2018-02-20T10:05:51+00:00 Loadblanacer loadbalancer[30210]: [default]: [local0.info] 1.1.1.1 - - [20/Feb/2018:10:05:50 +0000] "GET /test/dashboard HTTP/1.1" 502 8396 "" "" 65498 971 "VIP~" "Backend-pool" "SRV3346" 47 0 1 -1 537 PH-- 0 0 0 0 0 0 0 "" ""
VMware NSX Data Center For vSphere
A payload should not be more that 16KB URL+Cookie. If the payload is too big the Load Balancer will fail with flag PH--.
There's no resolution to this issue.
Workaround in 6.4.x:
PUT http://<Manager>/api/4.0/edges/<edge-id>/systemcontrol/config
<systemControl>
<enabled>true</enabled>
<property>lb.global.tune.bufsize=34816</property>
</systemControl>