Hi everybody,
I've got a problem with join two nodes with corosync when using multicast.
I've got 2 nodes:
A:10.40.129.209
B:10.40.129.210
interface in corosync.conf
interface {
# The following values need to be set based on your environment
ringnumber: 0
bindnetaddr: 10.40.128.0
mcastaddr: 224.0.0.187
mcastport: 5465
}
Here is tcpdump on node A.
At first corosync is up on node A, I see it sends messages to multicast:
10:33:55.724608 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
10:33:55.958984 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
10:33:56.193231 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
10:33:56.427601 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
10:33:56.661914 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
10:33:56.896153 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
10:33:57.130481 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
10:33:57.364852 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
10:33:57.599081 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 82
Now I stared corosync on instance B
10:33:57.612370 IP 10.40.129.210.5464 > 224.0.0.187.5465: UDP, length 112
10:33:57.612473 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:57.681781 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:57.750903 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:57.820029 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:57.823920 IP 10.40.129.210.5464 > 224.0.0.187.5465: UDP, length 82
10:33:57.890109 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:57.959233 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.028354 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.058154 IP 10.40.129.210.5464 > 224.0.0.187.5465: UDP, length 82
10:33:58.098350 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.167477 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.236598 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.292490 IP 10.40.129.210.5464 > 224.0.0.187.5465: UDP, length 82
10:33:58.306685 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.375919 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.445041 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.514163 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.526730 IP 10.40.129.210.5464 > 224.0.0.187.5465: UDP, length 82
10:33:58.583924 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.653048 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.666071 IP 10.40.129.210.5464 > 224.0.0.187.5465: UDP, length 38
10:33:58.722251 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.791379 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
10:33:58.860500 IP 10.40.129.209.5464 > 224.0.0.187.5465: UDP, length 156
As you can see mutlicast traffic is visible on both nodes, but cluster wont to join, it keep sending packet of length 82 and 156 continously.
Any idea how can I debug this strange situation ? In logs there is no any errors, it seem that nodes doesnt see each other, but multicast traffic is visible on both.
What is more, as you can see above, when i run second instance corosync on node B, node A see it because it send diffrent mesage of length 156 b.
Any help ?
Thank in advance
Andrew
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