Jolokia2

This integration collects JMX metrics using the Jolokia read service. A bridge plugin included with the SolarWinds Snap Agent provides the Jolokia2 integration. The bridge plugin uses the Telegraf Jolokia2 plugin.

Prerequisites

This integration requires that the Jolokia read service be available. Refer to official Jolokia agent documentation for information on downloading and using the service for your application.

To verify if metrics can be gathered, run the following command:

curl "http://localhost:8778/jolokia/read/java.lang:type=Memory/HeapMemoryUsage"

The following response is returned:

# response
{
   "request":{
      "mbean":"java.lang:type=Memory",
      "attribute":"HeapMemoryUsage",
      "type":"read"
   },
   "value":{
      "init":520093696,
      "committed":509607936,
      "max":509607936,
      "used":137689336
   },
   "timestamp":1510095659,
   "status":200
}

Configuration

The Snap agent provides an example task file with basic JVM metrics to help you get started quickly, however you need to provide the correct settings for your Jolokia2 installation. To enable the task:

1. Make a copy of the cassandra example task file task-bridge-jolokia2.yaml.example and rename the copied file to task-bridge-jolokia2.yaml:

   On Windows, using Explorer or PowerShell:

   copy "C:\ProgramData\SolarWinds\Snap\tasks-autoload.d\task-bridge-jolokia2.yaml.example" "C:\ProgramData\SolarWinds\Snap\tasks-autoload.d\task-bridge-jolokia2.yaml"

   On Linux using command line:

   sudo cp -p /opt/SolarWinds/Snap/etc/tasks-autoload.d/task-bridge-jolokia2.yaml.example /opt/SolarWinds/Snap/etc/tasks-autoload.d/task-bridge-jolokia2.yaml

2. Edit the task file with settings specific to your Jolokia install:

   ---
   version: 2
   
   schedule:
     type: simple
     interval: "60s"
   
   plugins:
     - plugin_name: bridge
   
       config:
         jolokia2:
   
           ## List of urls exposing jolokia read service
           urls:
             - http://localhost:8080/jolokia
           
           ## Metric name prefix
           #bridge_prefix: jolokia2
   
           ## Username and password needed to access jolokia service
           #username: admin
           #password: admin
   
           ## Timeout for fetching response from jolokia
           # response_timeout: "5s"
   
           ## Optional TLS Config
           # tls_ca: /path/to/cafile
           # tls_cert: /path/to/certfile
           # tls_key: /path/to/keyfile
           
           ## Use TLS but skip chain & host verification
           # insecure_skip_verify: true
   
           ## List of metrics to be collected from jolokia read service
           metrics:
             - name: OperatingSystem
               mbean: java.lang:type=OperatingSystem
               paths:
                 - ProcessCpuLoad
                 - SystemLoadAverage
                 - SystemCpuLoad
                 
             - name: jvm_memory
               mbean: java.lang:type=Memory
               paths: 
                 - HeapMemoryUsage
                 - NonHeapMemoryUsage
                 - ObjectPendingFinalizationCount
   
             - name: jvm_garbage_collector
               mbean: java.lang:name=*,type=GarbageCollector
               paths: 
                 - CollectionTime
                 - CollectionCount
               tag_keys: 
                 - name
   
             - name: jvm_memory_pool
               mbean: java.lang:name=*,type=MemoryPool
               paths: 
                 - Usage
                 - PeakUsage
                 - CollectionUsage
               tag_keys: 
                 - name
               tag_prefix: pool_
   
       publish:
         - plugin_name: publisher-appoptics

3. Restart the agent

   On Windows command line:

   net stop swisnapd
   net start swisnapd

   On Linux command line:

   sudo service swisnapd restart

4. Enable the Jolokia2 integration in AppOptics:

   On the Integrations Page you will see Jolokia2 integration available. It may take a couple minutes before the Jolokia2 integration is identified. Select the Jolokia2 integration to open the configuration menu in AppOptics, and enable it. If you do not see Jolokia2 as an option, see Troubleshooting Linux.

Metrics and Tags

The Jolokia2 integration comes with few example JVM metrics to help you get started. This integration allows to collect any metric your application exposes using JMX agent.