Re: [quincy] Migrating ceph cluster to new network, bind OSDs to multple public_nework

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The OSDs are still only bound to one IP address.
After a reboot, the OSDs switched to the new address and are now
unreachable from the compute nodes.



Am Di., 22. Aug. 2023 um 09:17 Uhr schrieb Eugen Block <eblock@xxxxxx>:

> You'll need to update the mon_host line as well. Not sure if it makes
> sense to have both old and new network in there, but I'd try on one
> host first and see if it works.
>
> Zitat von Boris Behrens <bb@xxxxxxxxx>:
>
> > We're working on the migration to cephadm, but it requires some
> > prerequisites that still needs planing.
> >
> > root@host:~# cat /etc/ceph/ceph.conf ; ceph config dump
> > [global]
> > fsid = ...
> > mon_host = [OLD_NETWORK::10], [OLD_NETWORK::11], [OLD_NETWORK::12]
> > #public_network = OLD_NETWORK::/64, NEW_NETWORK::/64
> > ms_bind_ipv6 = true
> > ms_bind_ipv4 = false
> > auth_cluster_required = none
> > auth_service_required = none
> > auth_client_required = none
> >
> > [client....]
> > ms_mon_client_mode = crc
> > #debug_rgw = 20
> > rgw_frontends = beast endpoint=[OLD_NETWORK::12]:7480
> > rgw_region = ...
> > rgw_zone = ...
> > rgw_thread_pool_size = 512
> > rgw_dns_name = ...
> > rgw_dns_s3website_name = ...
> >
> > [mon....-new]
> > public_addr = fNEW_NETWORK::12
> > public_bind_addr = NEW_NETWORK::12
> >
> > WHO               MASK  LEVEL     OPTION
> > VALUE
> >                RO
> > global                  advanced  auth_client_required
> > none
> >                 *
> > global                  advanced  auth_cluster_required
> >  none
> >                 *
> > global                  advanced  auth_service_required
> >  none
> >                 *
> > global                  advanced  mon_allow_pool_size_one
> >  true
> > global                  advanced  ms_bind_ipv4
> > false
> > global                  advanced  ms_bind_ipv6
> > true
> > global                  advanced  osd_pool_default_pg_autoscale_mode
> > warn
> > global                  advanced  public_network
> > OLD_NETWORK::/64, NEW_NETWORK::/64
> >       *
> > mon                     advanced  auth_allow_insecure_global_id_reclaim
> >  false
> > mon                     advanced  mon_allow_pool_delete
> >  false
> > mgr                     advanced  mgr/balancer/active
> >  true
> > mgr                     advanced  mgr/balancer/mode
> >  upmap
> > mgr                     advanced  mgr/cephadm/migration_current
> 5
> >
> >              *
> > mgr                     advanced  mgr/orchestrator/orchestrator
> >  cephadm
> > mgr.0cc47a6df14e        basic     container_image
> >
> quay.io/ceph/ceph@sha256:09e527353463993f0441ad3e86be98076c89c34552163e558a8c2f9bfb4a35f5
> >  *
> > mgr.0cc47aad8ce8        basic     container_image
> >
> quay.io/ceph/ceph@sha256:09e527353463993f0441ad3e86be98076c89c34552163e558a8c2f9bfb4a35f5
> >  *
> > osd.0                   basic     osd_mclock_max_capacity_iops_ssd
> > 13295.404086
> > osd.1                   basic     osd_mclock_max_capacity_iops_ssd
> > 14952.522452
> > osd.2                   basic     osd_mclock_max_capacity_iops_ssd
> > 13584.113025
> > osd.3                   basic     osd_mclock_max_capacity_iops_ssd
> > 16421.770356
> > osd.4                   basic     osd_mclock_max_capacity_iops_ssd
> > 15209.375302
> > osd.5                   basic     osd_mclock_max_capacity_iops_ssd
> > 15333.697366
> >
> > Am Mo., 21. Aug. 2023 um 14:20 Uhr schrieb Eugen Block <eblock@xxxxxx>:
> >
> >> Hi,
> >>
> >> > I don't have those configs. The cluster is not maintained via cephadm
> /
> >> > orchestrator.
> >>
> >> I just assumed that with Quincy it already would be managed by
> >> cephadm. So what does the ceph.conf currently look like on an OSD host
> >> (mask sensitive data)?
> >>
> >> Zitat von Boris Behrens <bb@xxxxxxxxx>:
> >>
> >> > Hey Eugen,
> >> > I don't have those configs. The cluster is not maintained via cephadm
> /
> >> > orchestrator.
> >> > The ceph.conf does not have IPaddresses configured.
> >> > A grep in /var/lib/ceph show only binary matches on the mons
> >> >
> >> > I've restarted the whole host, which also did not work.
> >> >
> >> > Am Mo., 21. Aug. 2023 um 13:18 Uhr schrieb Eugen Block <eblock@xxxxxx
> >:
> >> >
> >> >> Hi,
> >> >>
> >> >> there have been a couple of threads wrt network change, simply
> >> >> restarting OSDs is not sufficient. I still haven't had to do it
> >> >> myself, but did you 'ceph orch reconfig osd' after adding the second
> >> >> public network, then restart them? I'm not sure if the orchestrator
> >> >> works as expected here, last year there was a thread [1] with the
> same
> >> >> intention. Can you check the local ceph.conf file
> >> >> (/var/lib/ceph/<FSID>/<SERVICE>/config) of the OSDs (or start with
> >> >> one) if it contains both public networks? I (still) expect the
> >> >> orchestrator to update that config as well. Maybe it's worth a bug
> >> >> report? If there's more to it than just updating the monmap I would
> >> >> like to see that added to the docs since moving monitors to a
> >> >> different network is already documented [2].
> >> >>
> >> >> Regards,
> >> >> Eugen
> >> >>
> >> >> [1] https://www.spinics.net/lists/ceph-users/msg75162.html
> >> >> [2]
> >> >>
> >> >>
> >>
> https://docs.ceph.com/en/quincy/cephadm/services/mon/#moving-monitors-to-a-different-network
> >> >>
> >> >> Zitat von Boris Behrens <bb@xxxxxxxxx>:
> >> >>
> >> >> > Hi,
> >> >> > I need to migrate a storage cluster to a new network.
> >> >> >
> >> >> > I added the new network to the ceph config via:
> >> >> > ceph config set global public_network "old_network/64,
> new_network/64"
> >> >> > I've added a set of new mon daemons with IP addresses in the new
> >> network
> >> >> > and they are added to the quorum and seem to work as expected.
> >> >> >
> >> >> > But when I restart the OSD daemons, the do not bind to the new
> >> >> addresses. I
> >> >> > would have expected that the OSDs try to bind to all networks but
> they
> >> >> are
> >> >> > only bound to the old_network.
> >> >> >
> >> >> > The idea was to add the new set of network config to the current
> >> storage
> >> >> > hosts, bind everything to ip addresses in both networks, shift over
> >> >> > workload, and then remove the old network.
> >> >> > _______________________________________________
> >> >> > 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
> >> >>
> >> >
> >> >
> >> > --
> >> > Die Selbsthilfegruppe "UTF-8-Probleme" trifft sich diesmal abweichend
> im
> >> > groüen Saal.
> >> > _______________________________________________
> >> > 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
> >>
> >
> >
> > --
> > Die Selbsthilfegruppe "UTF-8-Probleme" trifft sich diesmal abweichend im
> > groüen Saal.
> > _______________________________________________
> > 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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groüen Saal.
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