nodetool netstats
Prints network information about the host.
Prints network information about the host.
The output includes the following information:
- JVM settings
- Mode - The operational mode of the node: JOINING, LEAVING, NORMAL, DECOMMISSIONED, CLIENT
- Read repair statistics
- Attempted - The number of successfully completed read repair operations.
- Mismatch (blocking) - The number of read repair operations since server restart that blocked a query.
- Mismatch (background) - The number of read repair operations since server restart performed in the background.
- Pool name - Information about client read and write requests by thread pool size.
- Active, pending, and completed number of commands and responses
Synopsis
nodetool [connection_options] netstats [-H]
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
- -H, --human-readable
- Display bytes in human readable form: KiB (kibibyte), MiB (mebibyte), GiB (gibibyte), TiB (tebibyte).
- -h, --host hostname
- The hostname or IP address of a remote node or nodes. When omitted, the default is the local machine.
Examples
Get network information of local node
nodetool netstats
The output is:
Mode: NORMAL
Not sending any streams.
Read Repair Statistics:
Attempted: 0
Mismatch (Blocking): 1
Mismatch (Background): 1
Pool Name Active Pending Completed Dropped
Large messages n/a 0 0 0
Small messages n/a 0 23295 0
Gossip messages n/a 0 1853117 0