On Mon, Oct 24, 2016 at 03:14:59PM +0000, James Stroehmann wrote: > We have updated our test instance of HAProxy to 1.6.9 but are still able to > reproduce the issue. > > > From: Stroehmann, James > Sent: Friday, October 07, 2016 2:44 PM > To: [email protected] > Subject: Issue with windows IE 11 and Edge > > We have a website that is setup like this: > > CDN -> HAPROXY -> ELB -> APACHE -> TOMCAT > > We are seeing with IE11 and Edge clients they will randomly lose their > session and get kicked out to a login screen. Firefox, Chrome and older IE > clients appear unaffected. Testing at all the different layers, we can > reproduce against the HAProxy and CDN layers, but not the ELB/Apache/Tomcat > layers, which leads us to believe the problem lies at the HAProxy layer.We > are using HA-Proxy version 1.6.3 2015/12/25, compiled from source. I'm not > seeing any errors in the haproxy logs, any ideas as to where to start > troubleshooting?
Well technically speaking what can be said is that adding CDN+haproxy triggers the problem. Without your config it's very hard to have any idea about this. It will be important to see how you perform your stickiness, how health checks are performed (because if your apache servers are regularly seen up and down from haproxy, for sure the users will be redistributed to another location). Also have you looked at your haproxy stats to see if your servers are seen down from time to time ? And what do you see in haproxy logs for users affected with the problem ? The termination flags should almost always be "--". If you often see something different, it might indicate an issue somewhere in the chain. Most often with cookie insertion, you'll see "--NI" for new users getting a new cookie, and "--VN" for existing visitors posting a valid cookie. Anything else should be studied. Regards, Willy
