cephadm: RGW migration from empty realm

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Hi RGW experts,

As cephadm doesn't support an empty realm right now, we need to find a
solution.

Right now, I can see two ways forward for users to migrate to cephadm:

1. add the possibility to create a cephadm services without realm
2. provide a documented way to migrate existing zones without realm

What do you prefer?

Best,
Sebastian



Am 02.06.20 um 19:34 schrieb Andy Goldschmidt:
> Hi
> I am trying to upgrade from Mimic (13.2.10) to Octopus (15.x).   Im also tryin to sue cephadm and am following this guide.https://docs.ceph.com/docs/master/cephadm/adoption/
> 
> It was all going fine until step 11 and deploying the new RGW's.  I don't have any realms set for my cluster, so how do I do it? This is also a single site cluster.
> # radosgw-admin realm list{    "default_info": "",    "realms": []}
> # radosgw-admin zone list{    "default_info": "a15e2aec-a0da-4cad-a1bd-f448f25bbe3d",    "zones": [        "default"    ]}
> 
> 
> The step below is what I don't know what to do, as it says I need to specify the realm.
> 
> 11. Redeploy RGW daemons. Cephadm manages RGW daemons by zone. For each zone, deploy new RGW daemons with cephadm:
> # ceph orch apply rgw <realm> <zone> <placement> [--port <port>] [--ssl]
> my ceph.conf has this in it about the rgw's[client.rgw.ceph-mgmt0]host = ceph-mgmt0keyring = /var/lib/ceph/radosgw/ceph-rgw.ceph-mgmt0/keyringlog file = /var/log/ceph/ceph-rgw-ceph-mgmt0.logrgw frontends = civetweb port=10.92.135.40:8080 num_threads=100rgw dns name = library.xxxxx.com
> [client.rgw.ceph-mgmt1]host = ceph-mgmt1keyring = /var/lib/ceph/radosgw/ceph-rgw.ceph-mgmt1/keyringlog file = /var/log/ceph/ceph-rgw-ceph-mgmt1.logrgw frontends = civetweb port=10.92.135.41:8080 num_threads=100rgw dns name = library.xxxxx.com
> [client.rgw.ceph-mgmt2]host = ceph-mgmt2keyring = /var/lib/ceph/radosgw/ceph-rgw.ceph-mgmt2/keyringlog file = /var/log/ceph/ceph-rgw-ceph-mgmt2.logrgw frontends = civetweb port=10.92.135.42:8080 num_threads=100rgw dns name = library.xxxxx.com
> RegardsAndy
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