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telegraf/plugins/inputs/cassandra/README.md

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Telegraf plugin: Cassandra

Plugin arguments:

  • context string: Context root used for jolokia url
  • servers []Server: List of servers
    • host string: Server's ip address or hostname
    • port string: Server's listening port
    • username string: Server's username for authentication (optional)
    • password string: Server's password for authentication (optional)
  • metrics []Metric
    • jmx string: Jmx path that identifies mbeans attributes
    • pass []string: Attributes to retain when collecting values (TODO)
    • drop []string: Attributes to drop when collecting values (TODO)

Description

The Cassandra plugin collects Cassandra/JVM metrics exposed as MBean's attributes through jolokia REST endpoint. All metrics are collected for each server configured.

See: https://jolokia.org/

Measurements:

Cassandra plugin produces one or more measurements for each metric configured, adding Server's name as host tag. More than one measurement is generated when querying table metrics with a wildcard for the keyspace or table name.

Given a configuration like:

[cassandra]

[[cassandra.servers]]
  host = "127.0.0.1"
  port = "878"

[[cassandra.metrics]]
  jmx  = "/java.lang:type=Memory/HeapMemoryUsage"

The collected metrics will be:

javaMemory,host=myHost,mname=HeapMemoryUsage HeapMemoryUsage_committed=1040187392,HeapMemoryUsage_init=1050673152,HeapMemoryUsage_max=1040187392,HeapMemoryUsage_used=368155000 1459551767230567084