On Thu, May 3, 2012 at 2:03 AM, Rémy Dernat <[email protected]> wrote:
> Hi, > > Thanks for your answers. > > I tried with ".local" at the end. It did not change anything for qping on > execd. > The order for name resolution is hosts and then, bind, according to > /etc/host.conf > In nsswitch.conf, I have (for host resolution) : > >> hosts: files dns > > > > I have checked my named log file and SGE log files... No errors. I have > another master node, and if I try the qping command to an exec node, it > works !!!!? My /etc/hosts files are the same, and /etc/resolv.conf is the > same too... I compared my bind configuration on both DNS masters without > success. The bind versions are differents but configuration files seems to > be the same. > > My first master is in the list of administrative host. > > How can I check more precisely what happens ? > nslookup compute-0-4.local Then, get the IP address that this returns and run: nslookup <IP address> What does it return? Simon > -Regards, > > Remy. > > 2012/5/3 Simon Matthews <[email protected]> > >> >> >> On Wed, May 2, 2012 at 9:06 AM, Rémy Dernat <[email protected]> wrote: >> >>> Hi, >>> >>> I have a very strange hostname/IP resolve problem : >>> >>> >>> From qmaster, if I qping a compute node : >>> >>> qping compute-0-4 537 execd 1 >>> >>> >>> Answer of compute-0-4 : >>> >>> endpoint compute-0-4.local/execd/1 at port 537: can't find connection >>> access denied: client IP resolved to host name "". This is not identical >>> to clients host name "" >>> endpoint compute-0-4.local/execd/1 at port 537: can't find connection >>> >>> I have the same problem for all my nodes but this problem does not occur >>> with qsub or qstat... ! So SGE is working fine (except that little error). >>> >>> I know that I have changed some informations in my /var/named/... files >>> and in my /etc/hosts , but I can not find my error. >>> >>> The qping in the other direction, execd to qmaster, is working fine. >>> >>> The result of >>> hostname -s >>> on qmaster give the content of $SGE_ROOT/$SGE_CELL/common/act_qmaster >>> on all nodes and on qmaster. >>> >> >> >> It looks like the mapping of IP address -> hostname does not match the >> mapping of hostname -> IP address. Depending on how your network resolves >> the IP address, this could be in: >> /etc/hosts >> NIS "hosts" map >> DNS >> etc.. >> >> You need to check the order specified in /etc/nsswitch.conf and then >> examine each mechanism (files, NIS, DNS) to see what name the IP address >> of compute-0-4 resolves to in the first mechanism that resolves it. >> >> Simon >> > > > _______________________________________________ > users mailing list > [email protected] > https://gridengine.org/mailman/listinfo/users > >
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