new with linux

nvelissa · 10-06-2008, 11:20 PM

i am a student at rosalind franklin university for medicine and science. i am a first year with not very much linux experience and we are adding computers to our neuroimaging lab. we are haveing problem adding two new computers to a network file sharing(nfs) on a linux network. one is on red hat 9, the other is an imac running os10.3.9

the other computers are running red hat or fedora core and are working properly. we have properly configured host table and fstab file on both client and host. we know the network is working properly because ssh allows access to the host. we however, have no access to any of the data through nfs.

any advice or help for me?

nick
nvelissa@gmail.com

jschiwal · 10-06-2008, 11:49 PM

Most likely you need to open up port 111 in the firewall.
Interesting ports on hpmedia.jesnet (192.168.1.101):

Code:

PORT     STATE SERVICE
22/tcp   open  ssh
111/tcp  open  rpcbind
2049/tcp open  nfs

Ports 111 and 2049 needs to be open on the nfs server. Port 111 needs to be open on the client.

Also check the /etc/exports file on the server. If it lists each host individually, you need to add the ip address of each client. Mine allows connections from the subnet. I've had better luck using <net address>/<netmask>.

Code:

/home/jschiwal/podcasts 192.168.1.0/255.255.255.0(fsid=0,rw,root_squash,sync,no_subtree_check)

Examples from "man exports":

Code:

EXAMPLE
       # sample /etc/exports file
       /               master(rw) trusty(rw,no_root_squash)
       /projects       proj*.local.domain(rw)
       /usr            *.local.domain(ro) @trusted(rw)
       /home/joe       pc001(rw,all_squash,anonuid=150,anongid=100)
       /pub            (ro,insecure,all_squash)
       /srv/www        -sync,rw server @trusted @external(ro)

If the /etc/exports file uses a netgroup (e.g. @labgroup), make sure that the new computers are members of the netgroup.

nvelissa · 10-09-2008, 03:01 PM

Most likely you need to open up port 111 in the firewall.
Interesting ports on hpmedia.jesnet (192.168.1.101):

Code:

PORT     STATE SERVICE
22/tcp   open  ssh
111/tcp  open  rpcbind
2049/tcp open  nfs

Ports 111 and 2049 needs to be open on the nfs server. Port 111 needs to be open on the client.

Where do I find the iptables file on a mac and linux? I tried opening these 2 ports on the server (nc -l portnumber), but it said they were already in use. When I run these commands on the clients, it just hangs.

Also check the /etc/exports file on the server. If it lists each host individually, you need to add the ip address of each client. Mine allows connections from the subnet. I've had better luck using <net address>/<netmask>.

Code:

/home/jschiwal/podcasts 192.168.1.0/255.255.255.0(fsid=0,rw,root_squash,sync,no_subtree_check)

Examples from "man exports":

Code:

EXAMPLE
       # sample /etc/exports file
       /               master(rw) trusty(rw,no_root_squash)
       /projects       proj*.local.domain(rw)
       /usr            *.local.domain(ro) @trusted(rw)
       /home/joe       pc001(rw,all_squash,anonuid=150,anongid=100)
       /pub            (ro,insecure,all_squash)
       /srv/www        -sync,rw server @trusted @external(ro)

If the /etc/exports file uses a netgroup (e.g. @labgroup), make sure that the new computers are members of the netgroup.[/QUOTE]

I tried your suggestion of using the ipaddress/netmask, but it doesn't work. For the other three machines, I am just using the names of the machines, and it has always worked fine for them.

Here is my exports file, by the way:
/home pigpen(rw,sync,nohide) 192.168.43.44/255.255.255.0(rw,sync,nohide) lucy(rw,sync,nohide)
homer(rw,sync,nohide) 192.168.43.46/255.255.255.0(rw,sync,nohide)
/share/brains2 pigpen(rw,sync,nohide) 192.168.43.44/255.255.255.0(rw,sync,nohide) lucy(rw,sync,nohide)
homer(rw,sync,nohide) 192.168.43.46/255.255.255.0(rw,sync,nohide)
/share/afni pigpen(rw,sync,nohide) 192.168.43.44/255.255.255.0(rw,sync,nohide) lucy(rw,sync,nohide)
homer(rw,sync,nohide) 192.168.43.46/255.255.255.0(rw,sync,nohide)
/usr/local/brains2 pigpen(rw,sync,nohide) 192.168.43.44/255.255.255.0(rw,sync,nohide) lucy(rw,sync,nohide)
homer(rw,sync,nohide) 192.168.43.46/255.255.255.0(rw,sync,nohide)
/usr/local/matlab74_sv pigpen(rw,sync,nohide) 192.168.43.44/255.255.255.0(rw,sync,nohide) lucy(rw,sync,nohide)
homer(rw,sync,nohide) 192.168.43.46/255.255.255.0(rw,sync,nohide)
/usr/local/mricro pigpen(rw,sync,nohide) 192.168.43.44/255.255.255.0(rw,sync,nohide) lucy(rw,sync,nohide)
homer(rw,sync,nohide) 192.168.43.46/255.255.255.0(rw,sync,nohide)

r3sistance · 10-09-2008, 08:38 PM

Red Hat 9 is pretty old so not sure is the issue is that simple but iptables is just iptables on the command line "iptables -nvL" will show the currently rules. As for a Mac, I didn't think Macs came with firewalls on by default, I have a Mac and never touched any firewalling on it really...