jmxtrans in kubernetes - adding ip/hostname of pod in output message

[Ritam Banik]

Hi,

I'm running jmxTrans as a sidecar alongisde my app in the same pod. I've multiple pods. My jmxTrans query json looks like,

{

      "servers" : [ {

        "port" : "5555",

        "host" : "127.0.0.1",

        "queries" : [

          {

            "obj" : "java.lang:type=Memory",

              "resultAlias":"jvmMemory",

            "outputWriters" : [

              {

                "@class" : "com.googlecode.jmxtrans.model.output.kafka.KafkaWriter",

                "rootPrefix": "jvmMemory",

                "booleanAsNumber" : false,

                "debug" : false,

                "tags" : {

                   "application": "kafka-connect",

                   "region": "lab",

                   "cluster": "connect-generic"

                },

                "settings" : {

                   "topics" : "metrics_kafka_connect",

                   "bootstrap.servers" : "brokerIP:9092"

                }

              }

            ]

           },

        "numQueryThreads" : 8

      } ]

    }

A message exported by the Kafka writer into a topic looks like,

{

  "keyspace": "SourceTaskMetrics.127_0_0_1_5555.SourceTaskMetrics.export-db-ut-calldata-1_0.source-record-poll-rate",

  "value": "0.0",

  "timestamp": 1573075690,

  "tags": {

    "application": "kafka-connect",

    "region": "lab",

    "cluster": "generic"

  }

} 

I need to add the pod IP/hostname in the message. Since, running in container needs to have the host as 127.0.0.1 in the query file, so how do I add this info in the query file? Is there a way in the query file to read the pod environment info?

Thanks,

Ritam