Jan Friesse <[email protected]> writes: > If you want to stay with multicast, there are plenty problems you may > be affected with. > > - Default ttl for multicast is 1, so if you are using routing, you > should increase is (in corosync.conf it's totem.interface.ttl > option. For debugging, you can try omping, because omping has ttl set > to 64.
The routing is local to the VM using corosync to be sure packets are
outputed by eth1.
> - Most routers/clever switches blocks multicast/don't allow multicast
> routing. I don't know exact vSwitch behavior
Multicast packets work with Open vSwitch, the VM with only one network
card is part of the corosync ring.
I do not understand why on a VM with two network cards, corosync using
the second card (eth1) and the default route using the fisrt one (eth0),
the corosync can not integrate the ring.
On one working host:
root@nebula3:~# corosync-quorumtool
Quorum information
------------------
Date: Fri Nov 7 14:42:43 2014
Quorum provider: corosync_votequorum
Nodes: 4
Node ID: 1084811080
Ring ID: 20508
Quorate: Yes
Votequorum information
----------------------
Expected votes: 4
Highest expected: 4
Total votes: 4
Quorum: 3
Flags: Quorate WaitForAll LastManStanding
Membership information
----------------------
Nodeid Votes Name
1084811078 1 nebula1.eole.lan
1084811079 1 nebula2.eole.lan
1084811080 1 nebula3.eole.lan (local)
1084811118 1 quorum.eole.lan
On the failing node:
root@one-frontend:~# corosync-quorumtool
Quorum information
------------------
Date: Fri Nov 7 14:42:37 2014
Quorum provider: corosync_votequorum
Nodes: 1
Node ID: 1084811119
Ring ID: 20264
Quorate: No
Votequorum information
----------------------
Expected votes: 3
Highest expected: 3
Total votes: 1
Quorum: 2 Activity blocked
Flags: WaitForAll LastManStanding
Membership information
----------------------
Nodeid Votes Name
1084811119 1 one-frontend.eole.lan (local)
The “Ring ID” is not the same.
Regards.
--
Daniel Dehennin
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