Hi again list,

This has been working fairly well for awhile but I noticed that the connection 
counter for the server designated as backup seems to be incrementing:

State   CurrConn    TotConn

Now:

6          0   18836538

Yesterday afternoon:

6          0   18836021

Yesterday morning:

6          1   18835960

So you can see that the backup server has gotten about 578 connections in the 
past 24 hours but there haven't been any messages logged about the 
primary/active server being down due to healthcheck, reassign, or anything else.

Is there some kind of other metric the load balancer uses to decide when to 
send traffic to the designated backup? or will it send traffic to the backup if 
it sees a problem without logging any message about the primary server?

Thanks for any advice on this matter.

-Drew





From: Scott T. Cameron [mailto:[email protected]]
Sent: Tuesday, April 19, 2011 1:42 PM
To: Drew Weaver
Cc: [email protected]
Subject: Re: [f-nsp] ServerIron: direct requests to alternate server if all 
real servers are down.

There's a lot of variables involved with that question.  Depends on how the 
server is going down (loss of power, health check, etc).  Because there are so 
many different reasons it could take a large amount of time to come back 
online, any suggestions are bad guesses.

Things to keep in mind:

- you may have no-fast-bringup globally or on a specific port
- your health check may be waiting on something else to bring up the port
- you may have sticky persistence

etc.

Scott
On Tue, Apr 19, 2011 at 8:01 AM, Drew Weaver 
<[email protected]<mailto:[email protected]>> wrote:
Hi Scott,

Thank you for that tip that got me where I needed to be.

My last question is it seems to take rather a long time (3-4 minutes) for it to 
switch back to the main servers after they come back up.

Is there some way to make that faster?

thanks,
-Drew


From: Scott T. Cameron [mailto:[email protected]<mailto:[email protected]>]
Sent: Monday, April 18, 2011 8:38 PM
To: Drew Weaver
Cc: [email protected]<mailto:[email protected]>
Subject: Re: [f-nsp] ServerIron: direct requests to alternate server if all 
real servers are down.

backup is correct.

You need to add 'port # lb-pri-servers' on the vserver.

Scott
On Mon, Apr 18, 2011 at 8:19 PM, Drew Weaver 
<[email protected]<mailto:[email protected]>> wrote:
Hi,

How can you make a serveriron XL send requests to a different server only if 
the primary server(s) fail healthchecks?

I tried setting the secondary server as a backup server but the load balancer 
was balancing traffic between the primary servers and the 'Backup server' I 
only want requests to be sent to the backup server in the event the other real 
servers are offline.
Thanks,
-Drew

_______________________________________________
foundry-nsp mailing list
[email protected]<mailto:[email protected]>
http://puck.nether.net/mailman/listinfo/foundry-nsp


_______________________________________________
foundry-nsp mailing list
[email protected]
http://puck.nether.net/mailman/listinfo/foundry-nsp

Reply via email to