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Diffstat (limited to 'doc/rados/operations/stretch-mode.rst')
| -rw-r--r-- | doc/rados/operations/stretch-mode.rst | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/doc/rados/operations/stretch-mode.rst b/doc/rados/operations/stretch-mode.rst index f797b5b91..787e8cb4d 100644 --- a/doc/rados/operations/stretch-mode.rst +++ b/doc/rados/operations/stretch-mode.rst @@ -121,8 +121,6 @@ your CRUSH map. This procedure shows how to do this. rule stretch_rule { id 1 - min_size 1 - max_size 10 type replicated step take site1 step chooseleaf firstn 2 type host @@ -141,11 +139,15 @@ your CRUSH map. This procedure shows how to do this. #. Run the monitors in connectivity mode. See `Changing Monitor Elections`_. + .. prompt:: bash $ + + ceph mon set election_strategy connectivity + #. Command the cluster to enter stretch mode. In this example, ``mon.e`` is the tiebreaker monitor and we are splitting across data centers. The tiebreaker monitor must be assigned a data center that is neither ``site1`` nor - ``site2``. For this purpose you can create another data-center bucket named - ``site3`` in your CRUSH and place ``mon.e`` there: + ``site2``. This data center **should not** be defined in your CRUSH map, here + we are placing ``mon.e`` in a virtual data center called ``site3``: .. prompt:: bash $ |