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тАО04-05-2006 02:01 PM
тАО04-05-2006 02:01 PM
DNS question ..reverselookups ?
I had a host configured as a dns client , but today I had some connectivity issues (gwan problems, effecting the name servers )which was causing timeouts to happen on the Oracle db on this particular host. I then went in and hashed out the entried in the /etc/resolv.conf and modified the /etc/nsswitch.conf to not use dns anymore and just use hosts, but connectivity/timeout problem still persisted. If I did a nslookup ,it showed that it was only using the hosts file. The slow connectivityproblem was solved only once the gwan issues were resolved.
Also I was told by the Wintel guys ( the name servers I am suing are windows boxes )that according to the logs on the nameservers they could see that my unix host was still trying to do reverselookups , even thought I did not have dns in my nsswitch.conf ? I am a bit surprised .
Regards,
Roy
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тАО04-05-2006 06:33 PM
тАО04-05-2006 06:33 PM
Re: DNS question ..reverselookups ?
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тАО04-07-2006 05:04 AM
тАО04-07-2006 05:04 AM
Re: DNS question ..reverselookups ?
turn of DNS lookups, just nssswitch.
If you are runing nscd or the like you may
need to restart them after modifying
/etc/nsswitch. Long running applications
which use the resolver library will likely
also miss the changes to nsswitch.conf.
They should be restarted.
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тАО04-09-2006 01:26 PM
тАО04-09-2006 01:26 PM
Re: DNS question ..reverselookups ?
Looks like the issue is not unix related anymore .
regards,
Roy
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тАО04-09-2006 01:27 PM
тАО04-09-2006 01:27 PM