

Administering NFS Referrals

How to Create and Access an NFS Referral

How to Remove an NFS Referral

Administering FedFS

How to Create an Namespace Database (NSDB)

How to Use a Secured Connection to the NSDB

How to Create a FedFS Referral

Strategies for NFS Troubleshooting

NFS Troubleshooting Procedures

How to Check Connectivity on an NFS Client

How to Check the NFS Server Remotely

How to Verify the NFS Service on the Server

How to Restart NFS Services

Identifying Which Host Is Providing NFS File Service

How to Verify Options Used With the mount Command

Troubleshooting Autofs

Error Messages Generated by automount -v

Miscellaneous Error Messages

Other Errors With Autofs

NFS Error Messages

3.  Accessing Network File Systems (Reference)

Index

WebNFS Administration Tasks

This section provides instructions for administering the WebNFS system. Related tasks follow.

Table 2-4 Task Map for WebNFS Administration

Task
Description
For Instructions
Plan for WebNFS
Issues to consider before enabling the WebNFS service.
Enable WebNFS
Steps to enable mounting of an NFS file system by using the WebNFS protocol.
Enable WebNFS through a firewall
Steps to allow access to files through a firewall by using the WebNFS protocol.
Browse by using an NFS URL
Instructions for using an NFS URL within a web browser.
Use a public file handle with autofs
Steps to force use of the public file handle when mounting a file system with the automounter.
Use an NFS URL with autofs
Steps to add an NFS URL to the automounter maps.
Provide access to a file system through a firewall
Steps to allow access to a file system through a firewall by using the WebNFS protocol.
Mount a file system by using an NFS URL
Steps to allow access to a file system by using an NFS URL. This process allows for file system access without using the MOUNT protocol.

Planning for WebNFS Access

To use WebNFS, you first need an application that is capable of running and loading an NFS URL (for example, nfs://server/path). The next step is to choose the file system that can be exported for WebNFS access. If the application is web browsing, often the document root for the web server is used. You need to consider several factors when choosing a file system to export for WebNFS access.

  1. Each server has one public file handle that by default is associated with the server's root file system. The path in an NFS URL is evaluated relative to the directory with which the public file handle is associated. If the path leads to a file or directory within an exported file system, the server provides access. You can use the public option of the share command to associate the public file handle with a specific exported directory. Using this option allows URLs to be relative to the shared file system rather than to the server's root file system. The root file system does not allow web access unless the root file system is shared.

  2. The WebNFS environment enables users who already have mount privileges to access files through a browser. This capability is enabled regardless of whether the file system is exported by using the public option. Because users already have access to these files through the NFS setup, this access should not create any additional security risk. You only need to share a file system by using the public option if users who cannot mount the file system need to use WebNFS access.

  3. File systems that are already open to the public make good candidates for using the public option. Some examples are the top directory in an ftp archive or the main URL directory for a web site.

  4. You can use the index option with the share command to force the loading of an HTML file. Otherwise, you can list the directory when an NFS URL is accessed.

    After a file system is chosen, review the files and set access permissions to restrict viewing of files or directories, as needed. Establish the permissions, as appropriate, for any NFS file system that is being shared. For many sites, 755 permissions for directories and 644 permissions for files provide the correct level of access.

    You need to consider additional factors if both NFS and HTTP URLs are to be used to access one web site. These factors are described in WebNFS Limitations With Web Browser Use.

How to Browse Using an NFS URL

Browsers that are capable of supporting the WebNFS service should provide access to an NFS URL that resembles the following:

nfs://server<:port>/path
server

Name of the file server

port

Port number to use (2049, default value)

path

Path to file, which can be relative to the public file handle or to the root file system


Note - In most browsers, the URL service type (for example, nfs or http) is remembered from one transaction to the next. The exception occurs when a URL that includes a different service type is loaded. After you use an NFS URL, a reference to an HTTP URL might be loaded. If such a reference is loaded, subsequent pages are loaded by using the HTTP protocol instead of the NFS protocol.


How to Enable WebNFS Access Through a Firewall

You can enable WebNFS access for clients that are not part of the local subnet by configuring the firewall to allow a TCP connection on port 2049. Just allowing access for httpd does not allow NFS URLs to be used.