Prometheus is an open-source monitoring toolkit for collecting and alerting on infrastructure and platform metrics. These metrics are exposed by Prometheus in OpenMetrics format. Prometheus exporters provide a standardized monitoring interface for numerous technologies and services. By adding Dynatrace support to metrics collected from Prometheus exporters, you get intelligent observability and automatic root cause analysis for technologies such as Apache Cassandra, Redis, and Kafka. As well 100+ integrations maintained by the Prometheus community.

This is intended for users who want to:

• Leverage Apache Cassandra Prometheus metrics to extend Dynatrace’s monitoring capabilities.

This enables you to:

• Monitor you Azure Managed Instance for Apache Cassandra Cluster
• Visualize Infrastructure (Cluster, Data Center, Rack, Node) and Data (Keyspace & Table) Metrics.
• Proactively alert on anomalies of Prometheus metrics with Davis AI.

Compatibility Requirements:

• ActiveGate version 1.231+

This extension is built on top of the new Extension 2.0 Framework.

The extension package contains:

• Prometheus DataSource configuration,
• dashboard template,
• Unified Analysis screen template,
• topology definition and entity extraction rules.

More information can be found in the Documentation:

• Prometheus Extensions

Collected metrics:

• Storage Load
• Storage Exceptions
• Commit Log Pending Tasks
• Commit Log Completed Tasks Total
• Buffer Pool Size
• Buffer Pool Misses Total
• Client Connected Native Clients
• Client Auth Failure Total
• Client Auth Success Total
• Storage Total Hints Total
• CQL Prepared Statements Executed Total
• CQL Regular Statements Executed Total
• Dropped Messages Total
• JVM GC Count
• JVM GC Time
• JVM Memory Used
• JVM Memory Usage
• Thread Pools Active Tasks
• Thread Pools Total Blocked Tasks Total
• Thread Pools Completed Tasks
• Client Request Latency Total
• Client Request Failures Total
• Client Request Unavailables Total
• Cache Hit Rate
• Cache Capacity
• Cache Misses Total
• Cache Size
• Keyspace All Memtables Live Data Size
• Keyspace Bloom Filter Disk Space Used
• Keyspace Live Disk Space Used
• Keyspace Memtable Columns Count
• Keyspace Memtable Live Data Size
• Keyspace Memtable Switch Count
• Keyspace Pending Compaction
• Keyspace Pending Flushes
• Keyspace Read Total Latency Total
• Keyspace Total Disk Space Used
• Keyspace Write Total Latency Total
• Table Bloom Filter Disk Space Used
• Table Bloom Filter False Positives
• Table Bloom Filter False Ratio
• Table Bloom Filter False Ratio
• Table Bytes Flushed Total
• Table Compaction Bytes Written Total
• Table Compression Ratio
• Table Compression Ratio
• Table Dropped Mutations Total
• Table Estimated Partition Count
• Table Key Cache Hit Rate
• Table Key Cache Hit Rate
• Table Live Disk Space Used Total
• Table Live SSTable Count
• Table Memtable Columns Count
• Table Memtable Live Data Size
• Table Memtable Switch Count Total
• Table Pending Compactions
• Table Pending Flushes Total
• Table Read Total Latency Total
• Table Row Cache Hit Total
• Table Row Cache Miss Total
• Table Total Disk Space Used Total
• Table Write Total Latency Total

Dynatrace integrates Gauge and Counter metrics from your Azure Managed Instance for Apache Cassandra Clusters.

Step-by-step instructions

1. Enable the Azure Managed Instance for Apache Cassandra extension on the Hub.
2. Create a Monitoring Configuration
   1. Use the API URL of your Prometheus Server (http://localhost:9090/api/v1)
   2. Select the ActiveGate Group
   3. Add a Description
   4. Select the Feature Sets for this Configuration
3. Save your configuration and start exploring the data in the pre-configured Dashboard(s) and Unified Analysis Screens