doc/rados: fix sentences in health-checks (3 of x)

Make sentences agree at the head of each section in
doc/rados/operations/health-checks.rst. The sentences were sometimes in
the imperative mood and sometimes in the declarative mood.

This commit edits the second third of
doc/rados/operations/health-checks.rst.

Note to (I hope soon) future Zac: There are a a couple of places near
the end of this file where the sentences are ungrammatical. Update these
in a separate PR (in isolation, so that the grammar and technical
accuracy of these sentences can be the primary focus of the reviewers).

Zac: cf. 000228

Signed-off-by: Zac Dover <zac.dover@proton.me>
(cherry picked from commit 97df4479d90b7f1b659b71ac172ff1094d58a50e)

diff --git a/doc/rados/operations/health-checks.rst b/doc/rados/operations/health-checks.rst
index 8973af7dbe9ed12cfae6904cc8f249d5c6ff6356..647cf36496ab5cb37ba99220decca8e28c954eb7 100644 (file)
--- a/doc/rados/operations/health-checks.rst
+++ b/doc/rados/operations/health-checks.rst
@@ -1418,8 +1418,8 @@ resolution, see :ref:`storage-capacity` and :ref:`no-free-drive-space`.
 OBJECT_MISPLACED
 ________________
 
-One or more objects in the cluster are not stored on the node that CRUSH would
-prefer that they be stored on. This alert is an indication that data migration
+One or more objects in the cluster are not stored on the node that CRUSH
+prefers that they be stored on. This alert is an indication that data migration
 due to a recent cluster change has not yet completed.
 
 Misplaced data is not a dangerous condition in and of itself; data consistency
@@ -1618,9 +1618,10 @@ Stretch Mode
 INCORRECT_NUM_BUCKETS_STRETCH_MODE
 __________________________________
 
-Stretch mode currently only support 2 dividing buckets with OSDs, this warning suggests
-that the number of dividing buckets is not equal to 2 after stretch mode is enabled.
-You can expect unpredictable failures and MON assertions until the condition is fixed.
+Stretch mode currently only support 2 dividing buckets with OSDs, this warning
+suggests that the number of dividing buckets is not equal to 2 after stretch
+mode is enabled.  You can expect unpredictable failures and MON assertions
+until the condition is fixed.
 
 We encourage you to fix this by removing additional dividing buckets or bump the
 number of dividing buckets to 2.
@@ -1637,6 +1638,27 @@ We encourage you to fix this by making the weights even on both dividing buckets
 This can be done by making sure the combined weight of the OSDs on each dividing
 bucket are the same.
 
+NVMeoF Gateway
+--------------
+
+NVMEOF_SINGLE_GATEWAY
+_____________________
+
+One of the gateway group has only one gateway. This is not ideal because it
+makes high availability (HA) impossible with a single gatway in a group. This
+can lead to problems with failover and failback operations for the NVMeoF
+gateway.
+
+It's recommended to have multiple NVMeoF gateways in a group.
+
+NVMEOF_GATEWAY_DOWN
+___________________
+
+Some of the gateways are in the GW_UNAVAILABLE state. If a NVMeoF daemon has
+crashed, the daemon log file (found at ``/var/log/ceph/``) may contain
+troubleshooting information.
+
+
 Miscellaneous
 -------------