Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 44 insertions, 0 deletions

diff --git a/doc/radosgw/archive-sync-module.rst b/doc/radosgw/archive-sync-module.rst
new file mode 100644
index 000000000..b121ee6b1
--- /dev/null
+++ b/doc/radosgw/archive-sync-module.rst
@@ -0,0 +1,44 @@
+===================
+Archive Sync Module
+===================
+
+.. versionadded:: Nautilus
+
+This sync module leverages the versioning feature of the S3 objects in RGW to
+have an archive zone that captures the different versions of the S3 objects
+as they occur over time in the other zones.
+
+An archive zone allows to have a history of versions of S3 objects that can
+only be eliminated through the gateways associated with the archive zone.
+
+This functionality is useful to have a configuration where several
+non-versioned zones replicate their data and metadata through their zone
+gateways (mirror configuration) providing high availability to the end users,
+while the archive zone captures all the data updates and metadata for
+consolidate them as versions of S3 objects.
+
+Including an archive zone in a multizone configuration allows you to have the
+flexibility of an S3 object history in one only zone while saving the space
+that the replicas of the versioned S3 objects would consume in the rest of the
+zones.
+
+
+
+Archive Sync Tier Type Configuration
+------------------------------------
+
+How to Configure
+~~~~~~~~~~~~~~~~
+
+See `Multisite Configuration`_ for how to multisite config instructions. The
+archive sync module requires a creation of a new zone. The zone tier type needs
+to be defined as ``archive``:
+
+::
+
+    # radosgw-admin zone create --rgw-zonegroup={zone-group-name} \
+                                --rgw-zone={zone-name} \
+                                --endpoints={http://fqdn}[,{http://fqdn}]
+                                --tier-type=archive
+
+.. _Multisite Configuration: ../multisite