nodetool info

Prints node information, such as load and uptime.

Provides node information, including the token and on disk storage (load) information, times started (generation), uptime in seconds, and heap memory usage.

Synopsis

nodetool [connection_options] info
[-T]
Table 1. Legend
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.

Definition

The short form and long form parameters are comma-separated.

Connection options

-h, --host hostname
The hostname or IP address of a remote node or nodes. When omitted, the default is the local machine.
-p, --port jmx_port
The JMX port number.
-pw, --password jmxpassword
The JMX password for authenticating with secure JMX. If a password is not provided, you are prompted to enter one.
-pwf, --password-file jmx_password_filepath
The filepath to the file that stores JMX authentication credentials.
-u, --username jmx_username
The user name for authenticating with secure JMX.

Command arguments

-T, --tokens
Show all tokens.

Examples

Print node information with token

nodetool info -T

Result:

ID                     : 3b8e8192-c1d3-4b01-a792-9673b4e377c1
Gossip active          : true
Native Transport active: true
Load                   : 255.29 KiB
Generation No          : 1532896921
Uptime (seconds)       : 1882997
Heap Memory (MB)       : 604.32 / 4012.00
Off Heap Memory (MB)   : 0.00
Data Center            : Search
Rack                   : rack1
Exceptions             : 0
Key Cache              : entries 0, size 0 bytes, capacity 100 MiB, 0 hits, 0 requests, NaN recent hit rate, 14400 save period in seconds
Row Cache              : entries 0, size 0 bytes, capacity 0 bytes, 0 hits, 0 requests, NaN recent hit rate, 0 save period in seconds
Counter Cache          : entries 0, size 0 bytes, capacity 50 MiB, 1 hits, 2 requests, 0.500 recent hit rate, 7200 save period in seconds
Chunk Cache            : entries 7871, size 260.79 MiB, capacity 2.79 GiB, 7871 misses, 14839137 requests, 0.999 recent hit rate, 937.529 microseconds miss latency
Percent Repaired       : 100.0%
Token                  : 8242717283351148695