Nodetool info

info - Provides detailed statistics for a specific node in the cluster, such as uptime, load, key cache hit rate, total count of all exceptions and more. If needed, you can specify which node to view by using the –host argument with the host IP address

Example

nodetool info

Example output

ID                     : 2110829b-47f2-4a6b-b87e-a81bc3b5cb31
Gossip active          : true
Thrift active          : true
Native Transport active: true
Load                   : 294.44 MB
Generation No          : 1474434958
Uptime (seconds)       : 1868
Heap Memory (MB)       : 39.21 / 247.50
Off Heap Memory (MB)   : 7.74
Data Center            : us-east
Rack                   : 1b
Exceptions             : 0
Key Cache              : entries 0, size 0 bytes, capacity 0 MB, 0 hits, 0 requests, 0 recent hit rate, 0 save period in seconds
Row Cache              : entries 1064771, size 1.02 MB, capacity 450.8 MB, 96 hits, 120 requests, 0.800 recent hit rate, 0 save period in seconds
Counter Cache          : entries 0, size 0 bytes, capacity 0 bytes, 0 hits, 0 requests, 0.000 recent hit rate, 0 save period in seconds
Token                  : (invoke with -T/--tokens to see all 256 tokens)
Parameter Description
ID Node ID
Gossip active Gossip status
Thrift active Thrift status
Native Transp ort active Native Transport status (CQL)
Load How much hard drive space is used by SSTable
Genera tion No Generatio n No - When a major change occurs on a node, such as a restart or a changing tokens, the Generatio n number is increased
Uptime (secon ds) Node Uptime since last restart
Heap Memory (MB) Not applicabl e with Scylla
Off Heap Memory (MB) Shows how much memory is used, by all tables, for Memtables , Bloom filters, Indexes, and Compressi on Metadata
Data Center Which Data Center the node locate
Rack The Rack that the node is located on
Except ions Not applicabl e with Scylla
Key Cache Not applicabl e with Scylla
Row Cache Row Cache usage
Counte r Cache Not applicabl e with Scylla
Token List of the node tokens

Nodetool Reference