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From Shanker Balan <m...@shankerbalan.net>
Subject Re: Ports needed between servers
Date Thu, 30 Aug 2012 08:40:59 GMT
On Thu, Aug 30, 2012 at 12:34:35AM -0600, Caleb Call wrote:
> Let's bring this back up.  According to the document from Citrix, the
> ports that are needed are all TCP.  Is this correct?  Or do we need
> UDP for some of these as well (nfs, rpc, etc)?  I've got the required
> ports opened up (according to the document) and I'm unable to mount my
> secondary storage.  I'm guessing it's due to needing UDP as well but
> would like to confirm that before asking for more ports to be opened
> from our neteng team.
> 
> TCP works on port 2049:
> 
> [root@offshore-hv01 ~]# telnet 10.4.43.44 2049
> Trying 10.4.43.44...
> Connected to 10.4.43.44.
> Escape character is '^]'.
> ^]
> telnet> quit
> Connection closed.
> [root@offshore-hv01 ~]# 
> 
> However, when I try to mount the nfs share, it just hangs and times-out:
> 
> [root@offshore-hv01 ~]# mount 10.4.43.44:/vol/offshore_vm_images /mnt/nfs
> mount: mount to NFS server '10.4.43.44' failed: timed out (retrying).
> mount: mount to NFS server '10.4.43.44' failed: timed out (retrying).
> mount: mount to NFS server '10.4.43.44' failed: timed out (retrying).
> ^C
> [root@offshore-hv01 ~]#

<snip>

nfs(5) has a section on "Mounting through a firewall". Perhaps that can
be of help to debug the problem.

You could try forcing the proto=tcp mount option and also check if the
portmapper ports are open. tcpdump(1) helps to track it down
further.

Hth.
@shankerbalan

-- 
http://shankerbalan.net/

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