RabbitMQ and Apache Druid Integration

Input and output integration overview

This plugin reads metrics from RabbitMQ servers, providing essential insights into the performance and state of the messaging system.

This plugin allows Telegraf to send JSON-formatted metrics to Apache Druid over HTTP, enabling real-time ingestion for analytical queries on high-volume time-series data.

Integration details

RabbitMQ

The RabbitMQ plugin for Telegraf allows users to gather metrics from RabbitMQ servers via the RabbitMQ Management Plugin. This capability is crucial for monitoring the performance and health of RabbitMQ instances, which are widely utilized for message queuing and processing in various applications. The plugin provides comprehensive insights into key RabbitMQ metrics, including message rates, queue depths, and node health statistics, thereby enabling operators to maintain optimal performance and robustness of their messaging infrastructure. Additionally, it supports secret-stores for managing sensitive credentials securely, making integration with existing systems smoother. Configuration options allow for flexibility in specifying the nodes, queues, and exchanges to monitor, providing valuable adaptability for diverse deployment scenarios.

Apache Druid

This configuration uses Telegraf’s HTTP output plugin with json data format to send metrics directly to Apache Druid, a real-time analytics database designed for fast, ad hoc queries on high-ingest time-series data. Druid supports ingestion via HTTP POST to various components like the Tranquility service or native ingestion endpoints. The JSON format is ideal for structuring Telegraf metrics into event-style records for Druid’s columnar and time-partitioned storage engine. Druid excels at powering interactive dashboards and exploratory queries across massive datasets, making it an excellent choice for real-time observability and monitoring analytics when integrated with Telegraf.

Configuration

RabbitMQ

[[inputs.rabbitmq]]
  ## Management Plugin url. (default: http://localhost:15672)
  # url = "http://localhost:15672"
  ## Tag added to rabbitmq_overview series; deprecated: use tags
  # name = "rmq-server-1"
  ## Credentials
  # username = "guest"
  # password = "guest"

  ## Optional TLS Config
  # tls_ca = "/etc/telegraf/ca.pem"
  # tls_cert = "/etc/telegraf/cert.pem"
  # tls_key = "/etc/telegraf/key.pem"
  ## Use TLS but skip chain & host verification
  # insecure_skip_verify = false

  ## Optional request timeouts
  ## ResponseHeaderTimeout, if non-zero, specifies the amount of time to wait
  ## for a server's response headers after fully writing the request.
  # header_timeout = "3s"
  ##
  ## client_timeout specifies a time limit for requests made by this client.
  ## Includes connection time, any redirects, and reading the response body.
  # client_timeout = "4s"

  ## A list of nodes to gather as the rabbitmq_node measurement. If not
  ## specified, metrics for all nodes are gathered.
  # nodes = ["rabbit@node1", "rabbit@node2"]

  ## A list of queues to gather as the rabbitmq_queue measurement. If not
  ## specified, metrics for all queues are gathered.
  ## Deprecated in 1.6: Use queue_name_include instead.
  # queues = ["telegraf"]

  ## A list of exchanges to gather as the rabbitmq_exchange measurement. If not
  ## specified, metrics for all exchanges are gathered.
  # exchanges = ["telegraf"]

  ## Metrics to include and exclude. Globs accepted.
  ## Note that an empty array for both will include all metrics
  ## Currently the following metrics are supported: "exchange", "federation", "node", "overview", "queue"
  # metric_include = []
  # metric_exclude = []

  ## Queues to include and exclude. Globs accepted.
  ## Note that an empty array for both will include all queues
  # queue_name_include = []
  # queue_name_exclude = []

  ## Federation upstreams to include and exclude specified as an array of glob
  ## pattern strings.  Federation links can also be limited by the queue and
  ## exchange filters.
  # federation_upstream_include = []
  # federation_upstream_exclude = []

Apache Druid

[[outputs.http]]
  ## Druid ingestion endpoint (e.g., Tranquility, HTTP Ingest, or Kafka REST Proxy)
  url = "http://druid-ingest.example.com/v1/post"

  ## Use POST method to send events
  method = "POST"

  ## Data format for Druid ingestion (expects JSON format)
  data_format = "json"

  ## Optional headers (may vary depending on Druid setup)
  # [outputs.http.headers]
  #   Content-Type = "application/json"
  #   Authorization = "Bearer YOUR_API_TOKEN"

  ## Optional timeout and TLS settings
  timeout = "10s"
  # tls_ca = "/path/to/ca.pem"
  # tls_cert = "/path/to/cert.pem"
  # tls_key = "/path/to/key.pem"
  # insecure_skip_verify = false

Input and output integration examples

RabbitMQ

1. Monitoring Queue Performance Metrics: Use the RabbitMQ plugin to keep track of queue performance over time. This involves setting up monitoring dashboards that visualize crucial queue metrics such as message rates, the number of consumers, and message delivery rates. With this information, teams can proactively address any bottlenecks or performance issues by analyzing trends and making data-informed decisions about scaling or optimizing their RabbitMQ configuration.

2. Alerting on System Health: Integrate the RabbitMQ plugin with an alerting system to notify operational teams of potential issues within RabbitMQ instances. For example, if the number of unacknowledged messages reaches a critical threshold or if queues become overwhelmed, alerts can trigger, allowing for immediate investigation and swift remedial action to maintain the health of message flows.

3. Analyzing Message Processing Metrics: Employ the plugin to gather detailed metrics on message processing performance, such as the rates of messages published, acknowledged, and redelivered. By analyzing these metrics, teams can evaluate the efficiency of their message consumer applications and make adjustments to configuration or code where necessary, thereby enhancing overall system throughput and resilience.

4. Cross-System Data Integration: Leverage the metrics collected by the RabbitMQ plugin to integrate data flows between RabbitMQ and other systems or services. For example, use the gathered metrics to drive automated workflows or analytics pipelines that utilize messages processed in RabbitMQ, enabling organizations to optimize workflows and enhance data agility across their ecosystems.

Apache Druid

1. Real-Time Application Monitoring Dashboard: Use Telegraf to collect metrics from application servers and send them to Druid for immediate analysis and visualization in dashboards. Druid’s low-latency querying allows users to interactively explore system behavior in near real-time.

2. Security Event Aggregation: Aggregate and forward security-related metrics such as failed logins, port scans, or process anomalies to Druid. Analysts can build dashboards to monitor threat patterns and investigate incidents with millisecond-level granularity.

3. IoT Device Analytics: Collect telemetry from edge devices via Telegraf and send it to Druid for fast, scalable processing. Druid’s time-partitioned storage and roll-up capabilities are ideal for handling billions of small JSON events from sensors or gateways.

4. Web Traffic Behavior Exploration: Use Telegraf to capture web server metrics (e.g., requests per second, latency, error rates) and forward them to Druid. This enables teams to drill down into user behavior by region, device, or request type with subsecond query performance.

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