On Friday, March 13, 2026 2:43:15 PM Eastern Daylight Time Martin Gerhard
Loschwitz via ceph-users wrote:
> Folks,
>
> I have a setup here where a server has a single /32 IP from 10.1.0.0/16. It
> has a perfectly normal IP address and is reachable from within the local
> network thanks to EVPN. cephadm however only detects nonsense:
> {
> "fe80::/64": {
> "data1": [
> "fe80::425b:7fff:fec8:c956"
> ],
> "loopback0": [
> "fe80::1c54:fbff:fe6a:51e7"
> ]
> }
> }
>
> How can I set the networks the machine has manually so that it becomes
> usable for MON placement? At this time, ceph-mgr does not deploy additional
> MONs, for instance, because it claims that the host network does not match
> the public network, while I assume the host network is directly read from
> the „cephadm list-networks“ output.
> Thank you very much in advance
Could you share the outputs of:
* ip link show
* ip addr show
* ip route show
and
* cephadm list-networks
(or confirm that the snippet you shared above is the complete output of the
command)
Thanks!
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