On 28/09/05, Tom Brown <tom.brown at goodtechnology.com> wrote: > Just upgrading one of my dev servers - I'm replacing a current box that > runs 7.3 to one that runs CentOS 4.1 > > Currently the 7.3 dev box talks to a fileserver also running 7.3 over > NFS and that works fine. I'm now trying to get the CentOS 4.1 box to > talk NFS to the 7.3 server. > > When i try and mount the NFS share on the CentOS box i get the following > error > > # mount /mnt/cvs > mount to NFS server 'Server Name' failed: server is down. > > Now i know the server is not down as the 7.3 client is connected fine. > Anyone seen this before or know a work around? Nothing in any logs from > client or server to give me any hints? You'll need portmap and nfslock services started on the client at the absolute minimum. To check run: chkconfig --list | grep -E 'portmap|nfslock' If you're mounting by name in /etc/fstab then you should probably have an entry for the server in /etc/hosts rather than relying on DNS. Can the client ping the server? Is the new client machine running iptables or using SELinux? If it's local firewalling and you want to leave it on NFS can be a pain but it's do-able with some changes on the server. See: https://www.redhat.com/archives/fedora-list/2004-November/msg08461.html and http://nfs.sourceforge.net/nfs-howto/security.html#CLIENT.SECURITY You might want to check the iptables and/or TCP Wrappers setup on the server too. /etc/hosts.allow and /etc/hosts.deny Will.