Re: [CentOS] NFS / DNS problem

2007-08-15 Thread Simone Mangelio
Hi Andreas, All the servers have the same /etc/resolv.conf file: search our.domain.com options ndots:2 nameserver ns0IP nameserver ns1IP I can't see any errors on the web servers or nfs servers referring a host lookup failure. Thanks Simone On 8/15/07, Andreas Rogge <[EMAIL PROTECTED]> wrote

Re: [CentOS] NFS / DNS problem

2007-08-15 Thread Andreas Rogge
Hi Simone, what nameservers are configured for the nfs-servers? Afaict the nfs-server does forward and reverse lookup the clients. So if your nfs-server's DNS breaks (i.e. if only ns0 is configured there and you shut down ns0) you might see the issue you described. Regards, Andreas Simone s

Re: [CentOS] NFS / DNS problem

2007-08-15 Thread Simone Mangelio
Hi Peter Thanks for your reply. Some more info: /etc/resolv.conf on ns1 nameserver ns0IP nameserver ns1IP At the time ns0 was down, I can see that even ns1 fails mounting the nfs shares (timed out): Aug 14 08:30:31 ns1 automount[4093]: >> mount: mount to NFS server 'nfs-web' failed: timed out

Re: [CentOS] NFS / DNS problem

2007-08-14 Thread Peter (CentOS List)
The first thing that popped in my head was reverse lookup, but as I kept reading and saw your test with web3 it could ave been a sync problem between the two nameservers. By restarting ns1 all the zones were synced again and your initial problem isn't there anymore and so your test with web3 was su

[CentOS] NFS / DNS problem

2007-08-14 Thread Simone
Hi all, Today we have had a strange problem that has taken down our website, we understand what happened but not why so I am hoping someone has seen this before. We have our web servers (web1 web2 web3 . web10) mounting an NFS share (/export/data) from server nfs1. On the web server side