AXA Profiles not received from Read Server

Products

• CA App Experience Analytics

Issue/Introduction

When calling the data endpoint (e.g. https://URL_TO_SERVER/api/1/urn:ca:tenantId:APM-USERSTORE/urn:ca:appId:APP/profile) we get the following Message displayed in the browser:  

 Profiles not received from Read Server   

In the logs (…/aoPlatform/AxC/logs/DigitalExperienceCollector.log) we see only the following two error lines:   

[XNIO-2 task-6] ERROR c.c.a.c.processor.cache.ProfileCache - Profiles not received from Read Server 

[XNIO-2 task-6] ERROR c.c.a.c.p.h.e.RestResponseEntityExceptionHandler - error caught: Profiles not received from Read Server  

Looking at kafka topic maaReadServer, we could see that requests to ListApps and ListProfiles were sitting there, but the read server was not looking at them.

Environment

Release : 17.3

Component : APP EXPERIENCE ANALYTICS ENGINE

Cause

The Kafka configuration was using incorrect hostnames derived from multiple NICs on the machine.

This was checked using telnet on the machine to port 9092, it would respond on one hostname but not another.

Resolution

This is a list of files and locations where the kafka configuration would need to be checked. They are all relative paths to CA_EMM_HOME. The properties in files marked mdo and dxc (the last three in this list) are key to resolving the error but the other files should be checked as it will affect how the data is processed from AXA mobile sessions:

config/axa-crash-handler_instance.properties:axa.kafka.broker.list=KAFKA_HOST:9092

config/axa-crash-handler_instance.properties:kafka.servers.bootstrap=KAFKA_HOST:9092

config/axa-crash-symbolicator_instance.properties:axa.kafka.broker.list=KAFKA_HOST:9092

config/axa-crash-symbolicator_instance.properties:kafka.servers.bootstrap=KAFKA_HOST:9092

config/axa-transformer_instance.properties:axa.kafka.broker.list=KAFKA_HOST:9092

config/mdo-aggregator_instance.properties:dxa.kafka.broker.list=KAFKA_HOST:9092

config/mdo-server_instance.properties:dxa.kafka.broker.list=KAFKA_HOST:9092 

AxC/conf/dxc.properties:bootstrap.servers.hostandport=KAFKA_HOST:9092

All AXA services must be stopped and restarted after making this change.