KB485120: Messaging Services Kafka and Zookeeper services fail to start in MicroStrategy 2021 Update 2 on Linux

Description

When a generic Java instance is not available, both the Kafka and Zookeeper services fail to launch, returning an error ‘

exec: java: not found

’.

Without being able to launch Messaging Services, this also can lead to the Platform Analytics Consumer being unable to pass its health check.

Why is this happening?

The

kafka-run-class.sh

script that is used in launching the two services is missing the declaration of the

JAVA_HOME

variable. Without the

JAVA_HOME

variable pointing to the Java instance that is provided with the Strategy installation, the services will attempt to use Java from the User path variable.

Solution

To resolve the issue, the J

AVA_HOME

variable can be declared at the top of the

kafka-run-class.sh

file after the

!/bin/bash

declaration. The

kafka-run-class.sh

is located at

<install>

/MessagingServices/Kafka/kafka_2.13-2.7.0/bin/kafka-run-class.sh

.
The variable must be set to the

<instal.>/_jre

path.
For example, if you are using the install path

/opt/MicroStrategy/

, the variable would be set as

JAVA_HOME="/opt/MicroStrategy/_jre

".