RS: Add extra output field names and descriptions to rladmin status reference (#1191)

* DOC-4357 RS: Add output field names and descriptions to rladmin status extra all reference

* DOC-4357 Added table intro text & some copy edits

Author: rrelledge

content/operate/rs/references/cli-utilities/rladmin/status.md

@@ -50,6 +50,8 @@ If `issues_only` is specified, it only shows instances that do not have an `OK`
 
 In the `CLUSTER NODES` section, `*node` indicates which node you are connected to.
 
+For descriptions of the fields returned by `rladmin status extra all`, see the output tables for [nodes](#returns-nodes), [databases](#returns-dbs), [endpoints](#returns-endpoints), and [shards](#returns-shards).
+
 ### Example
 
 ``` sh
@@ -112,14 +114,33 @@ rladmin status databases
 | extra state_machine | Shows execution of state machine information  |
 | extra watchdog | Shows watchdog status  |
 
-### Returns
+### Returns {#returns-dbs}
 
 Returns a table of the status of all databases on the cluster.
 
 If `sort <column_titles>` is specified, the result is sorted by the specified table columns.
 
 If `issues_only` is specified, it only shows databases that do not have an `OK` status.
 
+The following table describes the fields returned by `rladmin status databases extra all`:
+
+| Field | Description |
+|-------|-------------|
+| DB:ID | Database ID |
+| NAME | Database name |
+| TYPE | Database type: Redis or Memcached |
+| STATUS | Database status |
+| SHARDS | The number of primary shards in the database |
+| PLACEMENT | How the shards are spread across nodes in the cluster, densely or sparsely |
+| REPLICATION | Is replication enabled for the database |
+| PERSISTENCE | Is persistence enabled for the database |
+| ENDPOINT | Database endpoint |
+| EXEC_STATE |  The current state of the state machine |
+| EXEC_STATE_MACHINE | The name of the running state machine |
+| BACKUP_PROGRESS | The database’s backup progress |
+| MISSING_BACKUP_TIME | How long ago a backup was done |
+| REDIS_VERSION | The database’s Redis version |
+
 ### Example
 
 ``` sh
@@ -166,14 +187,26 @@ rladmin status endpoints
 | extra state_machine | Shows execution of state machine information  |
 | extra watchdog | Shows watchdog status  |
 
-### Returns
+### Returns {#returns-endpoints}
 
 Returns a table of the status of all endpoints on the cluster.
 
 If `sort <column_titles>` is specified, the result is sorted by the specified table columns.
 
 If `issues_only` is specified, it only shows endpoints that do not have an `OK` status.
 
+The following table describes the fields returned by `rladmin status endpoints extra all`:
+
+| Field | Description |
+|-------|-------------|
+| DB:ID | Database ID |
+| NAME | Database name |
+| ID | Endpoint ID |
+| NODE | The node that hosts the endpoint |
+| ROLE | The proxy policy of the database: single, all-master-shards, or all-nodes |
+| SSL | Is SSL enabled |
+| WATCHDOG_STATUS | The shards related to the endpoint are monitored and healthy |
+
 ### Example
 
 ``` sh
@@ -264,7 +297,7 @@ rladmin status nodes
 | extra state_machine | Shows execution of state machine information  |
 | extra watchdog | Shows watchdog status  |
 
-### Returns
+### Returns {#returns-nodes}
 
 Returns a table of the status of all nodes on the cluster.
 
@@ -274,6 +307,29 @@ If `issues_only` is specified, it only shows nodes that do not have an `OK` stat
 
 `*node` indicates which node you are connected to.
 
+The following table describes the fields returned by `rladmin status nodes extra all`:
+
+| Field | Description |
+|-------|-------------|
+| NODE:ID | Node ID |
+| ROLE | Is the node a primary (`master`) or secondary (`slave`) node |
+| ADDRESS | The node’s internal IP address |
+| EXTERNAL ADDRESS | The node’s external IP address |
+| HOSTNAME | Node name |
+| MASTERS | The number of primary shards on the node |
+| SLAVES | The number of replica shards on the node |
+| OVERBOOKING_DEPTH | Memory available to create new shards, accounting for the memory reserved for existing shards to grow, even if `shards_overbooking` is enabled. A negative value indicates how much memory is overbooked rather than just showing that no memory is available for new shards. |
+| SHARDS | The number of shards on the node |
+| CORES | The number of cores on the node |
+| FREE_RAM | free_memory/total_memory<br />**free_memory**: the amount of free memory reported by the OS.<br />**total_memory**: the total physical memory available on the node. |
+| PROVISIONAL_RAM | Memory available to create new shards, displayed as available_provisional_memory/total_provisional_memory.<br />**available_provisional_memory**: memory currently available for the creation of new shards.<br />**total_provisional_memory**: memory that would be available to create new shards if the used memory on the node was 0.<br />If the available provisional memory is 0, the node cannot create new shards because the node has reached its shard limit, is in maintenance mode, or is a quorum-only node. |
+| FLASH | The amount of flash memory available on the node, similar to `FREE_RAM` |
+| AVAILABLE_FLASH | Flash memory available to create new shards, similar to `PROVISIONAL_RAM` |
+| VERSION | The cluster version installed on the node |
+| SHA | The node’s SHA hash |
+| RACK-ID | The node’s rack ID |
+| STATUS | The node’s status |
+
 ### Example
 
 ``` sh
@@ -321,14 +377,31 @@ rladmin status shards
 | extra state_machine | Shows execution of state machine information  |
 | extra watchdog | Shows watchdog status  |
 
-### Returns
+### Returns {#returns-shards}
 
 Returns a table of the status of all shards on the cluster.
 
 If `sort <column_titles>` is specified, the result is sorted by the specified table columns.
 
 If `issues_only` is specified, it only shows shards that do not have an `OK` status.
 
+The following table describes the fields returned by `rladmin status shards extra all`:
+
+| Field | Description |
+|-------|-------------|
+| DB:ID | Database ID |
+| NAME | Database name |
+| ID | Shard ID |
+| NODE | The node on which the shard resides |
+| ROLE | The shard’s role: primary (`master`) or replica (`slave`) |
+| SLOTS | Redis keys slot range of the shard |
+| USED_MEMORY | Memory used by the shard |
+| BACKUP_PROGRESS | The shard’s backup progress |
+| RAM_FRAG | The shard’s RAM fragmentation caused by deleted data or expired keys. A large value can indicate inefficient memory allocation. |
+| FLASH_FRAG | For Auto Tiering databases, the shard’s flash fragmentation |
+| WATCHDOG_STATUS | The shard is being monitored by the node watchdog and the shard is healthy |
+| STATUS | The shard’s status |
+
 ### Example
 
 ``` sh