Upstream "Sticky Connections?"

mevans336 nginx-forum at
Wed Jul 18 13:51:43 UTC 2012

Hello Everyone,

We are currently using Nginx 1.2.1 to terminate SSL and to load balance
between two JBoss servers.

Here is my upstream block:

upstream jboss_servers {

The issue we're having is such -- When a user is connected to Nginx,
Nginx will proxy the connection to one of the two backend servers, for
example If we take that server offline (by stopping
JBoss) the user is directed to the server and their
session is broken, requiring them to login again. We understand and
accept this.

However, when server is brought back online, Nginx is then
redirecting their session back to that server, breaking their session
and requiring them to login yet again.

Is there a directive I can use to prevent this behavior? I've seen this
referred to in other places as sticky sessions, does Nginx support a
similar method?

Posted at Nginx Forum:,228685,228685#msg-228685

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