Hi Ernesto,


thanks for pointing me in the right direction. I have also found a bug report 
for the issue:



https://tracker.ceph.com/issues/52002



But maybe I'm misunderstanding this whole network setup. Let's say I'm starting 
to get confused.



For example:



I have started a very small deployment of a 3 node (4 nodes if you include the 
cephadm bootstrap node) cluster. I wanted to do this by best practice, and so I 
created a bond (XOR) for my 10G nics and a VLAN for public (192.168.30.0/24) 
and one for cluster (192.168.41.0/24). I would like to add additional networks 
(VLANs) later on for varios service e.g. ISCSI etc. The hosts FQDN are not 
pointing to 192.168.30.x but to another network where all our hosts reside that 
are deployed via kickstart. Do I have to ensure that the ceph hosts FQDN points 
to the 192.168.30 network or is this just for conveniance? I don't mind using 
the IP of the active mgr to visit the dashboard, but I guess this kind of 
breaks the idea of having  redundancy in case the active mgr fails. I would 
then have to check who is the active mgr and use it's 192.168.30.x ip adress.



Best Regards,

Oliver


Am 31. August 2021 um 12:16 schrieb Ernesto Puerta <[email protected]>:


Hi Oliver,


This issue has already been discussed in this mailing list ([1] and [2]). There 
you can find the details and steps to deal with it.


Kind Regards,
Ernesto




On Mon, Aug 16, 2021 at 12:51 PM Oliver Weinmann <[email protected]> wrote:

Dear All,



after a very smooth upgrade from 16.2.4 to 16.2.5 (CentOS 8 Stream), we are no 
longer able to access the dashboard. The dashboard was accessible before the 
upgrade. I googled and found a command to change the listening IP for the 
dashboard, but I wonder why the upgrade should have changed this?



https://people.redhat.com/bhubbard/nature/default/mgr/dashboard/


ceph mgr services
{
    "dashboard": "https://192.168.30.198:8443/";,
    "prometheus": "http://192.168.30.198:9283/";
}



Just for testing I change the IP of the dashboard and now I can access it and 
log in but then there is no data, no menu display. I assume this is because 
prometheus IP also needs to be changed? But before I do this, I would like to 
understand why this was changed during the upgrade.



Best Regards,

Oliver


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