Nicolas Costes wrote: >>> Is your multicast working correctly? >> How can I check ?
Easiest way I can think of: 1. Have a look at the joined mcast-groups, e.g: root@vm1:~# netstat -g | grep vmbr14 vmbr14 1 239.192.32.212 vmbr14 1 all-systems.mcast.net vmbr14 1 ff02::202%6423424 vmbr14 1 ff02::1:ff2b:3324%6423424 vmbr14 1 ip6-allnodes vmbr14 1 ff01::1%6423424 If you have nothing similar to the first entry, there's a problem with joining the mcast-group. And then, on your other cluster members: root@vm2:~# tcpdump -i vmbr14 host 239.192.32.212 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on vmbr14, link-type EN10MB (Ethernet), capture size 65535 bytes 10:54:12.343763 IP vm1.5404 > 239.192.32.212.5405: UDP, length 119 10:54:12.579970 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 75 10:54:12.581167 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 1473 10:54:12.581184 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 1473 10:54:12.581190 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 1473 10:54:12.581196 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 1473 10:54:12.581201 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 338 10:54:12.583360 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 766 10:54:12.599887 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 1390 10:54:12.600991 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 1389 10:54:12.811843 IP vm1.5404 > 239.192.32.212.5405: UDP, length 119 10:54:12.838775 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 75 10:54:12.839954 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 1473 10:54:12.839970 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 848 10:54:12.841340 IP vm-iec.5404 > 239.192.32.212.5405: UDP, length 1161 10:54:13.052364 IP vm1.5404 > 239.192.32.212.5405: UDP, length 119 10:54:13.818986 IP vm21.5404 > 239.192.32.212.5405: UDP, length 75 You should see a lot of communication between all your clustermembers. Of course you have to replace vmbr14 in the above examples with the interface your clustercommunication should use. If you have joins, but no communication, you should maybe check your firewall settings. Best regards, Kurt > > Ok, I found it, reading https://pve.proxmox.com/wiki/Multicast_notes . On > both > nodes : > > # omping -m 239.192.205.35 yin hongcha > > > [...] > yin : unicast, seq=115, size=69 bytes, dist=0, time=0.385ms > yin : unicast, seq=116, size=69 bytes, dist=0, time=0.384ms > yin : unicast, seq=117, size=69 bytes, dist=0, time=0.390ms > > yin : unicast, xmt/rcv/%loss = 117/117/0%, min/avg/max/std-dev = > 0.312/0.373/0.407/0.022 > yin : multicast, xmt/rcv/%loss = 117/0/100%, min/avg/max/std-dev = > 0.000/0.000/0.000/0.000 > > So, no multicast, only unicast, right ? > > > _______________________________________________ pve-user mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
