Re: Access cephfs from second public network

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Hello,

if you want to use multiple IP networks, just use IP routing. Today's
switches support such a feature in line rate with great performance.
Please keep your firewall/security layer in mind when you use routed networks.

I don't believe it would be possible to use any other proxy /
modification / ... technology to connect as a Ceph client to a Ceph
storage within a different IP network.

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Am Fr., 22. März 2019 um 11:32 Uhr schrieb Andres Rojas Guerrero
<a.rojas@xxxxxxx>:
>
> Hi, thank's for the answer, we have seen that the client only have OSD
> map for first public network ...
>
> # cat
> /sys/kernel/debug/ceph/88f62260-b8de-499f-b6fe-5eb66a967083.client360894/osdmap
>
>
> you say that the cepfs clients have the same view of the cluster that
> have de MON's, that's mean that MON's doesn't have the right vision of
> the OSD from the second public network?
>
>
>
>
> On 22/3/19 9:54, Burkhard Linke wrote:
> > Hi,
> >
> >
> > just my 2 ct:
> >
> >
> > Clients do not access the MDS directly, e.g. you do not use the IP
> > address of a MDS in the mount command.
> >
> >
> > Clients contact the MONs and retrieve the MDS map, which contains all
> > filesystems and their corresponding MDS server(s). The same is also true
> > for the OSDs. The clients thus use the MONs' view of the cluster. I'm
> > not familar with multiple IP address setups, but I would bet that a
> > client is not able to select the correct public network.
> >
> >
> > You can check your setup on the OSD/MDS hosts (are the OSDs/MDSs bound
> > to the second network at all?), and in /sys/kernel/debug/ceph/<ceph
> > client id>. The later contains the current versions of the MON map, MDS
> > map and OSD map. These are the settings used by the client to contact
> > the corresponding daemon (assuming kernel cephfs client, ceph-fuse is
> > different).
> >
> >
> > Regards,
> >
> > Burkhard
> >
>
> --
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> Andrés Rojas Guerrero
> Unidad Sistemas Linux
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