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info - Provides detailed statistics for a specific node in the cluster, such as uptime, load, key cache hit rate, the 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.
For example:
nodetool info
Example output:
ID : 2110829b-47f2-4a6b-b87e-a81bc3b5cb31
Gossip active : true
Thrift active : false
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 Transport active |
Native Transport status (CQL) |
Load |
How much hard drive space is used by SSTable (updates every 60 seconds) |
Generation No |
Generation No - When a major change occurs on a node, such as a restart or a changing tokens, the Generation number is increased |
Uptime (seconds) |
Node Uptime since last restart |
Heap Memory (MB) |
Not applicable with ScyllaDB |
Off Heap Memory (MB) |
Shows how much memory is used, by all tables, for Memtables , Bloom filters, Indexes, and Compression Metadata |
Data Center |
Within which Data Center the node is located |
Rack |
The Rack that the node is located on |
Exceptions |
Not applicable with ScyllaDB |
Key Cache |
Not applicable with ScyllaDB |
Row Cache |
Row Cache usage |
Counter Cache |
Not applicable with ScyllaDB |
Token |
List of the node tokens |
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