In case you are using NFS server, here are some handy commands you can use while working in production. These were tested in Ubuntu Linux.
Install nfs server
To install nfs server
$ sudo apt-get install nfs-common $ sudo apt-get install nfs-kernel-server
Add the following line to /etc/hosts.allow
rpcbind mountd nfsd statd lockd rquotad : 127.0.0.1
export a directory
Create the directory to be exported.
$ sudo mkdir -p /myexport/dir1
Add the following line to /etc/exports
/myexport/dir1 *(rw,sync,no_subtree_check,no_root_squash)
Note that this will allow any client to mount the exported directory on server if port 2049 is accessible from client to server. You may want to set appropriate client IPs here.
Now run the following to export the directory:
$ exportfs -ar
show what exports are available on a server
Use showmount to show what exports are available on localhost
showmount -e localhost
show what exports are available on a server from client
Use showmount on client machine to show what exports are available from nfs server
showmount -e nfsserver1.com Export list for nfsserver1.com: /myexport/dir1 *
Mount directory from client
Mount directory from client
$ mkdir -p /mnt1/nfsserver1.com/myexport/dir1 $ mount -t nfs nfsserver1.com:/myexport/dir1 /mnt1/nfsserver1.com/myexport/dir1
Displaying clients connected to server
Use netstat to list all connections and grep for NFS port.
MYIP=`ifconfig eth0 | grep "inet addr:" |awk -F":" '{print $2}' | awk '{print $1}'`
$ netstat -an | grep $MYIP:2049
tcp 0 0 172.30.0.30:2049 10.197.76.130:899 ESTABLISHED
Note: In case you want to automount the file during startup, add the following line in /etc/fstab
nfsserver1.com:/myexport/dir1 /mnt1/nfsserver1.com/myexport/dir1 nfs rw
After that mount and unmount can be done directly using
mount /mnt1/nfsserver1.com/myexport/dir1 or umount /mnt1/nfsserver1.com/myexport/dir1
