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rgw: add documentation for upgrading with rgw_region_root_pool
Signed-off-by: Orit Wasserman <owasserm@redhat.com>
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@ -9,12 +9,18 @@ Upgrade of :term:`Ceph Object Gateway` to older versions of jewel (up to 10.2.3
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Mixed version of :term:`Ceph Object Gateway` is not supported
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Backup of old configuration
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================
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===========================
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rados mkpool .rgw.root.backup
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rados cppool .rgw.root .rgw.root.backup
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Non default setting for `rgw region root pool`
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==============================================
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If an existing multisite configuration uses a non-default setting for
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`rgw region root pool`, the new pool settings `rgw zonegroup root pool`,
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`rgw period root pool` and `rgw realm root pool` should be set to match.
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Fix confgiuration after upgrade
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================
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===============================
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Stop all :term:`Ceph Object Gateway` running in the cluster.
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Run the following commands:::
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