[PVE-User] Whole cluster brokes

Daniel daniel at linux-nerd.de
Wed Mar 8 12:51:31 CET 2017


there are absolutly no network changes at all.

I got some strange errors:

omping: Can't get addr info for omping: Name or service not known

On Host01 it ts working with 
omping -c 10 -i 1 -q

On host host2 I did with error:

omping -c 10 -i 1 -q

And then I got the error omping: Can't get addr info for omping: Name or service not known

I cant absolutely understand what is happening here.
All Servers has the same Network config.


Am 08.03.17, 12:39 schrieb "pve-user im Auftrag von Thomas Lamprecht" <pve-user-bounces at pve.proxmox.com im Auftrag von t.lamprecht at proxmox.com>:

    On 03/08/2017 11:38 AM, Daniel wrote:
    > Hi,
    > when i try the command with 2 NODES i got the follwing Error.
    > So it seems realy to be a multicast problem.
    > root at host01:~# omping -c 10 -i 1 -q
    > : waiting for response msg
    > : waiting for response msg
    Command is ok like this, thje one from your other mail is not.
    But you have to start it on both the node with IP *and* the 
    one with to make it work.
    > I cant restart pve-cluster – I get errors. Corosync was not restarted yet – And yes – actually I don’t have HA configured yet.
    > Is there any special command to restart Corosync?
    systemctl restart corosync
    > Should this help when I try to do on one node?
    > echo 1 > /sys/devices/virtual/net/vmbr0/bridge/multicast_querier
    Yes, you can try that.
    > I am not sure what how long the cluster was working after 13 was shutdown.
    Changes on the switch/network?
    > ok it seems that Multicast is not working anymore. But how can this happen? It was working before without any trouble.
    As said, or changes in the network or that the other node really acted as a
    multicast querier.
    But omping looks like no multicast is working at all, with a missing 
    querier you
    would get problems after about 5 minutes but before that it should work.
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