%general-entities; ]> $LastChangedBy$ $Date$ nfs-utils-&nfs-utils-version;.tar nfs-utils NFS Utilities The NFS Utilities package contains the userspace server and client tools necessary to use the kernel's nfs abilities. NFS is a protocol that allows sharing file systems over the network. Package information Download (HTTP): Download (FTP): Download MD5 sum: &nfs-utils-md5sum; Download size: &nfs-utils-size; Estimated disk space required: &nfs-utils-buildsize; Estimated build time: &nfs-utils-time; NFS Utilities Dependencies Required Optional libevent and libnsfidmap for nfsv4 support, and or for gss (RPC Security) support. Enable the following options in the kernel configuration and recompile the kernel if necessary: File systems: Network File Systems: NFS File System Support: M or Y NFS Server Support: M or Y Select the appropriate sub-options that appear when the above options are selected. NFS Utilities Before you compile the program, you need to be sure the nobody user and nogroup group are available. You can add these by running the following commands as the root user: groupadd -g 99 nogroup && useradd -c "Unprivileged Nobody" -d /dev/null -g nogroup \ -s /bin/false -u 99 nobody The classic uid and gid values are 65534 which is also -2 when interpreted as a signed 16-bit number. These values impact other files on some filesystems that do not have support for sparse files. The nobody and nogroup values are relatively arbitrary. The impact on a server is nil if the exports file is configured correctly. If it is misconfigured, the ls -l or ps listing will show a uid or gid number of 65534 instead of a name. The client uses nobody only as the user running rpc.statd. Install NFS Utilities by running the following commands: ./configure --prefix=/usr --sysconfdir=/etc \ --disable-nfsv4 --disable-gss && make Now, as the root user: make install If your /usr directory is NFS mounted, you should install the executables in /sbin by passing an additional parameter --sbindir=/sbin to the above ./configure command. --disable-nfsv4: Disables support for NFS Version 4. --disable-gss: Disables support for RPCSEC GSS (RPC Security). /etc/exports contains the exported directories on NFS servers. Refer to the exports manual page for the syntax of this file. Also refer to the "NFS HowTo" available at on how to configure the servers and clients in a secure manner. For example, for sharing the /home directory over the local network, the following line may be added: /home 192.168.0.0/255.255.255.0(rw,anonuid=99,anongid=99) /etc/exportfs Install the /etc/rc.d/init.d/nfs-server init script included in the package to start the server at boot. make install-nfs-server nfs-server Now create the /etc/sysconfig/nfs-server configuration file: cat > /etc/sysconfig/nfs-server << "EOF" PORT="2049" PROCESSES="8" QUOTAS="no" KILLDELAY="10" EOF /etc/sysconfig/nfs-server /etc/fstab contains the directories that are to be mounted on the client. Alternately the partitions can be mounted by using the mount command with the proper options. To mount the /home and /usr partitions, add the following to the /etc/fstab: <server-name>:/home /home nfs rw,_netdev,rsize=8192,wsize=8192 0 0 <server-name>:/usr /usr nfs ro,_netdev,rsize=8192 0 0 /etc/fstab Install the /etc/rc.d/init.d/nfs-client init script included in the package to start the client services at boot. make install-nfs-client nfs-client To automatically mount nfs filesystems, clients will also need to install the netfs bootscript as described in . netfs Installed Programs Installed Libraries Installed Directories exportfs, nfsstat, nhfsgraph, nhfsnums, nhfsrun, nhfsstone, rpc.lockd, rpc.mountd, rpc.nfsd, rpc.rquotad, rpc.statd, and showmount None /var/lib/nfs Short Descriptions exportfs maintains a list of NFS exported file systems. exportfs nfsstat prints NFS statistics. nfsstat nhfsgraph runs nhfsstone over multiple loads. nhfsgraph nhfsnums converts raw numbers from nhfsstone output into plot format. nhfsnums nhfsrun executes nhfsstone with a range of different loads. nhfsrun nhfsstone is used on a NFS client to generate an artificial load with a particular mix of NFS operations. nhfsstone rpc.lockd starts the NFS lock manager (NLM) on kernels that don't start it automatically. However, since most kernels do start it automatically it is usually not required. rpc.lockd rpc.mountd implements the NFS mount protocol on an NFS server. rpc.mountd rpc.nfsd implements the user level part of the NFS service on the server. rpc.nfsd rpc.rquotad is an rpc server which returns quotas for a user of a local file system which is mounted by a remote machine over the NFS. rpc.rquotad rpc.statd is used by the NFS file locking service, rpc.lockd, to implement lock recovery when the NFS server machine crashes and reboots. Runs on the NFS server only. rpc.statd showmount displays mount information for an NFS server. showmount