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Re: Load balancing

From: Men & Mice Support
Date: Thursday, October 18, 2001
Time: 4:54:24 pm

This sounds like the NAT server issue I was mentioning earlier. With
most NAT servers, you can't connect between inside machines using the
public IP address - the port mapping doesn't work, because the NAT
doesn't work right. It sounds like your NAT server has this problem.

Just to be sure: Are you using the public name of your server, or its
internal IP address?
____________________________________________________________________
Chris Buxton Men & Mice
support@menandmice.com Making DNS Easy

At 3:44 PM -0700 10/18/01, Ross Markbreiter wrote:
> Hmm. is there any other port needs to be open? I cannot connect to
>a new server I am testing out on a backup dns server.
> I can get out on the internet with the server but cannot connect
>QDNS manager to it, I opened port 1337
>Thanks for your time.
>
>>QuickDNS Manager uses port 1337/TCP.
>>QuickDNS Load Balancer uses port 80/TCP to talk to the web servers.
>>____________________________________________________________________
>>Chris Buxton Men & Mice
>>support@menandmice.com Making DNS Easy
>>
>>At 1:42 PM -0700 10/18/01, Ross Markbreiter wrote:
>>>What port is needed to have QDNS manager connect to it?
>>>
>>>>Right. And that's why QuickDNS Load Balancer thinks that the web
>>>>server inside the NAT server is not responding.
>>>>
>>>>I'm afraid I don't have a solution for you, though, other than to
>>>>replace the Cisco NAT server with something that's able to do
>>>>two-way NAT, or else to put your servers on a DMZ (if the router
>>>>supports that).
>>>>____________________________________________________________________
>>>>Chris Buxton Men & Mice
>>>>support@menandmice.com Making DNS Easy
>>>>
>>>>At 7:15 PM -0700 10/17/01, Ross Markbreiter wrote:
>>>>>Oh! From inside the network I cannot connect to
>>>>><http://38.228.178.2/>, only outside.
>>>>>
>>>>>>That's not exactly what I expected. :-\
>>>>>>
>>>>>>If you can connect, from the inside, to <http://38.228.178.2/>,
>>>>>>then the question becomes, why can't QuickDNS Load Balancer?
>>>>>>____________________________________________________________________
>>>>>>Chris Buxton Men & Mice
>>>>>>support@menandmice.com Making DNS Easy
>>>>>>
>>>>>>At 6:07 PM -0700 10/17/01, Ross Markbreiter wrote:
>>>>>>>We can connect to ciscorouter.com from inside the network yes.
>>>>>>>
>>>>>>>>Well, something's changed. From another machine inside the
>>>>>>>>NAT server, can you connect to <http://ciscorouter.com/>?
>>>>>>>>Could you connect to that URL with the previous NAT server?
>>>>>>>>____________________________________________________________________
>>>>>>>>Chris Buxton Men & Mice
>>>>>>>>support@menandmice.com Making DNS Easy
>>>>>>>>
>>>>>>>>At 4:38 PM -0700 10/17/01, Ross Markbreiter wrote:
>>>>>>>>>Chris,
>>>>>>>>>\We changed from CISCO1601 to A CISCO1720 because we added a
>>>>>>>>>backup Line to the network.
>>>>>>>>>The router is providing NAT service as it was with the 1601
>>>>>>>>>Ross
>>>>>>>>>
>>>>>>>>>>Ross,
>>>>>>>>>>
>>>>>>>>>>Changed from what router to what other router? And why? And
>>>>>>>>>>is the router providing NAT service?
>>>>>>>>>>
>>>>>>>>>>If NAT service is involved, then that is the problem. With
>>>>>>>>>>many NAT servers, a connection from inside the LAN to the
>>>>>>>>>>public IP address on a port-mapped port doesn't work.
>>>>>>>>>>
>>>>>>>>>>This doesn't affect www.48hourdiet.com because, in that
>>>>>>>>>>case, neither web server is behind your NAT server.
>>>>>>>>>>____________________________________________________________________
>>>>>>>>>>Chris Buxton Men & Mice
>>>>>>>>>>support@menandmice.com Making DNS Easy
>>>>>>>>>>
>>>>>>>>>>At 12:08 PM -0700 10/17/01, Ross Markbreiter wrote:
>>>>>>>>>>>Chris,
>>>>>>>>>>>We changed routers? but it has the same info on it? and
the Zone 48hourdiet.com has a load balance record and it works right?
>>>>>>>>>>>The only difference is that 48hourdiet.com is on a 12.xxx. network
>>>>>>>>>>>Ross
>>>>>>>>>>>
>>>>>>>>>>>>Ross,
>>>>>>>>>>>>
>>>>>>>>>>>>Do you have a NAT server involved in your setup? Or have
you recently changed anything on your network?
>>>>>>>>>>>>
>>>>>>>>>>>>We tested your data, and it works fine for us.
>>>>>>>>>>>>____________________________________________________________________
>>>>>>>>>>>>Chris Buxton
Men & Mice
>>>>>>>>>>>>support@menandmice.com
Making DNS Easy
>>>>>>>>>>>>
>>>>>>>>>>>>At 5:54 PM -0700 10/16/01, Ross Markbreiter wrote:
>>>>>>>>>>>>>Ok. I sent it.
>>>>>>>>>>>>>
>>>>>>>>>>>>>>At 4:37 PM -0700 10/16/01, Ross Markbreiter wrote:
>>>>>>>>>>>>>>>I can restarted the entire server?
>>>>>>>>>>>>>>>Is it still think it is not up?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>smtp.thewwwstore.com thinks the web server is down.
>>smtp2.thewwwstore.com thinks both web servers are down.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>Maybe you should send us your QuickDNS Data folder from
>>smtp.thewwwstore.com. Send a compressed copy of it to
>><support@menandmice.com>
>>>>>>>>>>>>>>
>Were would I put this enrty?
>>If you keep www.worldwidewebstore.com as the load balance
>>>>>>record, then you would replace the other load balance record with this:
>>
>>www.ciscorouter.com. CNAME www.worldwidewebstore.com.

In the ciscorouter.com zone. You would delete the load
>>>>balance record and enter instead the CNAME record.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>So for Ciscorouter.com delete the load balance record,
>>>>make a CNAME entry that would be www.worldwidewebstore.com
>>>>>>>>>>>>>>>I do not understand how does this cover the domain name if
>>>>one of the servers are down?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>If you create the CNAME record given above in place of
>>the load balance record in the ciscorouter.com zone, then
>>www.ciscorouter.com will have exactly the same load balancing
>>characteristics as www.worldwidewebstore.com.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>The CNAME record creates an alias (the name on the left).
>>An alias gains all the properties of the original (the name on the right).
>>>>>>>>>>>>>>_______________________________________________________________
_____
>>>>>>>>>>>>>>Chris Buxton
>>Men & Mice
>>>>>>>>>>>>>>support@menandmice.com
>>Making DNS Easy
>>>Hi Chris,
>>>That is bizarre?
>>
>>Yes, it is strange.
>>
>>>I just checked and both have 38.228.178.2 9999 is the
>>>>preference
>>
>>Have you tried rebooting the QuickDNS servers?
>>
>>>I do not know how to setup a CNAME
>>
>>If you keep www.worldwidewebstore.com as the load balance
>>>>>>record, then you would replace the other load balance record with this:
>>
>>www.ciscorouter.com. CNAME www.worldwidewebstore.com.
>>
>>>Anything else I should check for?
>>
>>If rebooting doesn't solve it, try deleting and
>>>>>>recreating one of these load balance records.
>>_______________________________________________________________
>>>>_____
>>Chris Buxton
>>>>>>Men & Mice
>>support@menandmice.com
>>>>>>Making DNS Easy
>>>>Both of your DNS servers are giving out the 12.x.x.x
>>>>>>>>address for www.<both-domains>. Double-check your load
>>>>>>>>balance records to make sure the preference values are
>>>>>>>>correct.
>>>>
>>>>Note that, since the zone names don't (and can't) have
>>>>>>>>load balance records, they still point to the 38.x.x.x address.
>>>>
>>>>Why do you have two load balance records, instead of one
>>>>>>>>load balance record and one CNAME record?
>>>>_______________________________________________________________
>>>>>>_____
>>>>Chris Buxton
>>>>>>>>Men & Mice
>>>>support@menandmice.com
>>>>>>>>Making DNS Easy
>>>>
>>>>At 2:12 PM -0700 10/16/01, Ross Markbreiter wrote:
>>>>>Hi Chris,
>>>>>Some reason www.worldwidewebstore.com and
>>>>>>worldwidewebstore.com
>>>>>are going to the server with backup entry
>>>>>I have 38.228.178.2 9999
>>>>> 12.98.202.178 1
>>>>>All www hits are going to the backup server?
>>>>>Same for www.ciscorouter.com and ciscorouter.com
>>>>>Can you see anything wrong?
>>>>>Thanks Ross
>>>>>
>>>>>Ross Markbreiter
>>>>>Director Sales
>>>>>The World Wide Web Store, Inc
>>>>>4351 Van Nuys Blvd.
>>>>>Sherman Oaks, Ca 91403
>>>>>http://www.worldwidewebstore.com
>>>>>Ph:818-905-6787
>>>>>Fax:818-905-6783
>>>>>Toll Free-888-999-7522
>>>>>ross@thewwwstore.com
>>>
>>>Ross Markbreiter
>>>Director Sales
>>>The World Wide Web Store, Inc
>>>4351 Van Nuys Blvd.
>>>Sherman Oaks, Ca 91403
>>>http://www.worldwidewebstore.com
>>>Ph:818-905-6787
>>>Fax:818-905-6783
>>>Toll Free-888-999-7522
>>>ross@thewwwstore.com
>
>Ross Markbreiter
>Director Sales
>The World Wide Web Store, Inc
>4351 Van Nuys Blvd.
>Sherman Oaks, Ca 91403
>http://www.worldwidewebstore.com
>Ph:818-905-6787
>Fax:818-905-6783
>Toll Free-888-999-7522
>ross@thewwwstore.com
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>Ross Markbreiter
>>>>>>>>>>>>>>>Director Sales
>>>>>>>>>>>>>>>The World Wide Web Store, Inc
>>>>>>>>>>>>>>>4351 Van Nuys Blvd.
>>>>>>>>>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>>>>>>>>>http://www.worldwidewebstore.com
>>>>>>>>>>>>>>>Ph:818-905-6787
>>>>>>>>>>>>>>>Fax:818-905-6783
>>>>>>>>>>>>>>>Toll Free-888-999-7522
>>>>>>>>>>>>>>>ross@thewwwstore.com
>>>>>>>>>>>>>
>>>>>>>>>>>>>Ross Markbreiter
>>>>>>>>>>>>>Director Sales
>>>>>>>>>>>>>The World Wide Web Store, Inc
>>>>>>>>>>>>>4351 Van Nuys Blvd.
>>>>>>>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>>>>>>>http://www.worldwidewebstore.com
>>>>>>>>>>>>>Ph:818-905-6787
>>>>>>>>>>>>>Fax:818-905-6783
>>>>>>>>>>>>>Toll Free-888-999-7522
>>>>>>>>>>>>>ross@thewwwstore.com
>>>>>>>>>>>
>>>>>>>>>>>Ross Markbreiter
>>>>>>>>>>>Director Sales
>>>>>>>>>>>The World Wide Web Store, Inc
>>>>>>>>>>>4351 Van Nuys Blvd.
>>>>>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>>>>>http://www.worldwidewebstore.com
>>>>>>>>>>>Ph:818-905-6787
>>>>>>>>>>>Fax:818-905-6783
>>>>>>>>>>> Toll Free-888-999-7522
>>>>>>>>>>>ross@thewwwstore.com
>>>>>>>>>
>>>>>>>>>Ross Markbreiter
>>>>>>>>>Director Sales
>>>>>>>>>The World Wide Web Store, Inc
>>>>>>>>>4351 Van Nuys Blvd.
>>>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>>>http://www.worldwidewebstore.com
>>>>>>>>>Ph:818-905-6787
>>>>>>>>>Fax:818-905-6783
>>>>>>>>> Toll Free-888-999-7522
>>>>>>>>>ross@thewwwstore.com
>>>>>>>
>>>>>>>Ross Markbreiter
>>>>>>>Director Sales
>>>>>>>The World Wide Web Store, Inc
>>>>>>>4351 Van Nuys Blvd.
>>>>>>>Sherman Oaks, Ca 91403
>>>>>>>http://www.worldwidewebstore.com
>>>>>>>Ph:818-905-6787
>>>>>>>Fax:818-905-6783
>>>>>>> Toll Free-888-999-7522
>>>>>>>ross@thewwwstore.com
>>>>>
>>>>>Ross Markbreiter
>>>>>Director Sales
>>>>>The World Wide Web Store, Inc
>>>>>4351 Van Nuys Blvd.
>>>>>Sherman Oaks, Ca 91403
>>>>>http://www.worldwidewebstore.com
>>>>>Ph:818-905-6787
>>>>>Fax:818-905-6783
>>>>> Toll Free-888-999-7522
>>>>>ross@thewwwstore.com
>>>
>>>Ross Markbreiter
>>>Director Sales
>>>The World Wide Web Store, Inc
>>>4351 Van Nuys Blvd.
>>>Sherman Oaks, Ca 91403
>>>http://www.worldwidewebstore.com
>>>Ph:818-905-6787
>>>Fax:818-905-6783
>>> Toll Free-888-999-7522
>>>ross@thewwwstore.com
>>
>
>Ross Markbreiter
>Director Sales
>The World Wide Web Store, Inc
>4351 Van Nuys Blvd.
>Sherman Oaks, Ca 91403
>http://www.worldwidewebstore.com
>Ph:818-905-6787
>Fax:818-905-6783
> Toll Free-888-999-7522
>ross@thewwwstore.com


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