Cassandra plugin

This plugin

collects metrics from Cassandra.

Prerequisites

Meter 4.2 or later must be installed.

The Cassandra plugin 2.1 or later supports the following Operating Systems.

Linux	✅️
Windows	✅️
OS X	✅️

To install the plugin

From the top right of the screen, perform one of the following actions:
- Click > Data Collection, select the TrueSight meter, and select the Sources tab.
- Click > Configure Sources.
Use the search box or scroll through the page to find the source system which has the TrueSight meter on which you want to install the plugin.
Click the name of the source to view source details.
Select the Plugins tab.
Use the search box or scroll through the page to find the plugin you want to install.
Click + Install to start the installation.
Refer to the following sections for the configuration details required to collect data and view the list of plugin metrics.

Configuration details

Field Name	Description
Host	Host of the Cassandra JMX endpoint
Port	Port of the Cassandra JMX endpoint. Defaults to 7199
User	Username to access the Cassandra JMX endpoint
Password	Password to access the Cassandra JMX endpoint
Poll Interval	How often should the plugin poll for metrics.
Source	The Source to display in the legend for the metrics data. It will default to the hostname of the server.
Poll Interval	How often should the plugin poll for metrics.

Advanced configuration

To customize this plugin, see Cassandra plugin on GitHub.

Plugin metrics

Metric Name	Description
CASSANDRA_COMPACTION_PENDING_TASKS	Estimated number of pending compaction tasks.
CASSANDRA_COMPACTION_COMPLETED_TASKS	Estimated number of completed compaction tasks.
CASSANDRA_COMPACTION_TOTAL_COMPLETED_RATE	Estimated number of completed compaction tasks per second.
CASSANDRA_COMPACTION_BYTES_COMPACTED	Number of bytes compacted since node started.
CASSANDRA_CACHE_KEYCACHE_HITRATE	Cache hit rate for KeyCache.
CASSANDRA_CACHE_KEYCACHE_REQUESTS_RATE	Cache request count for KeyCache per second.
CASSANDRA_CACHE_KEYCACHE_ENTRIES	Number of entries on KeyCache.
CASSANDRA_CACHE_KEYCACHE_SIZE	Cache size in bytes for KeyCache.
CASSANDRA_CACHE_KEYCACHE_CAPACITY	Cache capacity in bytes for KeyCache.
CASSANDRA_CACHE_ROWCACHE_HITRATE	Cache hit rate for RowCache.
CASSANDRA_CACHE_ROWCACHE_REQUESTS_RATE	Cache request count for RowCache per second.
CASSANDRA_CACHE_ROWCACHE_ENTRIES	Number of entries on RowCache.
CASSANDRA_CACHE_ROWCACHE_SIZE	Cache size in bytes for RowCache.
CASSANDRA_CACHE_ROWCACHE_CAPACITY	Cache capacity in bytes for RowCache.
CASSANDRA_CACHE_COUNTERCACHE_HITRATE	Cache hit rate for CounterCache.
CASSANDRA_CACHE_COUNTERCACHE_REQUESTS_RATE	Cache request count for CounterCache per second.
CASSANDRA_CACHE_COUNTERCACHE_ENTRIES	Number of entries on CounterCache.
CASSANDRA_CACHE_COUNTERCACHE_SIZE	Cache size in bytes for CounterCache.
CASSANDRA_CACHE_COUNTERCHE_CAPACITY	Cache capacity in bytes for CounterCache.
CASSANDRA_HEAP_MEMORY_USED	Total Heap Memory used by the Cassandra instance.
CASSANDRA_WRITE_LATENCY_MEAN	Latency on write operations.
CASSANDRA_WRITE_FAILURES_RATE	Number of failures per second on write operations.
CASSANDRA_WRITE_TIMEOUTS_RATE	Number of timeouts per second on write operations.
CASSANDRA_READ_LATENCY_MEAN	Latency on read operations.
CASSANDRA_READ_FAILURES_RATE	Number of failures per second on read operations.
CASSANDRA_READ_TIMEOUTS_RATE	Number of timeouts per second on read operations.
CASSANDRA_CLIENT_CONNECTED_NATIVE_CLIENTS	Number of native clients connected.
CASSANDRA_CLIENT_CONNECTED_THRIFT_CLIENTS	Number of thrift clients connected.
CASSANDRA_STORAGE_LOAD_BYTES	Total disk space in bytes used for this node.
CASSANDRA_STORAGE_COMMITLOG_SIZE	Current data size of all commit log segments.
CASSANDRA_WRITE_LATENCY_95P	Write latency 95th percentile.
CASSANDRA_WRITE_1MIN_RATE	Write 1m rate.
CASSANDRA_READ_LATENCY_95P	Read latency 95th percentile.
CASSANDRA_READ_1MIN_RATE	Read 1m rate.
CASSANDRA_RANGE_SLICE_LATENCY_MEAN	Range slice latency mean.
CASSANDRA_RANGE_SLICE_LATENCY_95P	Range slice latency 95th percentile.
CASSANDRA_RANGE_SLICE_1MIN_RATE	Range slice 1m rate.
CASSANDRA_RANGE_SLICE_FAILURES_RATE	Range slice failure rate.
CASSANDRA_RANGE_SLICE_TIMEOUTS_RATE	Range slice timeout rate.
CASSANDRA_CAS_READ_LATENCY_MEAN	CAS read latency mean.
CASSANDRA_CAS_READ_LATENCY_95P	CAS read latency 95th percentile.
CASSANDRA_CAS_READ_1MIN_RATE	CAS read 1m rate.
CASSANDRA_CAS_READ_FAILURES_RATE	CAS read failures rate.
CASSANDRA_CAS_READ_TIMEOUTS_RATE	CAS read timeouts rate.
CASSANDRA_CAS_WRITE_LATENCY_MEAN	CAS write latency mean.
CASSANDRA_CAS_WRITE_LATENCY_95P	CAS write latency 95th percentile.
CASSANDRA_CAS_WRITE_1MIN_RATE	CAS write 1m rate.
CASSANDRA_CAS_WRITE_FAILURES_RATE	CAS write failures rate.
CASSANDRA_CAS_WRITE_TIMEOUTS_RATE	CAS write timeouts rate.
CASSANDRA_DROPPED_MUTATION_RATE	Dropped mutation rate.
CASSANDRA_DROPPED_READ_RATE	Dropped read rate.
CASSANDRA_DROPPED_COUNTER_MUTATION_RATE	Dropped counter mutation rate.
CASSANDRA_DROPPED_HINT_RATE	Dropped hint rate.
CASSANDRA_PENDING_MUTATIONS	Pending mutations.
CASSANDRA_PENDING_COUNTER_MUTATIONS	Pending counter mutations.
CASSANDRA_PENDING_READS	Pending reads.