dsetool node_health
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.
Synopsis
dsetool node_health [--all]
Syntax conventions
Syntax conventions | Description |
---|---|
UPPERCASE |
Literal keyword. |
Lowercase |
Not literal. |
|
Variable value. Replace with a valid option or user-defined value. |
|
Optional.
Square brackets ( |
|
Group.
Parentheses ( |
|
Or.
A vertical bar ( |
|
Repeatable.
An ellipsis ( |
|
Single quotation ( |
|
Map collection.
Braces ( |
|
Set, list, map, or tuple.
Angle brackets ( |
|
End CQL statement.
A semicolon ( |
|
Separate the command line options from the command arguments with two hyphens ( |
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Search CQL only: Single quotation marks ( |
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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_health
The result displays a number between 0 and 1:
Node Health [0,1]: 0.7
To 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