Hi J-P, Could you please go to the Prometheus UI and share the output of the following query "node_network_mtu_bytes"? That'd be useful to understand the issue. If you can open a tracker issue here: https://tracker.ceph.com/projects/dashboard/issues/new ? In the meantime you should be able to mute the alert (Cluster > Monitoring > Silences). Kind Regards, Ernesto On Wed, Aug 4, 2021 at 5:49 PM J-P Methot <jp.methot@xxxxxxxxxxxxxxxxx> wrote: > Hi, > > We're running Ceph 16.2.5 Pacific and, in the ceph dashboard, we keep > getting a MTU mismatch alert. However, all our hosts have the same > network configuration: > > => bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 9000 qdisc > noqueue state UPgroup default qlen 1000 => vlan.24@bond0: > <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UPgroup > default qlen 1000 > > > Physical interfaces, bond andvlans are all setto9000. > > The alert's message looks like this : > > Node node20 has a different MTU size (9000) than the median value on > device vlan.24. > > Is this a known Pacific bug? None of our other Ceph clusters does this > (they are running on Octopus/Nautilus). > > -- > > Jean-Philippe Méthot > Senior Openstack system administrator > Administrateur système Openstack sénior > PlanetHoster inc. > > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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