Apache Tomcat

Supported Versions

Currently supported versions are Apache Tomcat 5.0 or newer.

Sensor (Data Collection)

Tracked Configuration

  • Version
  • Home
  • Web Apps
  • Application Configuration
  • Connectors
  • Servlets
  • Executors
  • Data Sources

Metrics

  • Sessions

    • Session count
    • Requests
    • Average Response Times
    • Errors
  • Connectors

    • Thread count
    • Busy threads
    • Max threads
    • Connection count
    • Max connections
  • Executors

    • Thread count
    • Queue size
    • Max threads
  • Data Sources

    • Active connections
    • Max connections

Health Signatures

Health Description
Connection limit reached Active connections reached maximum number of connections.
Thread limit reached Threads reached maximum number of threads.
Sudden drop in the number of session Significant drop in the number of session (50%).
Sudden increase in the number of session Significant increase in the number of session (50%).

Configuration

Naming Tomcat

Instana extracts the name for the Tomcat instances leveraging the ServerInfo.properties file. By editing it you can influence the naming within Instana by simply editing:

CATALINA_BASE/lib/org/apache/catalina/util/ServerInfo.properties

and change this value:

server.info=Apache Tomcat/7.0.x