Install Kafka
Prerequisites and Considerations
When installing Kafka, note the following prerequisites and considerations:
- Kafka does not currently support user authentication and authorization. 
- The following underlying file systems are supported for use with Kafka: - EXT4: supported and recommended 
- EXT3: supported 
 ![[Caution]](../common/images/admon/caution.png) - Caution - Encrypted file systems such as SafenetFS are not supported for Kafka. Index file corruption can occur. 
Installation
Install the Kafka RPMs or packages by completing the following steps.
| ![[Note]](../common/images/admon/note.png) | Note | 
|---|---|
| Hortonworks recommends avoiding using multiple brokers in a single node for Kafka.
                However, if you need to install a multi-node cluster, use the following instructions
                to install Kafka on another machine, make sure each  | 
- Run the following command on each client cluster node and gateway node: - For RHEL/CentOS/Oracle Linux - yum install kafka
- For SLES - zypper install kafka
 
- Check the JAVA_HOME environment variable. If it has not yet been set, add the following to the PATH variable: - export JAVA_HOME=<path of installed jdk version folder>

