dsetool node_health
Retrieves a dynamic score between 0 and 1 that describes the health of a DataStax Enterprise node.
Retrieves a dynamic score between 0 and 1 that describes the health of a DataStax Enterprise node. Node health is a score-based representation of how fit a node is to handle search queries. The node health composite score is based on dropped mutations and uptime. A higher score indicates better node health. Nodes that have a large number of dropped mutations and nodes that are just started have a lower health score.
See .
Synopsis
dsetool node_health [--all]
| Syntax conventions | Description |
|---|---|
| UPPERCASE | Literal keyword. |
| Lowercase | Not literal. |
Italics |
Variable value. Replace with a valid option or user-defined value. |
[ ] |
Optional. Square brackets ( [ ] ) surround optional command
arguments. Do not type the square brackets. |
( ) |
Group. Parentheses ( ( ) ) identify a group to choose from. Do
not type the parentheses. |
| |
Or. A vertical bar ( | ) separates alternative elements. Type
any one of the elements. Do not type the vertical bar. |
... |
Repeatable. An ellipsis ( ... ) indicates that you can repeat
the syntax element as often as required. |
'Literal string' |
Single quotation ( ' ) marks must surround literal strings in
CQL statements. Use single quotation marks to preserve upper case. |
{ key:value } |
Map collection. Braces ( { } ) enclose map collections or key
value pairs. A colon separates the key and the value. |
<datatype1,datatype2> |
Set, list, map, or tuple. Angle brackets ( < > ) enclose
data types in a set, list, map, or tuple. Separate the data types with a comma.
|
cql_statement; |
End CQL statement. A semicolon ( ; ) terminates all CQL
statements. |
[ -- ] |
Separate the command line options from the command arguments with two hyphens (
-- ). This syntax is useful when arguments might be mistaken for
command line options. |
' <schema> ... </schema>
' |
Search CQL only: Single quotation marks ( ' ) surround an entire
XML schema declaration. |
@xml_entity='xml_entity_type' |
Search CQL only: Identify the entity and literal value to overwrite the XML element in the schema and solrconfig files. |
- --all
- Run the operation on all nodes.
Examples
To retrieve the health score of the local node:
dsetool node_healthThe result displays a number between 0 and 1:
Node Health [0,1]: 0.7To retrieve the health score of a specified node:
dsetool -h 200.192.10.11 node_health
To retrieve the health score of all nodes:
dsetool node_health --all