Hello, On Thu, 21 Oct 2021, Alexis Vachette wrote: > Hello everyone, > > If this is not the correct list to address my issue feel free to tell me. > > We are heavily using Netfilter/IPVS with maglev scheduler algorithm > and it's working great on most use case. > > The only case when we face issue is when inhibit_on_failure option is enabled. > > Here is our setup: > > - 2 LVS director in active/passive mode > - 2 backend node > > Exposed service is SSH using port 2222. > > You can find below the LVS state when issue is occurring: > > root@dev-lvstest-01 ~ ❱ ipvsadm -L -n > IP Virtual Server version 1.2.1 (size=1048576) > Prot LocalAddress:Port Scheduler Flags > -> RemoteAddress:Port Forward Weight ActiveConn InActConn > TCP 172.16.42.170:2222 mh (mh-port) If inhibit_on_failure sets weight to 0 you may need to add the mh-fallback scheduler flag to allow traffic to use fallback server(s). > -> 172.16.42.168:2222 Route 100 0 0 > -> 172.16.42.169:2222 Route 0 0 0 > > Here is a working example output: > > root@dev-lvstest-01 ~ ❱ tail -f /var/log/kern.20211021 | grep "172.16.42.170" ... > Oct 21 09:17:34 dev-lvstest-01 kernel: [ 75.590633] IPVS: lookup > service: fwm 0 TCP 172.16.42.170:2222 hit > Oct 21 09:17:34 dev-lvstest-01 kernel: [ 75.590637] IPVS: mh: TCP > 172.16.42.170:2222 - no destination available Regards -- Julian Anastasov <ja@xxxxxx>
