DNS question

From: Jonathan Williams <jonathw_at_shubertorg.com>
Date: Thu, 15 Feb 2001 12:31:19 -0500

OK. I hope I can explain this correctly. Basically, what we have is a server that is running an online application (we will call this server "Online"). The client PCs connect to this server, by way of a DNS server (we will call this other server DNS). So what happened is that the Online server completely died on us. We configured another server yesterday to take over the work of the online server. And to make our job easier we just removed the DNS entry for the the Online server and added an alias in the DNS for the new machine. Everything worked great yesterday. Today however, everyone complained they could no longer access the new Online server. I tried to ping it, and noticed that it was using the OLD ip address. I double checked the DNS entry, and that was still fine. Then I checked the Local Host File on the DNS server, and noticed that it had the original Online server with the old ip address still. I removed this entry, and then everything started working again. So my question is, how come it worked yesterday, and then all of a sudden today it stopped working. I know nobody changed the Local Host file in question. We were thinking it might have something to do with the way the DNS is cached in memory. But in general, is DNS even supposed to read the Local host file of the server? It seems odd to me, but then again I don't really know very much. Thanks for the response....

Jonathan Williams
Received on Thu Feb 15 2001 - 17:31:05 NZDT

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