KB485140: Missing JAVA_HOME path prevents Kafka and ZooKeeper from starting in MicroStrategy 2021 Update 2

Description 

After upgrading from Strategy 2021 to Strategy 2021 Update 2, Kafka and ZooKeeper cannot be started. 

Steps to reproduce

1. Install Strategy 2021. 
2. Upgrade to Strategy 2021 Update 2.
   After the installation, Kafka and ZooKeeper are stopped.
   
3. Attempt to start the services. The following message is returned:
   

   
   [mstr@env-258226laiouse1 initd_scripts]$ ./kafka-zookeeper start
   Kafka service is stopped
   Zookeeper service is stopped

   
   The following entries can be found in the Kafka logs. 
   

   
   [mstr@env-258226laiouse1 logs]$ cat kafkaServer.out
   nohup: failed to run command 'java': No such file or directory
   [mstr@env-258226laiouse1 logs]$

   
   

Why is this happening? 

In Strategy 2021 Update 1, the

JAVA_HOME

kafka-run-class.sh

Workaround

• Navigate to the following path:

  <install_path>/MessagingServices/Kafka/kafka_2.13-2.7.0/bin

• Open the

  kafka-run-class.sh

  file.
  

  
  [mstr@tec-l-1008315 bin]$ vi kafka-run-class.sh 

  
  
• Add the following entry in the file with the install path in it.
  

  
  JAVA_HOME="<install_path>/_jre"

  
  
• Save the file.
  The file should look like the following screenshot:
  

• Navigate to the following path:

  <install_path>/initd_scripts/

• Start Kafka.
  

  
  [mstr@tec-l-1008315 ~]$ cd /var/opt/Strategy/install/initd_scripts/
  [mstr@tec-l-1008315 initd_scripts]$ ./kafka-zookeeper start
  Kafka service running with PID = 15701
  Zookeeper service running with PID = 94746
  [mstr@tec-l-1008315 initd_scripts]$ 

  
  Kafka should be up and running without any issues.