Sorry, I forgot to mention that we are running HAProxy 1.7.3-1ppa1~xenial, released 2017/03/01, on Ubuntu 16.04, in EC2.
On Fri, Mar 31, 2017 at 8:19 AM, Patrick Kaeding <[email protected]> wrote: > Hi all > > I am trying to determine the cause of an issue where the number of > frontend connections is much higher than the number of backend connections. > > I have one frontend, listening on port 443, and two backends, which send > traffic to either port 5050 or 5051. The haproxy stats screen is showing > many more frontend connections than backend (in one case, 113k on the > frontend, 97k on one backend, and 3k on the other backend). > > netstat confirms that there are more connections to the frontend than to > the sum of the backends (but it shows a higher number than haproxy reports): > > ubuntu@ip-10-10-7-135:~$ netstat -an |grep 5050|wc -l > 2718 > ubuntu@ip-10-10-7-135:~$ netstat -an |grep 5051|wc -l > 88413 > ubuntu@ip-10-10-7-135:~$ netstat -an |grep 10.10.7.135:443|wc -l > 170442 > > My first thought was that the connection to the clients was being kept > open to be reused for more HTTP/1.1 requests, but we have 'option > forceclose' in the defaults section of the haproxy config. > > Any ideas? > > -- > Patrick Kaeding > [email protected] > -- Patrick Kaeding [email protected]
