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Cassandra / nodetool /

Nodetool Commands

  • nodetool status

Dropping mutations?

  • notetool tpstats

Key Cache performance

  • nodetool info

Schema Synch

  • nodetool describecluster
  • nodetool resetschema

Read Latency

  • nodetool cfstats
  • nodetool proxyhistograms

Streaming Data

  • nodetool netstats

How slow it is

  • nodetool <options> setstreamthroughput -- <value_in_mb>

How much memory am I using

  • nodetool info

Data skewed

  • nodetool cfhistograms engine links

Do I have data consistency issues?

  • node tool nestats

  • nodetool netstats

Do I hve blocked slushwritters?

  • nodetool tpstats

How much data is on each nodes

  • nodetool info
  • nodetool status`

Where does partition key "steve" get stored?

  • nodetool getendpoints

What is my logging level?

  • nodetool getloglevel

My node needs its data

  • nodetool rebuild

How many sstables do I use per read

  • nodetool cfhostograms

Are Compactions taking over my systems?

  • nodetool compactionstats

What is DSE Tool

  • dsetool status

Process Cassandra


    $ ps -ef | grep cassandra
    $ sudo kill 
    $ service cassandra start

Process DataStax Agent


    $ ps -ef | grep datastax-agent
    $ sudo kill 
    $ service datastax-agent start

Process OpsCenter (running only on OpsCenter node)


    $ ps -ef | grep opscenter
    $ sudo kill pid
    $ service datastax-agent start

DSE Share

ls -l /usr/share/dse