Created 07-12-2018 08:48 PM
I have created a custom kafka ambari alert. I have verified I am able to connect via jconsole to view the kafka jmx metrics
The error on ambari alert is:
[Alert][kafka_broker_mean_rate5] Unable to extract JSON from JMX response
My alerts.json:
{ "AlertDefinition" : { "cluster_name" : "kafka-wiz", "component_name" : "KAFKA_BROKER", "description" : "This kafka broker alert is triggered if input bytes mean rate exeeds 25.", "enabled" : true, "help_url" : null, "ignore_host" : false, "interval" : 1, "label" : "[CUSTOM6] Kafka Broker Alert", "name" : "kafka_broker_mean_rate6", "repeat_tolerance" : 1, "repeat_tolerance_enabled" : false, "scope" : "ANY", "service_name" : "KAFKA", "source" : { "jmx" : { "property_list" : ["kafka.server:type=BrokerTopicMetrics,name=BytesInPerSec/MeanRate"], "value" : "{0}" }, "reporting" : { "ok" : { "text" : "Kafka input mean rate: {0}" }, "warning" : { "text" : "Kafka input mean rate: {0}", "value" : 25 }, "critical" : { "text" : "Kafka input mean rate: {0}", "value" : 50 }, "units" : "bytes" }, "type" : "METRIC", "uri" : { "http" : "xxxx.field.xxx.com", "default_port" : 16667 } } } }
Any feedback appreciated.
Created 07-23-2018 04:37 PM
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Register/LoginCreated 07-13-2018 02:31 AM
@sunile.manjee was looking at the code in Ambari below specific to metric alerts and it seems as if that default_port value is not being used as in other alert types
Function used to extract uri appears to only use the default port if uri isn't defined: https://github.com/apache/ambari/blob/branch-2.6/ambari-agent/src/main/python/ambari_agent/alerts/ba...
Also in other examples I've seen the uri is parameterized with a value from Ambari configuration. And when looking at the ambari config the port value is actually included with the uri and not separated out . See example in
Create Custom Alert JSON file" section here: https://community.hortonworks.com/articles/143762/how-to-create-a-custom-ambari-alert-and-use-it-for... .
It may be worthwhile to try including the the port value with the uri
Created 07-18-2018 03:46 PM
@Yolanda M. Davis Thanks for your response. I have tried 7 different combos the the ambari alert and all seem to fail. Here is the ambari alert without default port and the port included in the uri
{ "AlertDefinition" : { "cluster_name" : "kafka-wiz", "component_name" : "KAFKA_BROKER", "description" : "This kafka broker alert is triggered if input bytes mean rate exeeds 25.", "enabled" : true, "help_url" : null, "ignore_host" : false, "interval" : 1, "label" : "[CUSTOM7] Kafka Broker Alert", "name" : "kafka_broker_mean_rate7", "repeat_tolerance" : 1, "repeat_tolerance_enabled" : false, "scope" : "ANY", "service_name" : "KAFKA", "source" : { "jmx" : { "property_list" : ["kafka.server:type=BrokerTopicMetrics,name=BytesInPerSec/MeanRate"], "value" : "{0}" }, "reporting" : { "ok" : { "text" : "Kafka input mean rate: {0}" }, "warning" : { "text" : "Kafka input mean rate: {0}", "value" : 25 }, "critical" : { "text" : "Kafka input mean rate: {0}", "value" : 50 }, "units" : "bytes" }, "type" : "METRIC", "uri" : { "http" : "kafka-xxx-messaging-1.xxx.xxxxx.com:16667"} } } }
I verified I am able to connect via jconsole on that port.
Created 07-23-2018 04:37 PM
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