------------------------------
Hello Janne,
We only have a single network configured for our OSDs:
```sh
ceph config get osd public_network172.20.180.0/24
ceph config get osd cluster_network172.20.180.0/24
```
However, in the output of ceph health detail, we see multiple networks
being checked:
```sh
ceph health detail
HEALTH_OK (muted: OSD_UNREACHABLE)
(MUTED, STICKY) [ERR] OSD_UNREACHABLE: 32 osds(s) are not reachable
osd.0's public address is not in '172.20.180.1/32,172.20.180.0/24' subnet
```
We are unsure where 172.20.180.1/32 is coming from.
Any ideas on where to look next?
Thanks for your response.
пн, 24 мар. 2025 г. в 09:45, Janne Johansson <icepic...@gmail.com>:
> > Hello everyone,
> >
> > After upgrading our Ceph cluster from 17.2.7 to 17.2.8 using `cephadm`,
> all
> > OSDs are reported as unreachable with the following error:
> >
> > ```
> > HEALTH_ERR 32 osds(s) are not reachable
> > [ERR] OSD_UNREACHABLE: 32 osds(s) are not reachable
> > osd.0's public address is not in '172.20.180.1/32,172.20.180.0/24'
> > subnet
> > osd.1's public address is not in '172.20.180.1/32,172.20.180.0/24'
> > subnet
> > ...
> > osd.31's public address is not in '172.20.180.1/32,172.20.180.0/24'
> > subnet
> > ```
> >
> > However, all OSDs actually have IP addresses within the `
> 172.20.180.0/24` <http://172.20.180.0/24>
> > subnet. The cluster remains functional (CephFS is accessible), and muting
> > the warning with `ceph health mute OSD_UNREACHABLE --sticky` allows
> normal
> > operation, but the underlying issue persists.
>
> > ### **Questions**
> > 1. Has anyone else encountered this issue after upgrading to 17.2.8?
>
> Yes, we ran into it also. It "only" reads the first entry and skips
> the second (and third and so on)
>
> > 2. Is this a known regression? (This seems similar to issue #67517.)
> > 3. Would upgrading to Ceph 18.x (Reef) resolve the problem?
> > 4. Is there any solution other than muting the health warning?
>
> We widened the netmask to cover both nets so we would have them in one
> definition.
>
> --
> May the most significant bit of your life be positive.
>
--
С уважением,
Илья Безруков
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