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DNS cache question

Posted by Dag Nygren 
Dag Nygren
DNS cache question
March 19, 2018 01:59AM
Hi guys!

As many of you probably already have noticed Networker
caches a lot of thing in /nsr/tmp and shutting down Networker
and removing the whole directory will fix strange problems
in your installation.

One of the things that seems to be cached is the IP of the server
nsrexecd would like to speak to, the names in the servers file I guess.

This means that if I reboot my laptop somewhere outside
the company network the result of the caching is that
the backup server doesn't exist. Then I normally pur the laptop
to sleep and resume back at the office.
Now when Networker tries to back up the machine the result
will be confusing:

nsrexecd SYSTEM warning Cannot determine the address for host <backup server>

which is obviously false as we now are in the company network and
there is no probles reaching the server. But nsrexecd never
even TRY to refresh the cached information...
Restarting nsrexecd will make everything work fine.

Now to my question:
Has anyone of you found a way to clear this false cache information other
than restarting nsrexecd ?

Best
Dag


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Dag Nygren
Re: DNS cache question
March 19, 2018 01:59AM
On måndag 19 mars 2018 kl. 10:12:14 EET Dag Nygren wrote:

> Now to my question:
> Has anyone of you found a way to clear this false cache information other
> than restarting nsrexecd ?

Replying to myself here:

Found the following command:


dbgcommand -p `pidof nsrexecd` FlushDnsCache

will test it next time this happens and get back to you!
Or please comment if you have used it and it worked!

Best
Dag


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