IPVS (keepalived) doesn't balance UDP connections
Solution 1:
virtual_server 10.20.20.195 12333 {
delay_loop 60
protocol UDP
lb_algo wrr
lb_kind DR
ops # <<< - Try this. Works for me (Ubuntu 18.04, Keepalived v1.3.9, ipvsadm v1.28)
real_server 10.20.20.196 12333 {
Option ops for me works only if either:
- Virtual server port is explicitly defined.
-
fwmarkis used together with in virtual_server definition.
Does not work for virtual_server_IP 0 form - in that case ipvsadm -Ln shows that persistent option is used as well.