> -----Original Message----- > From: Prasanna Santhanam [mailto:prasanna.santha...@citrix.com] > Sent: 04 July 2013 17:10 > To: dev@cloudstack.apache.org > Cc: aemne...@gmail.com > Subject: Re: Verifying Load Balancer logic > > On Thu, Jul 04, 2013 at 10:21:55AM +0000, Ram Ganesh wrote: > > This could happen if there is a stickiness policy configured on the LB rule. > > This is the basic round-robin on a VR, we don't use any stickiness policy on > this.
Could be a bug in HAproxy. > > > > > > -----Original Message----- > > > From: Ahmad Emneina [mailto:aemne...@gmail.com] > > > Sent: 04 July 2013 15:39 > > > To: dev@cloudstack.apache.org > > > Subject: Re: Verifying Load Balancer logic > > > > > > why would we remove these cases and not find the root cause, if > > > there is an issue, and fixing that. > > > > Not the test cases, just the haproxy lb verification where we ssh and detect > that the hostname we get back is different each time, ascertaining that we > are going round robin. > > > > > > > On Thu, Jul 4, 2013 at 2:59 AM, Girish Shilamkar <gir...@clogeny.com> > wrote: > > > > > > > Hello, > > > > > > > > Some of the BVT test cases verify if load balancing rule set to > > > > round robin is working or not. > > > > It is seen that often LBing is not perfect round robin. If first > > > > request goes to one vm the next does not always go to second, when > > > > there are just two vms added to LB rule. > > This test is not consistent. I separated the suite and added some more logs > for the multiple ssh attempts we do in the test. The test passed on a KVM > setup and fails on XCP,Xen. > > http://jenkins.buildacloud.org/view/cloudstack-qa/job/test-smoke- > matrix/suite=test_loadbalance/lastCompletedBuild/testReport/ > > It's possible that the ssh connection closes when you make a second attempt > and that's why haproxy (having no active connections) redirects to the same > host repeatedly. But I'm only guessing. If there's anyone familiar with > haproxy behaviour, they could throw some light here. > > -- > Prasanna.,
