dsetool node_health
Retrieves a dynamic score between 0 and 1 that describes the health of a DataStax Enterprise (DSE) 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 legend
| Syntax conventions | Description |
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Italic, bold, or |
Syntax diagrams and code samples use one or more of these styles to mark placeholders for variable values. Replace placeholders with a valid option or your own user-defined value. In CQL statements, angle brackets are required to enclose data types in a set, list, map, or tuple.
Separate the data types with a comma.
For example: In Search CQL statements, angle brackets are used to identify the entity and literal value to overwrite the XML element in the schema and |
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Square brackets surround optional command arguments. Do not type the square brackets. |
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Parentheses identify a group to choose from. Do not type the parentheses. |
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A pipe separates alternative elements. Type any one of the elements. Do not type the pipe. |
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Indicates that you can repeat the syntax element as often as required. |
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Single quotation marks must surround literal strings in CQL statements.
Use single quotation marks to preserve upper case.
+
For Search CQL only: Single quotation marks surround an entire XML schema declaration, such as |
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Map collection.
Curly braces enclose maps ( |
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Ends a CQL statement. |
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Separate command line options from command arguments with two hyphens. This syntax is useful when arguments might be mistaken for command line options. |
- --all
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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