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. |
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. |
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